diff options
Diffstat (limited to 'm4')
| -rw-r--r-- | m4/extensions.m4 | 44 | ||||
| -rw-r--r-- | m4/flexmember.m4 | 43 | ||||
| -rw-r--r-- | m4/fpending.m4 | 67 | ||||
| -rw-r--r-- | m4/gnulib-comp.m4 | 15 | ||||
| -rw-r--r-- | m4/limits-h.m4 | 31 | ||||
| -rw-r--r-- | m4/manywarnings.m4 | 20 | ||||
| -rw-r--r-- | m4/mktime.m4 | 27 | ||||
| -rw-r--r-- | m4/nocrash.m4 | 3 | ||||
| -rw-r--r-- | m4/secure_getenv.m4 | 1 | ||||
| -rw-r--r-- | m4/st_dm_mode.m4 | 2 | ||||
| -rw-r--r-- | m4/std-gnu11.m4 | 824 | ||||
| -rw-r--r-- | m4/stdint.m4 | 63 | ||||
| -rw-r--r-- | m4/stdio_h.m4 | 14 | ||||
| -rw-r--r-- | m4/stdlib_h.m4 | 7 | ||||
| -rw-r--r-- | m4/sys_types_h.m4 | 29 | ||||
| -rw-r--r-- | m4/utimes.m4 | 2 |
16 files changed, 1080 insertions, 112 deletions
diff --git a/m4/extensions.m4 b/m4/extensions.m4 index f7243b6b433..c60f537db17 100644 --- a/m4/extensions.m4 +++ b/m4/extensions.m4 @@ -1,4 +1,4 @@ -# serial 13 -*- Autoconf -*- +# serial 15 -*- Autoconf -*- # Enable extensions on systems that normally disable them. # Copyright (C) 2003, 2006-2017 Free Software Foundation, Inc. @@ -60,7 +60,7 @@ dnl configure.ac when using autoheader 2.62. #ifndef _ALL_SOURCE # undef _ALL_SOURCE #endif -/* Enable general extensions on OS X. */ +/* Enable general extensions on macOS. */ #ifndef _DARWIN_C_SOURCE # undef _DARWIN_C_SOURCE #endif @@ -68,14 +68,38 @@ dnl configure.ac when using autoheader 2.62. #ifndef _GNU_SOURCE # undef _GNU_SOURCE #endif -/* Use GNU style printf and scanf. */ -#ifndef __USE_MINGW_ANSI_STDIO -# undef __USE_MINGW_ANSI_STDIO -#endif /* Enable threading extensions on Solaris. */ #ifndef _POSIX_PTHREAD_SEMANTICS # undef _POSIX_PTHREAD_SEMANTICS #endif +/* Enable extensions specified by ISO/IEC TS 18661-5:2014. */ +#ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__ +# undef __STDC_WANT_IEC_60559_ATTRIBS_EXT__ +#endif +/* Enable extensions specified by ISO/IEC TS 18661-1:2014. */ +#ifndef __STDC_WANT_IEC_60559_BFP_EXT__ +# undef __STDC_WANT_IEC_60559_BFP_EXT__ +#endif +/* Enable extensions specified by ISO/IEC TS 18661-2:2015. */ +#ifndef __STDC_WANT_IEC_60559_DFP_EXT__ +# undef __STDC_WANT_IEC_60559_DFP_EXT__ +#endif +/* Enable extensions specified by ISO/IEC TS 18661-4:2015. */ +#ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__ +# undef __STDC_WANT_IEC_60559_FUNCS_EXT__ +#endif +/* Enable extensions specified by ISO/IEC TS 18661-3:2015. */ +#ifndef __STDC_WANT_IEC_60559_TYPES_EXT__ +# undef __STDC_WANT_IEC_60559_TYPES_EXT__ +#endif +/* Enable extensions specified by ISO/IEC TR 24731-2:2010. */ +#ifndef __STDC_WANT_LIB_EXT2__ +# undef __STDC_WANT_LIB_EXT2__ +#endif +/* Enable extensions specified by ISO/IEC 24747:2009. */ +#ifndef __STDC_WANT_MATH_SPEC_FUNCS__ +# undef __STDC_WANT_MATH_SPEC_FUNCS__ +#endif /* Enable extensions on HP NonStop. */ #ifndef _TANDEM_SOURCE # undef _TANDEM_SOURCE @@ -104,8 +128,14 @@ dnl configure.ac when using autoheader 2.62. AC_DEFINE([_ALL_SOURCE]) AC_DEFINE([_DARWIN_C_SOURCE]) AC_DEFINE([_GNU_SOURCE]) - AC_DEFINE([__USE_MINGW_ANSI_STDIO]) AC_DEFINE([_POSIX_PTHREAD_SEMANTICS]) + AC_DEFINE([__STDC_WANT_IEC_60559_ATTRIBS_EXT__]) + AC_DEFINE([__STDC_WANT_IEC_60559_BFP_EXT__]) + AC_DEFINE([__STDC_WANT_IEC_60559_DFP_EXT__]) + AC_DEFINE([__STDC_WANT_IEC_60559_FUNCS_EXT__]) + AC_DEFINE([__STDC_WANT_IEC_60559_TYPES_EXT__]) + AC_DEFINE([__STDC_WANT_LIB_EXT2__]) + AC_DEFINE([__STDC_WANT_MATH_SPEC_FUNCS__]) AC_DEFINE([_TANDEM_SOURCE]) AC_CACHE_CHECK([whether _XOPEN_SOURCE should be defined], [ac_cv_should_define__xopen_source], diff --git a/m4/flexmember.m4 b/m4/flexmember.m4 new file mode 100644 index 00000000000..155ae9b8120 --- /dev/null +++ b/m4/flexmember.m4 @@ -0,0 +1,43 @@ +# serial 4 +# Check for flexible array member support. + +# Copyright (C) 2006, 2009-2016 Free Software Foundation, Inc. +# This file is free software; the Free Software Foundation +# gives unlimited permission to copy and/or distribute it, +# with or without modifications, as long as this notice is preserved. + +# Written by Paul Eggert. + +AC_DEFUN([AC_C_FLEXIBLE_ARRAY_MEMBER], +[ + AC_CACHE_CHECK([for flexible array member], + ac_cv_c_flexmember, + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM( + [[#include <stdlib.h> + #include <stdio.h> + #include <stddef.h> + struct s { int n; double d[]; };]], + [[int m = getchar (); + size_t nbytes = offsetof (struct s, d) + m * sizeof (double); + nbytes += sizeof (struct s) - 1; + nbytes -= nbytes % sizeof (struct s); + struct s *p = malloc (nbytes); + p->d[0] = 0.0; + return p->d != (double *) NULL;]])], + [ac_cv_c_flexmember=yes], + [ac_cv_c_flexmember=no])]) + if test $ac_cv_c_flexmember = yes; then + AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [], + [Define to nothing if C supports flexible array members, and to + 1 if it does not. That way, with a declaration like 'struct s + { int n; double d@<:@FLEXIBLE_ARRAY_MEMBER@:>@; };', the struct hack + can be used with pre-C99 compilers. + When computing the size of such an object, don't use 'sizeof (struct s)' + as it overestimates the size. Use 'offsetof (struct s, d)' instead. + Don't use 'offsetof (struct s, d@<:@0@:>@)', as this doesn't work with + MSVC and with C++ compilers.]) + else + AC_DEFINE([FLEXIBLE_ARRAY_MEMBER], [1]) + fi +]) diff --git a/m4/fpending.m4 b/m4/fpending.m4 index e37e0485f78..3a5e934c251 100644 --- a/m4/fpending.m4 +++ b/m4/fpending.m4 @@ -1,4 +1,4 @@ -# serial 21 +# serial 22 # Copyright (C) 2000-2001, 2004-2017 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation @@ -11,7 +11,7 @@ dnl and Ulrich Drepper. dnl Find out how to determine the number of pending output bytes on a stream. dnl glibc (2.1.93 and newer) and Solaris provide __fpending. On other systems, -dnl we have to grub around in the FILE struct. +dnl we have to grub around in the (possibly opaque) FILE struct. AC_DEFUN([gl_FUNC_FPENDING], [ @@ -34,66 +34,3 @@ AC_DEFUN([gl_FUNC_FPENDING], AC_CHECK_DECLS([__fpending], [], [], [$fp_headers]) fi ]) - -AC_DEFUN([gl_PREREQ_FPENDING], -[ - AC_CACHE_CHECK( - [how to determine the number of pending output bytes on a stream], - ac_cv_sys_pending_output_n_bytes, - [ - for ac_expr in \ - \ - '# glibc2' \ - 'fp->_IO_write_ptr - fp->_IO_write_base' \ - \ - '# traditional Unix' \ - 'fp->_ptr - fp->_base' \ - \ - '# BSD' \ - 'fp->_p - fp->_bf._base' \ - \ - '# SCO, Unixware' \ - '(fp->__ptr ? fp->__ptr - fp->__base : 0)' \ - \ - '# QNX' \ - '(fp->_Mode & 0x2000 /*_MWRITE*/ ? fp->_Next - fp->_Buf : 0)' \ - \ - '# old glibc?' \ - 'fp->__bufp - fp->__buffer' \ - \ - '# old glibc iostream?' \ - 'fp->_pptr - fp->_pbase' \ - \ - '# emx+gcc' \ - 'fp->_ptr - fp->_buffer' \ - \ - '# Minix' \ - 'fp->_ptr - fp->_buf' \ - \ - '# Plan9' \ - 'fp->wp - fp->buf' \ - \ - '# VMS' \ - '(*fp)->_ptr - (*fp)->_base' \ - \ - '# e.g., DGUX R4.11; the info is not available' \ - 1 \ - ; do - - # Skip each embedded comment. - case "$ac_expr" in '#'*) continue;; esac - - AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>]], - [[FILE *fp = stdin; (void) ($ac_expr);]])], - [fp_done=yes] - ) - test "$fp_done" = yes && break - done - - ac_cv_sys_pending_output_n_bytes=$ac_expr - ] - ) - AC_DEFINE_UNQUOTED([PENDING_OUTPUT_N_BYTES], - $ac_cv_sys_pending_output_n_bytes, - [the number of pending output bytes on stream 'fp']) -]) diff --git a/m4/gnulib-comp.m4 b/m4/gnulib-comp.m4 index aa3e740a4a8..1df5bd17380 100644 --- a/m4/gnulib-comp.m4 +++ b/m4/gnulib-comp.m4 @@ -78,6 +78,8 @@ AC_DEFUN([gl_EARLY], # Code from module fdatasync: # Code from module fdopendir: # Code from module filemode: + # Code from module filevercmp: + # Code from module flexmember: # Code from module fpending: # Code from module fstatat: # Code from module fsync: @@ -97,6 +99,7 @@ AC_DEFUN([gl_EARLY], # Code from module inttypes-incomplete: # Code from module largefile: AC_REQUIRE([AC_SYS_LARGEFILE]) + # Code from module limits-h: # Code from module lstat: # Code from module manywarnings: # Code from module memrchr: @@ -126,6 +129,7 @@ AC_DEFUN([gl_EARLY], # Code from module ssize_t: # Code from module stat: # Code from module stat-time: + # Code from module std-gnu11: # Code from module stdalign: # Code from module stddef: # Code from module stdint: @@ -230,10 +234,10 @@ AC_DEFUN([gl_INIT], gl_DIRENT_MODULE_INDICATOR([fdopendir]) gl_MODULE_INDICATOR([fdopendir]) gl_FILEMODE + AC_C_FLEXIBLE_ARRAY_MEMBER gl_FUNC_FPENDING if test $gl_cv_func___fpending = no; then AC_LIBOBJ([fpending]) - gl_PREREQ_FPENDING fi gl_FUNC_FSTATAT if test $HAVE_FSTATAT = 0 || test $REPLACE_FSTATAT = 1; then @@ -280,6 +284,7 @@ AC_DEFUN([gl_INIT], gl_SYS_TIME_MODULE_INDICATOR([gettimeofday]) gl_INTTYPES_INCOMPLETE AC_REQUIRE([gl_LARGEFILE]) + gl_LIMITS_H gl_FUNC_LSTAT if test $REPLACE_LSTAT = 1; then AC_LIBOBJ([lstat]) @@ -888,6 +893,9 @@ AC_DEFUN([gl_FILE_LIST], [ lib/fdopendir.c lib/filemode.c lib/filemode.h + lib/filevercmp.c + lib/filevercmp.h + lib/flexmember.h lib/fpending.c lib/fpending.h lib/fstatat.c @@ -910,6 +918,7 @@ AC_DEFUN([gl_FILE_LIST], [ lib/ignore-value.h lib/intprops.h lib/inttypes.in.h + lib/limits.in.h lib/lstat.c lib/md5.c lib/md5.h @@ -946,6 +955,7 @@ AC_DEFUN([gl_FILE_LIST], [ lib/stdalign.in.h lib/stddef.in.h lib/stdint.in.h + lib/stdio-impl.h lib/stdio.in.h lib/stdlib.in.h lib/stpcpy.c @@ -1009,6 +1019,7 @@ AC_DEFUN([gl_FILE_LIST], [ m4/fdatasync.m4 m4/fdopendir.m4 m4/filemode.m4 + m4/flexmember.m4 m4/fpending.m4 m4/fstatat.m4 m4/fsync.m4 @@ -1024,6 +1035,7 @@ AC_DEFUN([gl_FILE_LIST], [ m4/include_next.m4 m4/inttypes.m4 m4/largefile.m4 + m4/limits-h.m4 m4/longlong.m4 m4/lstat.m4 m4/manywarnings.m4 @@ -1052,6 +1064,7 @@ AC_DEFUN([gl_FILE_LIST], [ m4/st_dm_mode.m4 m4/stat-time.m4 m4/stat.m4 + m4/std-gnu11.m4 m4/stdalign.m4 m4/stddef_h.m4 m4/stdint.m4 diff --git a/m4/limits-h.m4 b/m4/limits-h.m4 new file mode 100644 index 00000000000..31fdf0a779e --- /dev/null +++ b/m4/limits-h.m4 @@ -0,0 +1,31 @@ +dnl Check whether limits.h has needed features. + +dnl Copyright 2016 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +dnl From Paul Eggert. + +AC_DEFUN_ONCE([gl_LIMITS_H], +[ + gl_CHECK_NEXT_HEADERS([limits.h]) + + AC_CACHE_CHECK([whether limits.h has ULLONG_WIDTH etc.], + [gl_cv_header_limits_width], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[#ifndef __STDC_WANT_IEC_60559_BFP_EXT__ + #define __STDC_WANT_IEC_60559_BFP_EXT__ 1 + #endif + #include <limits.h> + int ullw = ULLONG_WIDTH;]])], + [gl_cv_header_limits_width=yes], + [gl_cv_header_limits_width=no])]) + if test "$gl_cv_header_limits_width" = yes; then + LIMITS_H= + else + LIMITS_H=limits.h + fi + AC_SUBST([LIMITS_H]) + AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"]) +]) diff --git a/m4/manywarnings.m4 b/m4/manywarnings.m4 index a2222054d70..4f701f4eaca 100644 --- a/m4/manywarnings.m4 +++ b/m4/manywarnings.m4 @@ -1,5 +1,5 @@ -# manywarnings.m4 serial 7 -dnl Copyright (C) 2008-2017 Free Software Foundation, Inc. +# manywarnings.m4 serial 8 +dnl Copyright (C) 2008-2016 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -62,10 +62,11 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC], CFLAGS="$CFLAGS -W -Werror" AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( - [[void f (void) + [[int f (void) { typedef struct { int a; int b; } s_t; s_t s1 = { 0, }; + return s1.b; } ]], [[]])], @@ -103,6 +104,7 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC], gl_manywarn_set= for gl_manywarn_item in \ + -fno-common \ -W \ -Wabi \ -Waddress \ @@ -129,6 +131,7 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC], -Wdiscarded-qualifiers \ -Wdiv-by-zero \ -Wdouble-promotion \ + -Wduplicated-cond \ -Wempty-body \ -Wendif-labels \ -Wenum-compare \ @@ -140,7 +143,10 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC], -Wformat-signedness \ -Wformat-y2k \ -Wformat-zero-length \ + -Wframe-address \ -Wfree-nonheap-object \ + -Whsa \ + -Wignored-attributes \ -Wignored-qualifiers \ -Wimplicit \ -Wimplicit-function-declaration \ @@ -158,6 +164,7 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC], -Wmain \ -Wmaybe-uninitialized \ -Wmemset-transposed-args \ + -Wmisleading-indentation \ -Wmissing-braces \ -Wmissing-declarations \ -Wmissing-field-initializers \ @@ -168,6 +175,8 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC], -Wnarrowing \ -Wnested-externs \ -Wnonnull \ + -Wnonnull-compare \ + -Wnull-dereference \ -Wodr \ -Wold-style-declaration \ -Wold-style-definition \ @@ -184,10 +193,12 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC], -Wpragmas \ -Wreturn-local-addr \ -Wreturn-type \ + -Wscalar-storage-order \ -Wsequence-point \ -Wshadow \ -Wshift-count-negative \ -Wshift-count-overflow \ + -Wshift-negative-value \ -Wsizeof-array-argument \ -Wsizeof-pointer-memaccess \ -Wstack-protector \ @@ -205,6 +216,7 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC], -Wswitch-default \ -Wsync-nand \ -Wsystem-headers \ + -Wtautological-compare \ -Wtrampolines \ -Wtrigraphs \ -Wtype-limits \ @@ -237,6 +249,8 @@ AC_DEFUN([gl_MANYWARN_ALL_GCC], # them here so that the above 'comm' command doesn't report a false match. gl_manywarn_set="$gl_manywarn_set -Warray-bounds=2" gl_manywarn_set="$gl_manywarn_set -Wnormalized=nfc" + gl_manywarn_set="$gl_manywarn_set -Wshift-overflow=2" + gl_manywarn_set="$gl_manywarn_set -Wunused-const-variable=2" # These are needed for older GCC versions. if test -n "$GCC"; then diff --git a/m4/mktime.m4 b/m4/mktime.m4 index 3ea19f6400e..23cad732ff4 100644 --- a/m4/mktime.m4 +++ b/m4/mktime.m4 @@ -1,20 +1,36 @@ -# serial 25 -dnl Copyright (C) 2002-2003, 2005-2007, 2009-2017 Free Software -dnl Foundation, Inc. +# serial 27 +dnl Copyright (C) 2002-2003, 2005-2007, 2009-2016 Free Software Foundation, +dnl Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. dnl From Jim Meyering. +AC_DEFUN([gl_TIME_T_IS_SIGNED], +[ + AC_CACHE_CHECK([whether time_t is signed], + [gl_cv_time_t_is_signed], + [AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[#include <time.h> + char time_t_signed[(time_t) -1 < 0 ? 1 : -1];]])], + [gl_cv_time_t_is_signed=yes], + [gl_cv_time_t_is_signed=no])]) + if test $gl_cv_time_t_is_signed = yes; then + AC_DEFINE([TIME_T_IS_SIGNED], [1], [Define to 1 if time_t is signed.]) + fi +]) + AC_DEFUN([gl_FUNC_MKTIME], [ AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS]) + AC_REQUIRE([gl_TIME_T_IS_SIGNED]) dnl We don't use AC_FUNC_MKTIME any more, because it is no longer maintained dnl in Autoconf and because it invokes AC_LIBOBJ. AC_CHECK_HEADERS_ONCE([unistd.h]) AC_CHECK_DECLS_ONCE([alarm]) + AC_CHECK_FUNCS_ONCE([tzset]) AC_REQUIRE([gl_MULTIARCH]) if test $APPLE_UNIVERSAL_BUILD = 1; then # A universal build on Apple Mac OS X platforms. @@ -169,7 +185,6 @@ main () time_t t, delta; int i, j; int time_t_signed_magnitude = (time_t) ~ (time_t) 0 < (time_t) -1; - int time_t_signed = ! ((time_t) 0 < (time_t) -1); #if HAVE_DECL_ALARM /* This test makes some buggy mktime implementations loop. @@ -179,11 +194,11 @@ main () alarm (60); #endif - time_t_max = (! time_t_signed + time_t_max = (! TIME_T_IS_SIGNED ? (time_t) -1 : ((((time_t) 1 << (sizeof (time_t) * CHAR_BIT - 2)) - 1) * 2 + 1)); - time_t_min = (! time_t_signed + time_t_min = (! TIME_T_IS_SIGNED ? (time_t) 0 : time_t_signed_magnitude ? ~ (time_t) 0 diff --git a/m4/nocrash.m4 b/m4/nocrash.m4 index c82567ddfa0..2c2c5fb4570 100644 --- a/m4/nocrash.m4 +++ b/m4/nocrash.m4 @@ -110,11 +110,12 @@ nocrash_init (void) #else /* Avoid a crash on POSIX systems. */ #include <signal.h> +#include <unistd.h> /* A POSIX signal handler. */ static void exception_handler (int sig) { - exit (1); + _exit (1); } static void nocrash_init (void) diff --git a/m4/secure_getenv.m4 b/m4/secure_getenv.m4 index 67fbf6a7e36..6bd4afd9c1a 100644 --- a/m4/secure_getenv.m4 +++ b/m4/secure_getenv.m4 @@ -22,4 +22,5 @@ AC_DEFUN([gl_PREREQ_SECURE_GETENV], [ if test $ac_cv_func___secure_getenv = no; then AC_CHECK_FUNCS([issetugid]) fi + AC_CHECK_FUNCS_ONCE([getuid geteuid getgid getegid]) ]) diff --git a/m4/st_dm_mode.m4 b/m4/st_dm_mode.m4 index 4366ade7fe4..af6757e8a38 100644 --- a/m4/st_dm_mode.m4 +++ b/m4/st_dm_mode.m4 @@ -18,7 +18,7 @@ AC_DEFUN([AC_STRUCT_ST_DM_MODE], if test $ac_cv_struct_st_dm_mode = yes; then AC_DEFINE([HAVE_ST_DM_MODE], [1], - [Define if struct stat has an st_dm_mode member. ]) + [Define if struct stat has an st_dm_mode member.]) fi ] ) diff --git a/m4/std-gnu11.m4 b/m4/std-gnu11.m4 new file mode 100644 index 00000000000..10da26f1302 --- /dev/null +++ b/m4/std-gnu11.m4 @@ -0,0 +1,824 @@ +# Prefer GNU C11 and C++11 to earlier versions. -*- coding: utf-8 -*- + +# This implementation is taken from GNU Autoconf lib/autoconf/c.m4 +# commit 017d5ddd82854911f0119691d91ea8a1438824d6 +# dated Sun Apr 3 13:57:17 2016 -0700 +# This implementation will be obsolete once we can assume Autoconf 2.70 +# or later is installed everywhere a Gnulib program might be developed. + + +# Copyright (C) 2001-2016 Free Software Foundation, Inc. + +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. + +# Written by David MacKenzie, with help from +# Akim Demaille, Paul Eggert, +# François Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor, +# Roland McGrath, Noah Friedman, david d zuhn, and many others. + + +# AC_PROG_CC([COMPILER ...]) +# -------------------------- +# COMPILER ... is a space separated list of C compilers to search for. +# This just gives the user an opportunity to specify an alternative +# search list for the C compiler. +AC_DEFUN_ONCE([AC_PROG_CC], +[AC_LANG_PUSH(C)dnl +AC_ARG_VAR([CC], [C compiler command])dnl +AC_ARG_VAR([CFLAGS], [C compiler flags])dnl +_AC_ARG_VAR_LDFLAGS()dnl +_AC_ARG_VAR_LIBS()dnl +_AC_ARG_VAR_CPPFLAGS()dnl +m4_ifval([$1], + [AC_CHECK_TOOLS(CC, [$1])], +[AC_CHECK_TOOL(CC, gcc) +if test -z "$CC"; then + dnl Here we want: + dnl AC_CHECK_TOOL(CC, cc) + dnl but without the check for a tool without the