# M4 macros used in building Autoconf test suites. -*- Autotest -*- # Copyright (C) 2000-2017, 2020 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 . m4_version_prereq([2.57]) # Used in many tests. m4_pattern_allow([^AS_EXIT$]) m4_pattern_allow([^m4_(define|shift)$]) # Programs this package provides AT_TESTED([autom4te autoconf autoheader autoupdate autoreconf ifnames]) # System-provided programs that this package relies on AT_TESTED([$PERL $M4]) # Enable colored test output. AT_COLOR_TESTS # Sanitize the environment used for tests. AT_PREPARE_TESTS( [# MAKEFLAGS should not be inherited from the parent environment. AS_UNSET([MAKEFLAGS]) # We do not want to read any external config.site file. # If CONFIG_SITE is not set, autoconf will look for config.site in # $prefix/share and $prefix/etc. AS_IF([test -e nonexistent], [AS_ERROR([something named 'nonexistent' exists in the test directory])]) CONFIG_SITE=`pwd`/nonexistent/config.site export CONFIG_SITE # Ensure MAKE is set to a useful value. Unlike the above, we *do* # want to inherit this variable from the parent environment and/or # our command line. : "${MAKE=make}" export MAKE ]) ## ---------------- ## ## Utility macros. ## ## ---------------- ## # AT_CMP(FILE-1, FILE-2) # ---------------------- # Check FILE-1 and FILE-2 for equality, like `cmp FILE-1 FILE-2'. m4_define([AT_CMP], [m4_ifval([$2],, [m4_fatal([AT_CMP takes two arguments.])])[]dnl AT_CHECK([$at_diff "$1" "$2"]) ])# AT_CMP ## ---------------- ## ## Testing syntax. ## ## ---------------- ## # AT_CHECK_SHELL_SYNTAX(PROGRAM) # ------------------------------ # If the shell handles `-n' well, use it to check the syntax of PROGRAM; # otherwise, do nothing. ksh93 -n also spits outs loads of warnings # about older constructs, but we don't care about the warnings. m4_define([AT_CHECK_SHELL_SYNTAX], [AT_SKIP_IF([test "$SHELL_N" = none]) AT_CHECK(["$SHELL_N" -n $1], [], [], [ignore])]) m4_define([AT_CHECK_PERL_SYNTAX], [AT_CHECK([autom4te_perllibdir=$abs_top_srcdir/lib $PERL -c "$abs_top_builddir"/bin/$1], 0, [], [ignore])]) ## ------------------ ## ## Testing autom4te. ## ## ------------------ ## # AT_CHECK_M4(COMMAND, [EXIT-STATUS = 0], STDOUT, STDERR) # ------------------------------------------------------- # If stderr is specified, normalize the observed stderr. # This (using GNU M4 1.4.6) # # /usr/local/bin/m4:script.4s:1: cannot open `foo': No such file or directory # autom4te: /usr/local/bin/m4 failed with exit status: 1 # # or this (GNU M4 1.4.11) # # /usr/local/bin/m4:script.4s:1: include: cannot open `foo': No such file or directory # autom4te: /usr/local/bin/m4 failed with exit status: 1 # # or this (GNU M4 1.4 installed as gm4) # # script.4s:1: /usr/local/bin/gm4: Cannot open foo: No such file or directory # autom4te: /usr/local/bin/gm4 failed with exit status: 1 # # or this (GNU M4 1.4.13 installed as m4-1.4.13): # # /usr/bin/m4-1.4.13:script.4s:1: include: cannot open `foo': No such file or directory # autom4te: /usr/bin/m4-1.4.13 failed with exit status: 1 # # becomes # # m4:script.4s:1: cannot open `foo': No such file or directory # autom4te: m4 failed with exit status: 1 # # Also, this # # configure.ac:6: warning: The macro `AC_LANG_SAVE' is obsolete. # configure.ac:6: You should run autoupdate. # ../../lib/autoconf/lang.m4:125: AC_LANG_SAVE is expanded from... # configure.ac:6: the top level # # becomes # # configure.ac:6: warning: The macro `AC_LANG_SAVE' is obsolete. # configure.ac:6: You should run autoupdate. # lang.m4: AC_LANG_SAVE is expanded from... # configure.ac:6: the top level # # We use the following sed patterns: # # (m4): ?