prefix. + dnl Until the check is removed from there, copy the code: + if test -n "$ac_tool_prefix"; then + AC_CHECK_PROG(CC, [${ac_tool_prefix}cc], [${ac_tool_prefix}cc]) + fi +fi +if test -z "$CC"; then + AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc) +fi +if test -z "$CC"; then + AC_CHECK_TOOLS(CC, cl.exe) +fi +if test -z "$CC"; then + AC_CHECK_TOOL(CC, clang) +fi +]) + +test -z "$CC" && AC_MSG_FAILURE([no acceptable C compiler found in \$PATH]) + +# Provide some information about the compiler. +_AS_ECHO_LOG([checking for _AC_LANG compiler version]) +set X $ac_compile +ac_compiler=$[2] +for ac_option in --version -v -V -qversion -version; do + _AC_DO_LIMIT([$ac_compiler $ac_option >&AS_MESSAGE_LOG_FD]) +done + +m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl +m4_expand_once([_AC_COMPILER_OBJEXT])[]dnl +_AC_LANG_COMPILER_GNU +if test $ac_compiler_gnu = yes; then + GCC=yes +else + GCC= +fi +_AC_PROG_CC_G +dnl +dnl Set ac_prog_cc_stdc to the supported C version. +dnl Also set the documented variable ac_cv_prog_cc_stdc; +dnl its name was chosen when it was cached, but it is no longer cached. +_AC_PROG_CC_C11([ac_prog_cc_stdc=c11 + ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c11], + [_AC_PROG_CC_C99([ac_prog_cc_stdc=c99 + ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c99], + [_AC_PROG_CC_C89([ac_prog_cc_stdc=c89 + ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c89], + [ac_prog_cc_stdc=no + ac_cv_prog_cc_stdc=no])])]) +dnl +AC_LANG_POP(C)dnl +])# AC_PROG_CC + + + +# AC_PROG_CXX([LIST-OF-COMPILERS]) +# -------------------------------- +# LIST-OF-COMPILERS is a space separated list of C++ compilers to search +# for (if not specified, a default list is used). This just gives the +# user an opportunity to specify an alternative search list for the C++ +# compiler. +# aCC HP-UX C++ compiler much better than `CC', so test before. +# FCC Fujitsu C++ compiler +# KCC KAI C++ compiler +# RCC Rational C++ +# xlC_r AIX C Set++ (with support for reentrant code) +# xlC AIX C Set++ +AC_DEFUN([AC_PROG_CXX], +[AC_LANG_PUSH(C++)dnl +AC_ARG_VAR([CXX], [C++ compiler command])dnl +AC_ARG_VAR([CXXFLAGS], [C++ compiler flags])dnl +_AC_ARG_VAR_LDFLAGS()dnl +_AC_ARG_VAR_LIBS()dnl +_AC_ARG_VAR_CPPFLAGS()dnl +_AC_ARG_VAR_PRECIOUS([CCC])dnl +if test -z "$CXX"; then + if test -n "$CCC"; then + CXX=$CCC + else + AC_CHECK_TOOLS(CXX, + [m4_default([$1], + [g++ c++ gpp aCC CC cxx cc++ cl.exe FCC KCC RCC xlC_r xlC clang++])], + g++) + fi +fi +# Provide some information about the compiler. +_AS_ECHO_LOG([checking for _AC_LANG compiler version]) +set X $ac_compile +ac_compiler=$[2] +for ac_option in --version -v -V -qversion; do + _AC_DO_LIMIT([$ac_compiler $ac_option >&AS_MESSAGE_LOG_FD]) +done + +m4_expand_once([_AC_COMPILER_EXEEXT])[]dnl +m4_expand_once([_AC_COMPILER_OBJEXT])[]dnl +_AC_LANG_COMPILER_GNU +if test $ac_compiler_gnu = yes; then + GXX=yes +else + GXX= +fi +_AC_PROG_CXX_G +_AC_PROG_CXX_CXX11([ac_prog_cxx_stdcxx=cxx11 + ac_cv_prog_cxx_stdcxx=$ac_cv_prog_cxx_cxx11 + ac_cv_prog_cxx_cxx98=$ac_cv_prog_cxx_cxx11], + [_AC_PROG_CXX_CXX98([ac_prog_cxx_stdcxx=cxx98 + ac_cv_prog_cxx_stdcxx=$ac_cv_prog_cxx_cxx98], + [ac_prog_cxx_stdcxx=no + ac_cv_prog_cxx_stdcxx=no])]) +AC_LANG_POP(C++)dnl +])# AC_PROG_CXX + + +# _AC_C_STD_TRY(STANDARD, TEST-PROLOGUE, TEST-BODY, OPTION-LIST, +# ACTION-IF-AVAILABLE, ACTION-IF-UNAVAILABLE) +# -------------------------------------------------------------- +# Check whether the C compiler accepts features of STANDARD (e.g `c89', `c99') +# by trying to compile a program of TEST-PROLOGUE and TEST-BODY. If this fails, +# try again with each compiler option in the space-separated OPTION-LIST; if one +# helps, append it to CC. If eventually successful, run ACTION-IF-AVAILABLE, +# else ACTION-IF-UNAVAILABLE. +AC_DEFUN([_AC_C_STD_TRY], +[AC_MSG_CHECKING([for $CC option to enable ]m4_translit($1, [c], [C])[ features]) +AC_CACHE_VAL(ac_cv_prog_cc_$1, +[ac_cv_prog_cc_$1=no +ac_save_CC=$CC +AC_LANG_CONFTEST([AC_LANG_PROGRAM([$2], [$3])]) +for ac_arg in '' $4 +do + CC="$ac_save_CC $ac_arg" + _AC_COMPILE_IFELSE([], [ac_cv_prog_cc_$1=$ac_arg]) + test "x$ac_cv_prog_cc_$1" != "xno" && break +done +rm -f conftest.$ac_ext +CC=$ac_save_CC +])# AC_CACHE_VAL +ac_prog_cc_stdc_options= +case "x$ac_cv_prog_cc_$1" in + x) + AC_MSG_RESULT([none needed]) ;; + xno) + AC_MSG_RESULT([unsupported]) ;; + *) + ac_prog_cc_stdc_options=" $ac_cv_prog_cc_$1" + CC=$CC$ac_prog_cc_stdc_options + AC_MSG_RESULT([$ac_cv_prog_cc_$1]) ;; +esac +AS_IF([test "x$ac_cv_prog_cc_$1" != xno], [$5], [$6]) +])# _AC_C_STD_TRY + +# _AC_C_C99_TEST_HEADER +# --------------------- +# A C header suitable for testing for C99. +AC_DEFUN([_AC_C_C99_TEST_HEADER], +[[#include <stdarg.h> +#include <stdbool.h> +#include <stddef.h> +#include <stdlib.h> +#include <wchar.h> +#include <stdio.h> + +// Check varargs macros. These examples are taken from C99 6.10.3.5. +#define debug(...) fprintf (stderr, __VA_ARGS__) +#define showlist(...) puts (#__VA_ARGS__) +#define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__)) +static void +test_varargs_macros (void) +{ + int x = 1234; + int y = 5678; + debug ("Flag"); + debug ("X = %d\n", x); + showlist (The first, second, and third items.); + report (x>y, "x is %d but y is %d", x, y); +} + +// Check long long types. +#define BIG64 18446744073709551615ull +#define BIG32 4294967295ul +#define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0) +#if !BIG_OK + your preprocessor is broken; +#endif +#if BIG_OK +#else + your preprocessor is broken; +#endif +static long long int bignum = -9223372036854775807LL; +static unsigned long long int ubignum = BIG64; + +struct incomplete_array +{ + int datasize; + double data[]; +}; + +struct named_init { + int number; + const wchar_t *name; + double average; +}; + +typedef const char *ccp; + +static inline int +test_restrict (ccp restrict text) +{ + // See if C++-style comments work. + // Iterate through items via the restricted pointer. + // Also check for declarations in for loops. + for (unsigned int i = 0; *(text+i) != '\0'; ++i) + continue; + return 0; +} + +// Check varargs and va_copy. +static bool +test_varargs (const char *format, ...) +{ + va_list args; + va_start (args, format); + va_list args_copy; + va_copy (args_copy, args); + + const char *str = ""; + int number = 0; + float fnumber = 0; + + while (*format) + { + switch (*format++) + { + case 's': // string + str = va_arg (args_copy, const char *); + break; + case 'd': // int + number = va_arg (args_copy, int); + break; + case 'f': // float + fnumber = va_arg (args_copy, double); + break; + default: + break; + } + } + va_end (args_copy); + va_end (args); + + return *str && number && fnumber; +}]])# _AC_C_C99_TEST_HEADER + +# _AC_C_C99_TEST_BODY +# ------------------- +# A C body suitable for testing for C99, assuming the corresponding header. +AC_DEFUN([_AC_C_C99_TEST_BODY], +[[ + // Check bool. + _Bool success = false; + + // Check restrict. + if (test_restrict ("String literal") == 0) + success = true; + char *restrict newvar = "Another string"; + + // Check varargs. + success &= test_varargs ("s, d' f .", "string", 65, 34.234); + test_varargs_macros (); + + // Check flexible array members. + struct incomplete_array *ia = + malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10)); + ia->datasize = 10; + for (int i = 0; i < ia->datasize; ++i) + ia->data[i] = i * 1.234; + + // Check named initializers. + struct named_init ni = { + .number = 34, + .name = L"Test wide string", + .average = 543.34343, + }; + + ni.number = 58; + + int dynamic_array[ni.number]; + dynamic_array[ni.number - 1] = 543; + + // work around unused variable warnings + return (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == 'x' + || dynamic_array[ni.number - 1] != 543); +]]) + +# _AC_PROG_CC_C99 ([ACTION-IF-AVAILABLE], [ACTION-IF-UNAVAILABLE]) +# ---------------------------------------------------------------- +# If the C compiler is not in ISO C99 mode by default, try to add an +# option to output variable CC to make it so. This macro tries +# various options that select ISO C99 on some system or another. It +# considers the compiler to be in ISO C99 mode if it handles _Bool, +# // comments, flexible array members, inline, long long int, mixed +# code and declarations, named initialization of structs, restrict, +# va_copy, varargs macros, variable declarations in for loops and +# variable length arrays. +AC_DEFUN([_AC_PROG_CC_C99], +[_AC_C_STD_TRY([c99], +[_AC_C_C99_TEST_HEADER], +[_AC_C_C99_TEST_BODY], +dnl Try +dnl GCC -std=gnu99 (unused restrictive modes: -std=c99 -std=iso9899:1999) +dnl IBM XL C -qlanglvl=extc1x (V12.1; does not pass C11 test) +dnl IBM XL C -qlanglvl=extc99 +dnl (pre-V12.1; unused restrictive mode: -qlanglvl=stdc99) +dnl HP cc -AC99 +dnl Intel ICC -std=c99, -c99 (deprecated) +dnl IRIX -c99 +dnl Solaris -D_STDC_C99= +dnl cc's -xc99 option uses linker magic to define the external +dnl symbol __xpg4 as if by "int __xpg4 = 1;", which enables C99 +dnl behavior for C library functions. This is not wanted here, +dnl because it means that a single module compiled with -xc99 +dnl alters C runtime behavior for the entire program, not for +dnl just the module. Instead, define the (private) symbol +dnl _STDC_C99, which suppresses a bogus failure in <stdbool.h>. +dnl The resulting compiler passes the test case here, and that's +dnl good enough. For more, please see the thread starting at: +dnl http://lists.gnu.org/archive/html/autoconf/2010-12/msg00059.html +dnl Tru64 -c99 +dnl with extended modes being tried first. +[[-std=gnu99 -std=c99 -c99 -AC99 -D_STDC_C99= -qlanglvl=extc1x -qlanglvl=extc99]], [$1], [$2])[]dnl +])# _AC_PROG_CC_C99 + + +# _AC_PROG_CC_C11 ([ACTION-IF-AVAILABLE], [ACTION-IF-UNAVAILABLE]) +# ---------------------------------------------------------------- +# If the C compiler is not in ISO C11 mode by default, try to add an +# option to output variable CC to make it so. This macro tries +# various options that select ISO C11 on some system or another. It +# considers the compiler to be in ISO C11 mode if it handles _Alignas, +# _Alignof, _Noreturn, _Static_assert, UTF-8 string literals, +# duplicate typedefs, and anonymous structures and unions. +AC_DEFUN([_AC_PROG_CC_C11], +[_AC_C_STD_TRY([c11], +[_AC_C_C99_TEST_HEADER[ +// Check _Alignas. +char _Alignas (double) aligned_as_double; +char _Alignas (0) no_special_alignment; +extern char aligned_as_int; +char _Alignas (0) _Alignas (int) aligned_as_int; + +// Check _Alignof. +enum +{ + int_alignment = _Alignof (int), + int_array_alignment = _Alignof (int[100]), + char_alignment = _Alignof (char) +}; +_Static_assert (0 < -_Alignof (int), "_Alignof is signed"); + +// Check _Noreturn. +int _Noreturn does_not_return (void) { for (;;) continue; } + +// Check _Static_assert. +struct test_static_assert +{ + int x; + _Static_assert (sizeof (int) <= sizeof (long int), + "_Static_assert does not work in struct"); + long int y; +}; + +// Check UTF-8 literals. +#define u8 syntax error! +char const utf8_literal[] = u8"happens to be ASCII" "another string"; + +// Check duplicate typedefs. +typedef long *long_ptr; +typedef long int *long_ptr; +typedef long_ptr long_ptr; + +// Anonymous structures and unions -- taken from C11 6.7.2.1 Example 1. +struct anonymous +{ + union { + struct { int i; int j; }; + struct { int k; long int l; } w; + }; + int m; +} v1; +]], +[_AC_C_C99_TEST_BODY[ + v1.i = 2; + v1.w.k = 5; + _Static_assert ((offsetof (struct anonymous, i) + == offsetof (struct anonymous, w.k)), + "Anonymous union alignment botch"); +]], +dnl Try +dnl GCC -std=gnu11 (unused restrictive mode: -std=c11) +dnl with extended modes being tried first. +dnl +dnl Do not try -qlanglvl=extc1x, because IBM XL C V12.1 (the latest version as +dnl of September 2012) does not pass the C11 test. For now, try extc1x when +dnl compiling the C99 test instead, since it enables _Static_assert and +dnl _Noreturn, which is a win. If -qlanglvl=extc11 or -qlanglvl=extc1x passes +dnl the C11 test in some future version of IBM XL C, we'll add it here, +dnl preferably extc11. +[[-std=gnu11]], [$1], [$2])[]dnl +])# _AC_PROG_CC_C11 + + +# AC_PROG_CC_C89 +# -------------- +# Do not use AU_ALIAS here and in AC_PROG_CC_C99 and AC_PROG_CC_STDC, +# as that'd be incompatible with how Automake redefines AC_PROG_CC. See +# <http://lists.gnu.org/archive/html/autoconf/2012-10/msg00048.html>. +AU_DEFUN([AC_PROG_CC_C89], + [AC_REQUIRE([AC_PROG_CC])], + [$0 is obsolete; use AC_PROG_CC] +) + +# AC_PROG_CC_C99 +# -------------- +AU_DEFUN([AC_PROG_CC_C99], + [AC_REQUIRE([AC_PROG_CC])], + [$0 is obsolete; use AC_PROG_CC] +) + +# AC_PROG_CC_STDC +# --------------- +AU_DEFUN([AC_PROG_CC_STDC], + [AC_REQUIRE([AC_PROG_CC])], + [$0 is obsolete; use AC_PROG_CC] +) + + +# AC_C_PROTOTYPES +# --------------- +# Check if the C compiler supports prototypes, included if it needs +# options. +AC_DEFUN([AC_C_PROTOTYPES], +[AC_REQUIRE([AC_PROG_CC])dnl +if test "$ac_prog_cc_stdc" != no; then + AC_DEFINE(PROTOTYPES, 1, + [Define to 1 if the C compiler supports function prototypes.]) + AC_DEFINE(__PROTOTYPES, 1, + [Define like PROTOTYPES; this can be used by system headers.]) +fi +])# AC_C_PROTOTYPES + + +# _AC_CXX_STD_TRY(STANDARD, TEST-PROLOGUE, TEST-BODY, OPTION-LIST, +# ACTION-IF-AVAILABLE, ACTION-IF-UNAVAILABLE) +# ---------------------------------------------------------------- +# Check whether the C++ compiler accepts features of STANDARD (e.g +# `cxx98', `cxx11') by trying to compile a program of TEST-PROLOGUE +# and TEST-BODY. If this fails, try again with each compiler option +# in the space-separated OPTION-LIST; if one helps, append it to CXX. +# If eventually successful, run ACTION-IF-AVAILABLE, else +# ACTION-IF-UNAVAILABLE. +AC_DEFUN([_AC_CXX_STD_TRY], +[AC_MSG_CHECKING([for $CXX option to enable ]m4_translit(m4_translit($1, [x], [+]), [a-z], [A-Z])[ features]) +AC_LANG_PUSH(C++)dnl +AC_CACHE_VAL(ac_cv_prog_cxx_$1, +[ac_cv_prog_cxx_$1=no +ac_save_CXX=$CXX +AC_LANG_CONFTEST([AC_LANG_PROGRAM([$2], [$3])]) +for ac_arg in '' $4 +do + CXX="$ac_save_CXX $ac_arg" + _AC_COMPILE_IFELSE([], [ac_cv_prog_cxx_$1=$ac_arg]) + test "x$ac_cv_prog_cxx_$1" != "xno" && break +done +rm -f conftest.$ac_ext +CXX=$ac_save_CXX +])# AC_CACHE_VAL +ac_prog_cxx_stdcxx_options= +case "x$ac_cv_prog_cxx_$1" in + x) + AC_MSG_RESULT([none needed]) ;; + xno) + AC_MSG_RESULT([unsupported]) ;; + *) + ac_prog_cxx_stdcxx_options=" $ac_cv_prog_cxx_$1" + CXX=$CXX$ac_prog_cxx_stdcxx_options + AC_MSG_RESULT([$ac_cv_prog_cxx_$1]) ;; +esac +AC_LANG_POP(C++)dnl +AS_IF([test "x$ac_cv_prog_cxx_$1" != xno], [$5], [$6]) +])# _AC_CXX_STD_TRY + +# _AC_CXX_CXX98_TEST_HEADER +# ------------------------- +# A C++ header suitable for testing for CXX98. +AC_DEFUN([_AC_CXX_CXX98_TEST_HEADER], +[[ +#include <algorithm> +#include <cstdlib> +#include <fstream> +#include <iomanip> +#include <iostream> +#include <list> +#include <map> +#include <set> +#include <sstream> +#include <stdexcept> +#include <string> +#include <utility> +#include <vector> + +namespace test { + typedef std::vector<std::string> string_vec; + typedef std::pair<int,bool> map_value; + typedef std::map<std::string,map_value> map_type; + typedef std::set<int> set_type; + + template<typename T> + class printer { + public: + printer(std::ostringstream& os): os(os) {} + void operator() (T elem) { os << elem << std::endl; } + private: + std::ostringstream& os; + }; +} +]])# _AC_CXX_CXX98_TEST_HEADER + +# _AC_CXX_CXX98_TEST_BODY +# ----------------------- +# A C++ body suitable for testing for CXX98, assuming the corresponding header. +AC_DEFUN([_AC_CXX_CXX98_TEST_BODY], +[[ + +try { + // Basic string. + std::string teststr("ASCII text"); + teststr += " string"; + + // Simple vector. + test::string_vec testvec; + testvec.push_back(teststr); + testvec.push_back("foo"); + testvec.push_back("bar"); + if (testvec.size() != 3) { + throw std::runtime_error("vector size is not 1"); + } + + // Dump vector into stringstream and obtain string. + std::ostringstream os; + for (test::string_vec::const_iterator i = testvec.begin(); + i != testvec.end(); ++i) { + if (i + 1 != testvec.end()) { + os << teststr << '\n'; + } + } + // Check algorithms work. + std::for_each(testvec.begin(), testvec.end(), test::printer<std::string>(os)); + std::string os_out = os.str(); + + // Test pair and map. + test::map_type testmap; + testmap.insert(std::make_pair(std::string("key"), + std::make_pair(53,false))); + + // Test set. + int values[] = {9, 7, 13, 15, 4, 18, 12, 10, 5, 3, 14, 19, 17, 8, 6, 20, 16, 2, 11, 1}; + test::set_type testset(values, values + sizeof(values)/sizeof(values[0])); + std::list<int> testlist(testset.begin(), testset.end()); + std::copy(testset.begin(), testset.end(), std::back_inserter(testlist)); +} catch (const std::exception& e) { + std::cerr << "Caught exception: " << e.what() << std::endl; + + // Test fstream + std::ofstream of("test.txt"); + of << "Test ASCII text\n" << std::flush; + of << "N= " << std::hex << std::setw(8) << std::left << 534 << std::endl; + of.close(); +} +std::exit(0); +]]) + +# _AC_CXX_CXX11_TEST_HEADER +# ------------------------- +# A C++ header suitable for testing for CXX11. +AC_DEFUN([_AC_CXX_CXX11_TEST_HEADER], +[[ +#include <deque> +#include <functional> +#include <memory> +#include <tuple> +#include <array> +#include <regex> +#include <iostream> + +namespace cxx11test +{ + typedef std::shared_ptr<std::string> sptr; + typedef std::weak_ptr<std::string> wptr; + + typedef std::tuple<std::string,int,double> tp; + typedef std::array<int, 20> int_array; + + constexpr int get_val() { return 20; } + + struct testinit + { + int i; + double d; + }; + + class delegate { + public: + delegate(int n) : n(n) {} + delegate(): delegate(2354) {} + + virtual int