(file): ?(line): # or (file): ?(line): ?(m4): # to m4:(file):(line): # # and # m4:(file):(line): Cannot open foo: # or m4:(file):(line): include: cannot open `foo': # to m4:(file):(line): cannot open `foo': # # and # autom4te: [^ ]m4 # or autom4te: [^ ]m4.exe # to autom4te: m4 # # and # (path)/(basename).m4: ?(line): (message) # to (basename).m4: (message) # # Moreover, DJGPP error messages include the error code in brackets; # remove the error code during normalization. # m4_define([AT_CHECK_M4], [AT_CHECK([$1], [$2], [$3], m4_case([$4], [], [], [ignore], [ignore], [stderr])) m4_case([$4], [], [], [ignore], [], [AT_CHECK([[mv stderr stderr-raw && sed 's/^[^:]*m4[-.ex0-9]*: *\([^:]*:\) *\([0-9][0-9]*: \)/m4:\1\2/ s/^\([^:]*:\) *\([0-9][0-9]*:\)[^:]*m4[-.ex0-9]*: /m4:\1\2 / s/: C\(annot open \)\([^`:]*\):/: c\1`\2'\'':/ s/: include:\( cannot open\)/:\1/ s/^autom4te: [^ ]*m4[.ex]* /autom4te: m4 / s/^autom4te: error: [^ ]*m4[.ex]* /autom4te: error: m4 / s!^.*/\([^/][^/]*\)\.m4: *[0-9][0-9]*: *!\1.m4: ! s!^.*/\([^/][^/]*\)\.m4: *[0-9][0-9]*: *[0-9][0-9]*: *!\1.m4: ! s/ (E[A-Z]*)$// ' stderr-raw >&2]], [0], [], [$4])]) ]) # AT_CHECK_AUTOM4TE(FLAGS, [EXIT-STATUS = 0], STDOUT, STDERR) # ----------------------------------------------------------- m4_define([AT_CHECK_AUTOM4TE], [AT_CHECK_M4([autom4te $1], [$2], [$3], [$4])]) ## ----------------- ## ## Testing M4sugar. ## ## ----------------- ## # AT_DATA_M4SUGAR(FILE-NAME, CONTENTS) # ------------------------------------ # Escape the invalid tokens with @&t@. m4_define([AT_DATA_M4SUGAR], [AT_DATA([$1], [m4_bpatsubst([$2], [\(@.\)\(.@\)\|\(m4\)\(_\)\|\(d\)\(nl\)], [\1\3\5@&t@\2\4\6])])]) # AT_CHECK_M4SUGAR(FLAGS, [EXIT-STATUS = 0], STDOUT, STDERR) # ---------------------------------------------------------- m4_define([AT_CHECK_M4SUGAR], [AT_KEYWORDS([m4sugar]) AT_CHECK_AUTOM4TE([--language=m4sugar script.4s -o script $1], [$2], [$3], [$4])]) ## -------------- ## ## Testing M4sh. ## ## -------------- ## # AT_DATA_M4SH(FILE-NAME, CONTENTS) # --------------------------------- # Escape the invalid tokens with @&t@. m4_define([AT_DATA_M4SH], [AT_DATA([$1], [m4_bpatsubst([$2], [\(@.\)\(.@\)\|\(m4\|AS\)\(_\)\|\(d\)\(nl\)], [\1\3\5@&t@\2\4\6])])]) # AT_CHECK_M4SH(FLAGS, [EXIT-STATUS = 0], STDOUT, STDERR) # ------------------------------------------------------- m4_define([AT_CHECK_M4SH], [AT_CHECK_AUTOM4TE([--language=m4sh script.as -o script $1], [$2], [$3], [$4])]) ## ------------------ ## ## Testing Autoconf. ## ## ------------------ ## # AT_DATA_AUTOCONF(FILE-NAME, CONTENTS) # ------------------------------------- # Escape the invalid tokens with @&t@. m4_define([AT_DATA_AUTOCONF], [AT_DATA([$1], [m4_bpatsubst([$2], [\(@.\)\(.