getval() { return this->n; }; + protected: + int n; + }; + + class overridden : public delegate { + public: + overridden(int n): delegate(n) {} + virtual int getval() override final { return this->n * 2; } + }; + + class nocopy { + public: + nocopy(int i): i(i) {} + nocopy() = default; + nocopy(const nocopy&) = delete; + nocopy & operator=(const nocopy&) = delete; + private: + int i; + }; +} +]])# _AC_CXX_CXX11_TEST_HEADER + +# _AC_CXX_CXX11_TEST_BODY +# ----------------------- +# A C++ body suitable for testing for CXX11, assuming the corresponding header. +AC_DEFUN([_AC_CXX_CXX11_TEST_BODY], +[[ +{ + // Test auto and decltype + std::deque<int> d; + d.push_front(43); + d.push_front(484); + d.push_front(3); + d.push_front(844); + int total = 0; + for (auto i = d.begin(); i != d.end(); ++i) { total += *i; } + + auto a1 = 6538; + auto a2 = 48573953.4; + auto a3 = "String literal"; + + decltype(a2) a4 = 34895.034; +} +{ + // Test constexpr + short sa[cxx11test::get_val()] = { 0 }; +} +{ + // Test initializer lists + cxx11test::testinit il = { 4323, 435234.23544 }; +} +{ + // Test range-based for and lambda + cxx11test::int_array array = {9, 7, 13, 15, 4, 18, 12, 10, 5, 3, 14, 19, 17, 8, 6, 20, 16, 2, 11, 1}; + for (int &x : array) { x += 23; } + std::for_each(array.begin(), array.end(), [](int v1){ std::cout << v1; }); +} +{ + using cxx11test::sptr; + using cxx11test::wptr; + + sptr sp(new std::string("ASCII string")); + wptr wp(sp); + sptr sp2(wp); +} +{ + cxx11test::tp tuple("test", 54, 45.53434); + double d = std::get<2>(tuple); + std::string s; + int i; + std::tie(s,i,d) = tuple; +} +{ + static std::regex filename_regex("^_?([a-z0-9_.]+-)+[a-z0-9]+$"); + std::string testmatch("Test if this string matches"); + bool match = std::regex_search(testmatch, filename_regex); +} +{ + cxx11test::int_array array = {9, 7, 13, 15, 4, 18, 12, 10, 5, 3, 14, 19, 17, 8, 6, 20, 16, 2, 11, 1}; + cxx11test::int_array::size_type size = array.size(); +} +{ + // Test constructor delegation + cxx11test::delegate d1; + cxx11test::delegate d2(); + cxx11test::delegate d3(45); +} +{ + // Test override and final + cxx11test::overridden o1(55464); +} +{ + // Test nullptr + char *c = nullptr; +} +{ + // Test template brackets + std::vector<std::pair<int,char*>> v1; +} +{ + // Unicode literals + char const *utf8 = u8"UTF-8 string \u2500"; + char16_t const *utf16 = u"UTF-8 string \u2500"; + char32_t const *utf32 = U"UTF-32 string \u2500"; +} +]]) + +# _AC_PROG_CXX_CXX98 ([ACTION-IF-AVAILABLE], [ACTION-IF-UNAVAILABLE]) +# ------------------------------------------------------------------- + +# If the C++ compiler is not in ISO C++98 mode by default, try to add +# an option to output variable CXX to make it so. This macro tries +# various options that select ISO C++98 on some system or another. It +# considers the compiler to be in ISO C++98 mode if it handles basic +# features of the std namespace including: string, containers (list, +# map, set, vector), streams (fstreams, iostreams, stringstreams, +# iomanip), pair, exceptions and algorithms. + + +AC_DEFUN([_AC_PROG_CXX_CXX98], +[_AC_CXX_STD_TRY([cxx98], +[_AC_CXX_CXX98_TEST_HEADER], +[_AC_CXX_CXX98_TEST_BODY], +dnl Try +dnl GCC -std=gnu++98 (unused restrictive mode: -std=c++98) +dnl IBM XL C -qlanglvl=extended +dnl HP aC++ -AA +dnl Intel ICC -std=gnu++98 +dnl Solaris N/A (default) +dnl Tru64 N/A (default, but -std gnu could be used) +dnl with extended modes being tried first. +[[-std=gnu++98 -std=c++98 -qlanglvl=extended -AA]], [$1], [$2])[]dnl +])# _AC_PROG_CXX_CXX98 + +# _AC_PROG_CXX_CXX11 ([ACTION-IF-AVAILABLE], [ACTION-IF-UNAVAILABLE]) +# ------------------------------------------------------------------- +# If the C++ compiler is not in ISO CXX11 mode by default, try to add +# an option to output variable CXX to make it so. This macro tries +# various options that select ISO C++11 on some system or another. It +# considers the compiler to be in ISO C++11 mode if it handles all the +# tests from the C++98 checks, plus the following: Language features +# (auto, constexpr, decltype, default/deleted constructors, delegate +# constructors, final, initializer lists, lambda functions, nullptr, +# override, range-based for loops, template brackets without spaces, +# unicode literals) and library features (array, memory (shared_ptr, +# weak_ptr), regex and tuple types). +AC_DEFUN([_AC_PROG_CXX_CXX11], +[_AC_CXX_STD_TRY([cxx11], +[_AC_CXX_CXX11_TEST_HEADER +_AC_CXX_CXX98_TEST_HEADER], +[_AC_CXX_CXX11_TEST_BODY +_AC_CXX_CXX98_TEST_BODY], +dnl Try +dnl GCC -std=gnu++11 (unused restrictive mode: -std=c++11) [and 0x variants] +dnl IBM XL C -qlanglvl=extended0x +dnl (pre-V12.1; unused restrictive mode: -qlanglvl=stdcxx11) +dnl HP aC++ -AA +dnl Intel ICC -std=c++11 -std=c++0x +dnl Solaris N/A (no support) +dnl Tru64 N/A (no support) +dnl with extended modes being tried first. +[[-std=gnu++11 -std=c++11 -std=gnu++0x -std=c++0x -qlanglvl=extended0x -AA]], [$1], [$2])[]dnl +])# _AC_PROG_CXX_CXX11 diff --git a/m4/stdint.m4 b/m4/stdint.m4 index aad6394ee45..05b6ab7846b 100644 --- a/m4/stdint.m4 +++ b/m4/stdint.m4 @@ -1,5 +1,5 @@ -# stdint.m4 serial 44 -dnl Copyright (C) 2001-2017 Free Software Foundation, Inc. +# stdint.m4 serial 48 +dnl Copyright (C) 2001-2016 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -11,6 +11,8 @@ AC_DEFUN_ONCE([gl_STDINT_H], [ AC_PREREQ([2.59])dnl + AC_REQUIRE([gl_LIMITS_H]) + dnl Check for long long int and unsigned long long int. AC_REQUIRE([AC_TYPE_LONG_LONG_INT]) if test $ac_cv_type_long_long_int = yes; then @@ -152,6 +154,15 @@ uintptr_t h = UINTPTR_MAX; intmax_t i = INTMAX_MAX; uintmax_t j = UINTMAX_MAX; +/* Check that SIZE_MAX has the correct type, if possible. */ +#if 201112 <= __STDC_VERSION__ +int k = _Generic (SIZE_MAX, size_t: 0); +#elif (2 <= __GNUC__ || defined __IBM__TYPEOF__ \ + || (0x5110 <= __SUNPRO_C && !