@\)\|\(m4\|AS\|AC\)\(_\)\|\(d\)\(nl\)], [\1\3\5@&t@\2\4\6])])]) # AT_CONFIGURE_AC(BODY) # --------------------- # Create a full configure.ac running BODY, with a config header set up, # AC_OUTPUT, and environment checking hooks. m4_define([AT_CONFIGURE_AC], [AT_DATA([configure.ac], [[AC_INIT AC_CONFIG_HEADERS(config.h:config.hin) AC_STATE_SAVE(before)] $1 [AC_OUTPUT AC_STATE_SAVE(after) ]]) cp "$abs_top_srcdir/build-aux/install-sh" \ "$abs_top_srcdir/build-aux/config.guess" \ "$abs_top_srcdir/build-aux/config.sub" . cp "$abs_top_srcdir/tests/statesave.m4" aclocal.m4 ])# AT_CONFIGURE_AC # AT_CHECK_AUTOCONF(ARGS, [EXIT-STATUS = 0], STDOUT, STDERR) # ---------------------------------------------------------- # We always use "--force", to prevent problems with timestamps if the testsuite # were running too fast. m4_define([AT_CHECK_AUTOCONF], [AT_CHECK_M4([autoconf --force $1], [$2], [$3], [$4]) if test -s configure && test "$SHELL_N" != none; then AT_CHECK_SHELL_SYNTAX([configure]) fi ]) # AT_CHECK_AUTOHEADER(ARGS, EXPECTED_TMPLS, [EXIT-STATUS = 0], STDOUT, STDERR) # ---------------------------------------------------------------------------- # EXPECTED_TMPLS is a whitespace-separated list of template # definitions that should appear in the generated config.hin. # The stock definitions made by AC_INIT are also checked for. # If EXPECTED_TMPLS is the single word `ignore', or if the # expected exit status is not 0, this test is skipped. m4_define([AT_CHECK_AUTOHEADER], [AT_CHECK_M4([autoheader $1], [$3], [$4], [$5]) m4_if(m4_strip([$2]), [ignore], [], [m4_if(m4_default_nblank([$3], [0]), [0], [dnl if test -f config.h.in then config_h_in=config.h.in elif test -f config.hin then config_h_in=config.hin else AT_FAIL_IF([: "Cannot find autoheader template file"]) fi m4_set_add_all([ah_expected_tmpls], [PACKAGE_BUGREPORT], [PACKAGE_NAME], [PACKAGE_STRING], [PACKAGE_TARNAME], [PACKAGE_URL], [PACKAGE_VERSION])dnl m4_map_args_w([$2], [m4_set_add([ah_expected_tmpls],], [)])dnl AT_DATA([expout.in],[m4_set_dump([ah_expected_tmpls],[ ]) ]) AT_CHECK([sort -o expout expout.in]) AT_CHECK([[sed -ne 's/^[ ]*#[ ]*undef[ ][ ]*//p' \ $config_h_in | sort]], [0], [expout], []) AS_UNSET([config_h_in]) ])])]) # AT_CHECK_CONFIGURE(END-COMMAND, # [EXIT-STATUS = 0], # [STDOUT = IGNORE], STDERR) # --------------------------------------------- # `abs_top_srcdir' is needed so that `./configure' finds install-sh. # Using --srcdir is more expensive. m4_define([AT_CHECK_CONFIGURE], [AT_CAPTURE_FILE([config.log])[]dnl AT_CHECK([./configure $configure_options $1], [$2], m4_default([$3], [ignore]), [$4])]) # AT_CHECK_ENV # ------------ # Check that the full configure run remained in its variable name space, # and cleaned up tmp files. # # Perhaps grep -E is not supported, or perhaps it chokes on such a big regex. # In this case just don't pay attention to the env. It would be great # to keep the error message but we can't: that would break AT_CHECK. # # FreeBSD sh may intermingle the trace output from the egrep and grep # commands in the pipe, so turn off tracing for these. # # Some tests might exit prematurely when they find a problem, in # which case `env-after' is probably missing. Don't check it then. # # Here are the variables `configure' may modify during execution: # - ^as_ # M4sh's shell name space. # - ^ac_ # Autoconf's shell name space. # - prefix and exec_prefix # are kept undefined (NONE) until AC_OUTPUT which then sets them to # `/usr/local' and `${prefix}' for make. # - (host|build|target)(_(alias|cpu|vendor|os))? # Set by AC_CANONICAL_(HOST|BUILD|TARGET). # - cross_compiling # Set by AC_INIT. # - interpval # Set by AC_SYS_INTERPRETER. # - CONFIG_STATUS and DEFS # Set by AC_OUTPUT. # - AC_SUBST'ed variables # (FIXME: Generate a list of these automatically.) # - _|@|.