__STDC__)) +extern size_t k; +extern __typeof__ (SIZE_MAX) k; +#endif + #include <limits.h> /* for CHAR_BIT */ #define TYPE_MINIMUM(t) \ ((t) ((t) 0 < (t) -1 ? (t) 0 : ~ TYPE_MAXIMUM (t))) @@ -282,14 +293,20 @@ static const char *macro_values[] = ]) ]) fi + + HAVE_C99_STDINT_H=0 + HAVE_SYS_BITYPES_H=0 + HAVE_SYS_INTTYPES_H=0 + STDINT_H=stdint.h if test "$gl_cv_header_working_stdint_h" = yes; then + HAVE_C99_STDINT_H=1 dnl Now see whether the system <stdint.h> works without dnl __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS defined. AC_CACHE_CHECK([whether stdint.h predates C++11], [gl_cv_header_stdint_predates_cxx11_h], [gl_cv_header_stdint_predates_cxx11_h=yes AC_COMPILE_IFELSE([ - AC_LANG_PROGRAM([[ + AC_LANG_PROGRAM([[ #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */ #include <stdint.h> ] @@ -306,27 +323,44 @@ int32_t i32 = INT32_C (0x7fffffff); AC_DEFINE([__STDC_LIMIT_MACROS], [1], [Define to 1 if the system <stdint.h> predates C++11.]) fi - STDINT_H= + AC_CACHE_CHECK([whether stdint.h has UINTMAX_WIDTH etc.], + [gl_cv_header_stdint_width], + [gl_cv_header_stdint_width=no + AC_COMPILE_IFELSE( + [AC_LANG_PROGRAM([[ + /* Work if build is not clean. */ + #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 + #ifndef __STDC_WANT_IEC_60559_BFP_EXT__ + #define __STDC_WANT_IEC_60559_BFP_EXT__ 1 + #endif + #include <stdint.h> + ]gl_STDINT_INCLUDES[ + int iw = UINTMAX_WIDTH; + ]])], + [gl_cv_header_stdint_width=yes])]) + if test "$gl_cv_header_stdint_width" = yes; then + STDINT_H= + fi else dnl Check for <sys/inttypes.h>, and for dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5). AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h]) if test $ac_cv_header_sys_inttypes_h = yes; then HAVE_SYS_INTTYPES_H=1 - else - HAVE_SYS_INTTYPES_H=0 fi - AC_SUBST([HAVE_SYS_INTTYPES_H]) if test $ac_cv_header_sys_bitypes_h = yes; then HAVE_SYS_BITYPES_H=1 - else - HAVE_SYS_BITYPES_H=0 fi - AC_SUBST([HAVE_SYS_BITYPES_H]) - gl_STDINT_TYPE_PROPERTIES - STDINT_H=stdint.h fi + + # The substitute stdint.h needs the substitute limit.h's _GL_INTEGER_WIDTH. + LIMITS_H=limits.h + AM_CONDITIONAL([GL_GENERATE_LIMITS_H], [test -n "$LIMITS_H"]) + + AC_SUBST([HAVE_C99_STDINT_H]) + AC_SUBST([HAVE_SYS_BITYPES_H]) + AC_SUBST([HAVE_SYS_INTTYPES_H]) AC_SUBST([STDINT_H]) AM_CONDITIONAL([GL_GENERATE_STDINT_H], [test -n "$STDINT_H"]) ]) @@ -504,8 +538,3 @@ dnl Remove this when we can assume autoconf >= 2.61. m4_ifdef([AC_COMPUTE_INT], [], [ AC_DEFUN([AC_COMPUTE_INT], [_AC_COMPUTE_INT([$2],[$1],[$3],[$4])]) ]) - -# Hey Emacs! -# Local Variables: -# indent-tabs-mode: nil -# End: diff --git a/m4/stdio_h.m4 b/m4/stdio_h.m4 index d82f1429e96..eaa25a01d49 100644 --- a/m4/stdio_h.m4 +++ b/m4/stdio_h.m4 @@ -1,14 +1,18 @@ -# stdio_h.m4 serial 46 -dnl Copyright (C) 2007-2017 Free Software Foundation, Inc. +# stdio_h.m4 serial 48 +dnl Copyright (C) 2007-2016 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. AC_DEFUN([gl_STDIO_H], [ - dnl For __USE_MINGW_ANSI_STDIO - AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) - + AH_VERBATIM([MINGW_ANSI_STDIO], +[/* Use GNU style printf and scanf. */ +#ifndef __USE_MINGW_ANSI_STDIO +# undef __USE_MINGW_ANSI_STDIO +#endif +]) + AC_DEFINE([__USE_MINGW_ANSI_STDIO]) AC_REQUIRE([gl_STDIO_H_DEFAULTS]) gl_NEXT_HEADERS([stdio.h]) diff --git a/m4/stdlib_h.m4 b/m4/stdlib_h.m4 index 81dbb0ba76d..3999068153d 100644 --- a/m4/stdlib_h.m4 +++ b/m4/stdlib_h.m4 @@ -1,5 +1,5 @@ -# stdlib_h.m4 serial 42 -dnl Copyright (C) 2007-2017 Free Software Foundation, Inc. +# stdlib_h.m4 serial 43 +dnl Copyright (C) 2007-2016 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -21,7 +21,7 @@ AC_DEFUN([gl_STDLIB_H], #endif ]], [_Exit atoll canonicalize_file_name getloadavg getsubopt grantpt initstate initstate_r mkdtemp mkostemp mkostemps mkstemp mkstemps - posix_openpt ptsname ptsname_r random random_r realpath rpmatch + posix_openpt ptsname ptsname_r qsort_r random random_r realpath rpmatch secure_getenv setenv setstate setstate_r srandom srandom_r strtod strtoll strtoull unlockpt unsetenv]) ]) @@ -85,6 +85,7 @@ AC_DEFUN([gl_STDLIB_H_DEFAULTS], HAVE_POSIX_OPENPT=1; AC_SUBST([HAVE_POSIX_OPENPT]) HAVE_PTSNAME=1; AC_SUBST([HAVE_PTSNAME]) HAVE_PTSNAME_R=1; AC_SUBST([HAVE_PTSNAME_R]) + HAVE_QSORT_R=1; AC_SUBST([HAVE_QSORT_R]) HAVE_RANDOM=1; AC_SUBST([HAVE_RANDOM]) HAVE_RANDOM_H=1; AC_SUBST([HAVE_RANDOM_H]) HAVE_RANDOM_R=1; AC_SUBST([HAVE_RANDOM_R]) diff --git a/m4/sys_types_h.m4 b/m4/sys_types_h.m4 index d1d640321fd..159b005b3d4 100644 --- a/m4/sys_types_h.m4 +++ b/m4/sys_types_h.m4 @@ -1,5 +1,5 @@ -# sys_types_h.m4 serial 5 -dnl Copyright (C) 2011-2017 Free Software Foundation, Inc. +# sys_types_h.m4 serial 6 +dnl Copyright (C) 2011-2016 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -22,3 +22,28 @@ AC_DEFUN_ONCE([gl_SYS_TYPES_H], AC_DEFUN([gl_SYS_TYPES_H_DEFAULTS], [ ]) + +# This works around a buggy version in autoconf <= 2.69. +# See <https://lists.gnu.org/archive/html/autoconf/2016-08/msg00014.html> + +m4_version_prereq([2.70], [], [ + +# This is taken from the following Autoconf patch: +# http://git.sv.gnu.org/cgit/autoconf.git/commit/?id=e17a30e98 + +m4_undefine([AC_HEADER_MAJOR]) +AC_DEFUN([AC_HEADER_MAJOR], +[AC_CHECK_HEADERS_ONCE([sys/types.h]) +AC_CHECK_HEADER([sys/mkdev.h], + [AC_DEFINE([MAJOR_IN_MKDEV], [1], + [Define to 1 if `major', `minor', and `makedev' are declared in + <mkdev.h>.])]) +if test $ac_cv_header_sys_mkdev_h = no; then + AC_CHECK_HEADER([sys/sysmacros.h], + [AC_DEFINE([MAJOR_IN_SYSMACROS], [1], + [Define to 1 if `major', `minor', and `makedev' are declared in + <sysmacros.h>.])]) +fi +]) + +]) diff --git a/m4/utimes.m4 b/m4/utimes.m4 index a4e140e6114..518824f218f 100644 --- a/m4/utimes.m4 +++ b/m4/utimes.m4 @@ -145,6 +145,6 @@ main () [gl_cv_func_working_utimes=no])]) if test $gl_cv_func_working_utimes = yes; then - AC_DEFINE([HAVE_WORKING_UTIMES], [1], [Define if utimes works properly. ]) + AC_DEFINE([HAVE_WORKING_UTIMES], [1], [Define if utimes works properly.]) fi ]) |