[*#?$].|argv|ARGC|LINENO|OLDPWD|PIPESTATUS|RANDOM|SECONDS # |START_TIME|ToD|_AST_FEATURES # Some variables some shells use and change. # `.[*#?$].' catches `$#' etc. which are displayed like this: # | '!'=18186 # | '#'=0 # | '$'=6908 # m4_defun([AT_CHECK_ENV], [m4_require([_AT_CHECK_ENV])]dnl [AT_CHECK([ath_fn_check_env])]) m4_defun([_AT_CHECK_ENV], [AT_TEST_HELPER_FN([check_env], [], [Compare the directory and environment state both before and after a run, and return non-zero status if they differ inappropriately.], [# Compare directory listings. test -f state-ls.before || AS_ERROR([state-ls.before not present]) test -f state-ls.after \ && { $at_diff state-ls.before state-ls.after || return 1; } # Compare variable space dumps. if test -f state-env.before && test -f state-env.after; then set +x grep_failed=false for act_file in state-env.before state-env.after do ($EGREP -v '^(m4_join([|], [a[cs]_.*], [(exec_)?prefix|DEFS|CONFIG_STATUS], [CC|CFLAGS|CPP|GCC|CXX|CXXFLAGS|CXXCPP|GXX|F77|FFLAGS|FLIBS|G77], [ERL|ERLC|ERLCFLAGS|ERLANG_PATH_ERL|ERLANG_ROOT_DIR|ERLANG_LIB_DIR], [ERLANG_LIB_DIR_.*|ERLANG_LIB_VER_.*|ERLANG_INSTALL_LIB_DIR], [ERLANG_INSTALL_LIB_DIR_.*|ERLANG_ERTS_VER|OBJC|OBJCPP|OBJCFLAGS], [OBJCXX|OBJCXXCPP|OBJCXXFLAGS], [GOC|GOFLAGS], [OPENMP_(C|CXX)FLAGS], [LIBS|LIB@&t@OBJS|LTLIBOBJS|LDFLAGS], [INSTALL(_(DATA|PROGRAM|SCRIPT))?], [EXEEXT|OBJEXT], [CYGWIN|EMXOS2|ISC|MINGW32|MINIX|MSYS|XENIX], [X_(CFLAGS|(EXTRA_|PRE_)?LIBS)|x_(includes|libraries)|(have|no)_x], [(host|build|target)(_(alias|cpu|vendor|os))?], [cross_compiling|U], [interpval|PATH_SEPARATOR], [GFC|F77_DUMMY_MAIN|f77_(case|underscore)], [FC(_DUMMY_MAIN|FLAGS|LIBS|FLAGS_[fF]|_MODEXT|_MODINC|_MODOUT|_DEFINE)?], [ALLOCA|GETLOADAVG_LIBS|KMEM_GROUP|NEED_SETGID|POW_LIB], [AWK|LEX|LEXLIB|LEX_OUTPUT_ROOT|LN_S|M4|MKDIR_P|RANLIB|SET_MAKE|YACC], [GREP|[EF]GREP|SED], [[_@]|.[*@%:@?$].], [argv|ARGC|LINENO|BASH_ARGC|BASH_ARGV|OLDPWD|PIPESTATUS|RANDOM], [SECONDS|START_TIME|ToD|_AST_FEATURES]))=' \ $act_file || test $? -eq 1 || echo failed >&2 ) 2>stderr-$act_file | # There may be variables spread on several lines; remove latter lines. $GREP '^m4_defn([m4_re_word])=' >clean-$act_file || test $? -eq 1 || grep_failed=: test -s stderr-$act_file && grep_failed=: done $at_traceon $grep_failed || $at_diff clean-state-env.before clean-state-env.after fi ])]) # AT_CONFIG_CMP(VAR-FILE-A, VAR-FILE-B, [EXTRA-VARIANCE]) # ------------------------------------------------------- # Check the outcomes of two configure runs for equality by comparing dumps of # their shell variables. VAR-FILE-A and VAR-FILE-B are two `set'-style shell # variable space dumps. # # We permit variance between runs in the following shell variables: # - ^as_ # M4sh's shell name space. # - ^ac_, excluding ^ac_cv_ # Autoconf's private shell name space. # - Variables with unstable values in at least some shells: # - OLDPWD [bash, zsh] # - PPID [bash, zsh] # - RANDOM [bash, zsh] # - SECONDS [bash, zsh] # - START_TIME [NetBSD sh] # - ToD [NetBSD sh] # - '$' [zsh] # - argv [zsh] # - ARGC [zsh] # - BASH_ARGC [bash] # - BASH_ARGV [bash] # - LINENO [Posix] # - _AST_FEATURES [ksh93] # - Optionally, variables that are expected to vary in a particular test. # This is controlled by the EXTRA-VARIANCE argument, which is a # whitespace-separated sequence of tokens. Each token means to ignore # one or more additional variables and/or rename some variables, as follows: # # cross: ignore cross_compiling # cxx: ignore all of: # - CC, CPP, CCC, CXX, CXXCPP, CFLAGS, CXXFLAGS, GCC, GXX # - ac_cv_env_(any of the above)_(set|value) # - ac_cv_c_compiler_gnu, ac_cv_cxx_compiler_gnu # - ac_cv_c_decl_report, ac_cv_cxx_decl_report # - ac_cv_prog_c_*, ac_cv_prog_cxx_*, # - ac_cv_prog_(ac_ct_)?(CC|CXX|CPP|CXXCPP) # + other ac_cv_c_* are renamed to ac_cv_cxx_* # + OPENMP_CFLAGS is renamed to OPENMP_CXXFLAGS # vary:NAME (where NAME is any identifier): ignore ac_cv_NAME # # Furthermore, it is okay for a non-cache variable initialized to empty in one # run to be unset in another run. This happens when, for example, cache update # code tries a number of values in LIBS and eventually restores LIBS to its # original value. If LIBS was previously unset, it will have become set and # empty. (OTOH, cache variables indicate the result of the test even if they # are empty, so we have to be strict about them.) # # Lines that do not look like `foo=bar' are probably latter lines of # multiline values; trim them. m4_define([AT_CONFIG_CMP], [for act_file in $1 $2 do $SED '/^ac_cv_/ b skip /^m4_defn([m4_re_word])=./ !d /^[[^=]]*='\'''\''$/ d /^a[[cs]]_/ d : skip /^OLDPWD=/ d /^PPID=/ d /^RANDOM=/ d /^SECONDS=/ d /^START_TIME=/ d /^ToD=/ d /'\'\\\$\''=/ d /^argv=/ d /^ARGC=/ d /^BASH_ARGC=/ d /^BASH_ARGV=/ d /^LINENO=/ d /^_AST_FEATURES=/ d m4_map_args_w([$3], [_AT_CONFIG_CMP_PRUNE(], [)])dnl ' < $act_file > at_config_vars-$act_file done AT_CMP([at_config_vars-$1], [at_config_vars-$2])[]dnl ])# AT_CONFIG_CMP # _AT_CONFIG_CMP_PRUNE(TOKEN) # --------------------------- # Subroutine of AT_CONFIG_CMP which implements the extra-variance rules # described above. Expands to additional sed commands to be inserted in # the program above. # Note for future readers: not all sed implementations allow alternations # in regexes (e.g. /^ac_cv_env_CC_\(set\|value\)=/ would not be portable). m4_define([_AT_CONFIG_CMP_PRUNE], [m4_bmatch([$1], [^cross$], [ /^cross_compiling=/ d ], [^cxx$], [ /^CC=/ d /^CPP=/ d /^CCC=/ d /^CXX=/ d /^CXXCPP=/ d /^CFLAGS=/ d /^CXXFLAGS=/ d /^GCC=/ d /^GXX=/ d /^ac_cv_env_CC_set=/ d /^ac_cv_env_CC_value=/ d /^ac_cv_env_CPP_set=/ d /^ac_cv_env_CPP_value=/ d /^ac_cv_env_CFLAGS_set=/ d /^ac_cv_env_CFLAGS_value=/ d /^ac_cv_env_GCC_set=/ d /^ac_cv_env_GCC_value=/ d /^ac_cv_env_CCC_set=/ d /^ac_cv_env_CCC_value=/ d /^ac_cv_env_CXX_set=/ d /^ac_cv_env_CXX_value=/ d /^ac_cv_env_CXXCPP_set=/ d /^ac_cv_env_CXXCPP_value=/ d /^ac_cv_env_CXXFLAGS_set=/ d /^ac_cv_env_CXXFLAGS_value=/ d /^ac_cv_env_GXX_set=/ d /^ac_cv_env_GXX_value=/ d /^ac_cv_prog_CC=/ d /^ac_cv_prog_CXX=/ d /^ac_cv_prog_CPP=/ d /^ac_cv_prog_CXXCPP=/ d /^ac_cv_prog_ac_ct_CC=/ d /^ac_cv_prog_ac_ct_CXX=/ d /^ac_cv_prog_ac_ct_CPP=/ d /^ac_cv_prog_ac_ct_CXXCPP=/ d /^ac_cv_c_compiler_gnu=/ d /^ac_cv_cxx_compiler_gnu=/ d /^ac_cv_c_decl_report=/ d /^ac_cv_cxx_decl_report=/ d /^ac_cv_prog_c_@<:@^=@:>@*=/ d /^ac_cv_prog_cc_@<:@^=@:>@*=/ d /^ac_cv_prog_cxx_@<:@^=@:>@*=/ d s/^ac_cv_c_/ac_cv_cxx_/ s/^OPENMP_CFLAGS=/OPENMP_CXXFLAGS=/ ], [^vary:], [ /^ac_cv_]m4_bpatsubsts([$1], [\ at_defines-$act_file done AT_CMP([at_defines-$1], [at_defines-$2])[]dnl ])])# AT_DEFINES_CMP # _AT_DEFINES_CMP_PRUNE(TOKEN) # --------------------------- # Subroutine of AT_DEFINES_CMP which implements the extra-variance rules # described above. Expands to one or more sed commands. # After quadrigraph replacement, each sed command group will be # /#define macro_name[ (]/ d ;#) # /#undef macro_name[ (]/ d ;#) # AC_DEFINE never emits tabs or puts whitespace between '#' and # 'define' or 'undef', so this is sufficient. m4_define([_AT_DEFINES_CMP_PRUNE], [m4_bmatch([$1], [^vary:], [ /@%:@define ]m4_bpatsubsts([$1], [\@/ d ;@%:@@:}@ /@%:@undef ]m4_bpatsubsts([$1], [\@/ d ;@%:@@:}@ ], [m4_fatal([unrecognized AT_DEFINES_CMP variance token: "$1"])])]) # AT_PRESERVE_CONFIG_STATUS(SUFFIX) # --------------------------------- # Copy the files 'state-env.after', 'config.h', 'config.log', and # 'config.status' to names ending with SUFFIX, so they are not # clobbered by a subsequent run of configure. m4_define([AT_PRESERVE_CONFIG_STATUS], [cp -f state-env.after state-env.$1 cp -f config.h config-h.$1 cp -f config.log config-log.$1 cp -f config.status config-status.$1 ]) # AT_CHECK_DEFINES(CONTENT) # ------------------------- # Verify that config.h, once stripped, is CONTENT. # Stripping consists of keeping CPP lines (i.e. containing a hash), # but those of automatically checked features (STDC_HEADERS etc.) # and symbols (PACKAGE_...). # AT_CHECK_HEADER is a better name, but too close from AC_CHECK_HEADER. m4_define([AT_CHECK_DEFINES], [AT_CHECK([[sed '/#/!d /INTTYPES_H/d /MEMORY_H/d /PACKAGE_/d /STDC_HEADERS/d /STDINT_H/d /STDIO_H/d /STDLIB_H/d /STRING_H/d /STRINGS_H/d /SYS_STAT_H/d /SYS_TYPES_H/d /UNISTD_H/d' config.h]],, [$1])]) # AT_CHECK_AUTOUPDATE # ------------------- m4_define([AT_CHECK_AUTOUPDATE], [AT_CHECK([autoupdate $1], [$2], [$3], [$4]) ]) # AT_CHECK_MAKE(MAKEARGS, DIRECTORY, EXIT-STATUS, # [STDOUT = IGNORE], [STDERR = IGNORE]) # --------------------------------------------------------------- # Run make in DIRECTORY (default `.'), passing MAKEARGS on the command # line. EXIT-STATUS, STDOUT, and STDERR are as for AT_CHECK. # The environment variable MAKE is honored if present. # The environment variable MAKEFLAGS is *cleared*. # If EXIT-STATUS is 1, an exit status of either 1 or 2 is considered # an acceptable result, because there are situations where BSD make will # exit with status 1 but GNU make will instead exit with status 2. m4_define([AT_CHECK_MAKE], [AT_CHECK( m4_if(m4_default([$2], [.]), [.], [], [cd "$2" && ])[$][MAKE]m4_ifnblank([$1],[ $1])[]m4_if([$3], [1], [[ dnl pacify editors that don't understand sh case: (( case $? in 1|2) exit 1;; *) exit $?;; esac]]), [$3], m4_default([$4], [ignore]), m4_default([$5], [ignore])) ]) # _AT_CHECK_AC_MACRO(AC-BODY, [PRE-TESTS], [AUTOCONF-FLAGS]) # ---------------------------------------------------------- # Create a minimalist configure.ac running the macro named # NAME-OF-THE-MACRO, check that autoconf runs on that script, # and that the generated configure script runs without error. m4_define([_AT_CHECK_AC_MACRO], [AT_CONFIGURE_AC([$1]) $2 AT_CHECK_AUTOCONF([$3]) AT_CHECK_AUTOHEADER([$3], [ignore]) AT_CHECK_CONFIGURE AT_CHECK_ENV ])# _AT_CHECK_AC_MACRO # AT_CHECK_CONFIGURE_AC(NAME, AC-BODY, [AUTOCONF-FLAGS], # [PRE-TESTS], [POST-TESTS]) # ----------------------------------------------------- # Shorthand for a complete test "group" consisting of a single # invocation of _AT_CHECK_AC_MACRO, possibly with some additional # tests executed before and after. m4_define([AT_CHECK_CONFIGURE_AC], [AT_SETUP([$1]) _AT_CHECK_AC_MACRO([$2], [$4], [$3]) $5 AT_CLEANUP ]) # AT_CHECK_MACRO(MACRO, [MACRO-USE], [ADDITIONAL-CMDS], # [AUTOCONF-FLAGS], [TEST-PARAMETERS], [PRETEST-CMDS]) # ----------------------------------------------------- # Create a minimalist configure.ac running the macro named MACRO # (using the code in MACRO-USE if that argument is not empty, # otherwise a bare invocation of MACRO with no arguments), # check that autoconf runs on that script, # and that the generated configure script runs without error. # AUTOCONF-FLAGS are passed to all invocations of autoconf. # # We always generate two variants of the minimalist configure.ac, # with and without forcing the script into cross-compilation mode # before executing MACRO-USE. If a C++ compiler is available, we # generate two more variants in which MACRO-USE is invoked while # AC_LANG([C++]) is in effect; as before, one forces the script into # cross-compilation mode and the other doesn't. All variants of the # generated configure script are run twice, once with an empty cache, # and once with a cache primed by the previous run. # # All four (or eight, if C++ is available) runs are expected to # produce the same results, except for the value of 'cross_compiling' # and differences due to running AC_PROG_CXX instead of AC_PROG_CC. # (See AT_CONFIG_CMP for details.) # # If ADDITIONAL-CMDS are present, they are executed after the first # pair of tests (with the C compiler, in native mode). # # If PRETEST-CMDS are present, they are executed immediately after # AT_SETUP; use this if the test needs to be skipped conditionally, # for example. # # If TEST-PARAMETERS are present, they should be a space-separated # list of modifiers to how the test is carried out. Currently # the following modifiers are defined: # # - `no-cross': Don't test this macro in cross-compilation mode. # This is for macros that use AC_RUN_IFELSE, and therefore, when # cross-compiling, they either crash or give a `best guess' answer # that may be wrong. # # - `cxx_cv_varies:NAME': The value of the cache variable ac_cv_NAME # may legitimately vary between the C tests and the C++ tests. # # - `cxx_define_varies:NAME' The value of the AC_DEFINEd macro NAME # may legitimately vary between the C tests and the C++ tests. m4_define([AT_CHECK_MACRO], [AT_SETUP([$1]) m4_n([$6])dnl # C compiler, native mode. AT_CONFIGURE_AC([m4_default([$2], [$1])]) AT_CHECK_AUTOCONF([$4]) AT_CHECK_AUTOHEADER([$4], [ignore]) cp -f configure.ac configure-ac.c-native cp -f configure configure.c-native cp -f config.hin config-hin.c-native AT_CHECK_CONFIGURE([-C]) AT_PRESERVE_CONFIG_STATUS([c-native-r1]) AT_CHECK_ENV AT_CHECK_CONFIGURE([-C]) AT_PRESERVE_CONFIG_STATUS([c-native-r2]) AT_CHECK_ENV AT_DEFINES_CMP([config-h.c-native-r1], [config-h.c-native-r2]) AT_CONFIG_CMP([state-env.c-native-r1], [state-env.c-native-r2]) m4_n([$3])dnl m4_bmatch([$5], [\], [], [dnl # C compiler, cross-compilation mode. rm -rf config.cache autom4te.cache AT_CONFIGURE_AC( [cross_compiling=yes ac_tool_warned=yes m4_default([$2], [$1])]) AT_CHECK_AUTOCONF([$4]) AT_CHECK_AUTOHEADER([$4], [ignore]) cp -f configure.ac configure-ac.c-cross cp -f configure configure.c-cross cp -f config.hin config-hin.c-cross AT_CHECK_CONFIGURE([-C]) AT_PRESERVE_CONFIG_STATUS([c-cross-r1]) AT_CHECK_ENV AT_DEFINES_CMP([config-h.c-native-r1], [config-h.c-cross-r1]) AT_CONFIG_CMP([state-env.c-native-r1], [state-env.c-cross-r1], [cross]) AT_CHECK_CONFIGURE([-C]) AT_PRESERVE_CONFIG_STATUS([c-cross-r2]) AT_CHECK_ENV AT_DEFINES_CMP([config-h.c-native-r1], [config-h.c-cross-r2]) AT_CONFIG_CMP([state-env.c-native-r1], [state-env.c-cross-r2], [cross]) ])dnl # To save time, skip the C++-mode tests for any macro that did not # transitively require AC_PROG_CC; it won't make any difference. if grep '^CC=' state-env.c-native-r1 > /dev/null 2>&1; then # C++ compiler, native mode. rm -rf config.cache autom4te.cache AT_CONFIGURE_AC( [AC_LANG([C++]) m4_default([$2], [$1])]) # Autoconf may fail here because of an AC_LANG_ASSERT([C]); this # means the macro is specific to C and should not be tested with the # C++ compiler. AT_CHECK_AUTOCONF([$4], [ignore], [ignore], [stderr]) if test -s stderr; then AT_CHECK([grep 'error: AC_LANG_ASSERT: current language is not C' stderr], [0], [ignore], [ignore]) else AT_CHECK_AUTOHEADER([$4], [ignore]) cp -f configure.ac configure-ac.cxx-native cp -f configure configure.cxx-native cp -f config.hin config-hin.cxx-native # If this configure pass fails with code 77, that means there is no # C++ compiler available; don't mark the entire test group skipped, # just skip the rest of the C++ testing. AT_CHECK_CONFIGURE([-C; status=$? if test $status -eq 77; then touch at-no-cxx exit 0 else exit $status fi ]) if test ! -f at-no-cxx; then AT_PRESERVE_CONFIG_STATUS([cxx-native-r1]) AT_CHECK_ENV AT_DEFINES_CMP([config-h.c-native-r1], [config-h.cxx-native-r1], _AT_FILTER_CXX_DEFINE_VARIES([$5])) AT_CONFIG_CMP([state-env.c-native-r1], [state-env.cxx-native-r1], [cxx ]_AT_FILTER_CXX_CV_VARIES([$5])) AT_CHECK_CONFIGURE([-C]) AT_PRESERVE_CONFIG_STATUS([cxx-native-r2]) AT_CHECK_ENV AT_DEFINES_CMP([config-h.cxx-native-r1], [config-h.cxx-native-r2]) AT_CONFIG_CMP([state-env.cxx-native-r1], [state-env.cxx-native-r2]) m4_bmatch([$5], [\], [], [dnl # Fourth run: C++ compiler, cross-compilation mode. rm -rf config.cache autom4te.cache AT_CONFIGURE_AC( [cross_compiling=yes ac_tool_warned=yes AC_LANG([C++]) m4_default([$2], [$1])]) AT_CHECK_AUTOCONF([$4]) AT_CHECK_AUTOHEADER([$4], [ignore]) cp -f configure.ac configure-ac.cxx-cross cp -f configure configure.cxx-cross cp -f config.hin config-hin.cxx-cross AT_CHECK_CONFIGURE([-C]) AT_PRESERVE_CONFIG_STATUS([cxx-cross-r1]) AT_CHECK_ENV AT_DEFINES_CMP([config-h.cxx-native-r1], [config-h.cxx-cross-r1]) AT_CONFIG_CMP([state-env.cxx-native-r1], [state-env.cxx-cross-r1], [cross]) AT_CHECK_CONFIGURE([-C]) AT_PRESERVE_CONFIG_STATUS([cxx-cross-r2]) AT_CHECK_ENV AT_DEFINES_CMP([config-h.cxx-cross-r1], [config-h.cxx-cross-r2]) AT_CONFIG_CMP([state-env.cxx-cross-r1], [state-env.cxx-cross-r2]) ])dnl fi # C++ compiler available fi # macro can be used with C++ fi # C++ makes a difference AT_CLEANUP ])# AT_CHECK_MACRO # _AT_FILTER_CXX_CV_VARIES(TEST-PARAMETERS) # --------------------------------------------- # Subroutine of AT_CHECK_MACRO that expands to a sequence of # zero or more `vary:NAME' tokens, one for each occurrence of # `cxx_cv_varies:NAME' in TEST-PARAMETERS. m4_define([_AT_FILTER_CXX_CV_VARIES], [m4_map_args_w([$1], [_AT_FILTER_CXX_CV_VARY(], [)], [ ])]) m4_define([_AT_FILTER_CXX_CV_VARY], [m4_bmatch([$1], [^cxx_cv_varies:], [m4_bpatsubsts([$1], [\