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-rw-r--r--libiberty/configure.in370
1 files changed, 316 insertions, 54 deletions
diff --git a/libiberty/configure.in b/libiberty/configure.in
index b0020d8bab4..05a9df1e975 100644
--- a/libiberty/configure.in
+++ b/libiberty/configure.in
@@ -1,66 +1,328 @@
-# This file is a shell script fragment that supplies the information
-# necessary for a configure script to process the program in
-# this directory. For more information, look at ../configure.
+dnl Process this file with autoconf to produce a configure script
-configdirs=
-srctrigger=getopt1.c
-srcname="-liberty library"
+AC_PREREQ(2.5)
+AC_INIT(pexecute.c)
-# per-host:
+dnl We use these options to decide which functions to include.
+AC_ARG_WITH(target-subdir,
+[ --with-target-subdir=SUBDIR Configuring with a cross compiler])
+AC_ARG_WITH(newlib,
+[ --with-newlib Configuring with newlib])
-files="alloca-norm.h"
-links="alloca-conf.h"
+if test "${srcdir}" = "."; then
+ if test -z "${with_target_subdir}"; then
+ libiberty_topdir="${srcdir}/.."
+ else
+ if test "${with_target_subdir}" != "."; then
+ libiberty_topdir="${srcdir}/${with_multisrctop}../.."
+ else
+ libiberty_topdir="${srcdir}/${with_multisrctop}.."
+ fi
+ fi
+else
+ libiberty_topdir="${srcdir}/.."
+fi
+AC_CONFIG_AUX_DIR($libiberty_topdir)
+
+AC_CANONICAL_HOST
+
+dnl When we start using automake:
+dnl AM_INIT_AUTOMAKE(libiberty, 1.0)
+
+dnl These must be called before AM_PROG_LIBTOOL, because it may want
+dnl to call AC_CHECK_PROG.
+AC_CHECK_TOOL(AR, ar)
+AC_CHECK_TOOL(RANLIB, ranlib, :)
+
+# FIXME: We temporarily define our own version of AC_PROG_CC. This is
+# copied from autoconf 2.12, but does not call AC_PROG_CC_WORKS. We
+# are probably using a cross compiler, which will not be able to fully
+# link an executable. This should really be fixed in autoconf
+# itself.
+
+AC_DEFUN(LIB_AC_PROG_CC,
+[AC_BEFORE([$0], [AC_PROG_CPP])dnl
+AC_PROVIDE([AC_PROG_CC])
+AC_CHECK_PROG(CC, gcc, gcc)
+if test -z "$CC"; then
+ AC_CHECK_PROG(CC, cc, cc, , , /usr/ucb/cc)
+ test -z "$CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
+fi
+
+AC_PROG_CC_GNU
+
+if test $ac_cv_prog_gcc = yes; then
+ GCC=yes
+dnl Check whether -g works, even if CFLAGS is set, in case the package
+dnl plays around with CFLAGS (such as to build both debugging and
+dnl normal versions of a library), tasteless as that idea is.
+ ac_test_CFLAGS="${CFLAGS+set}"
+ ac_save_CFLAGS="$CFLAGS"
+ CFLAGS=
+ AC_PROG_CC_G
+ if test "$ac_test_CFLAGS" = set; then
+ CFLAGS="$ac_save_CFLAGS"
+ elif test $ac_cv_prog_cc_g = yes; then
+ CFLAGS="-g -O2"
+ else
+ CFLAGS="-O2"
+ fi
+else
+ GCC=
+ test "${CFLAGS+set}" = set || CFLAGS="-g"
+fi
+])
+
+LIB_AC_PROG_CC
+
+AC_ISC_POSIX
+
+dnl When we start using libtool:
+dnl Default to a non shared library. This may be overridden by the
+dnl configure option --enable-shared.
+dnl AM_DISABLE_SHARED
+
+dnl When we start using libtool:
+dnl AM_PROG_LIBTOOL
+
+dnl When we start using automake:
+dnl AM_CONFIG_HEADER(config.h:config.in)
+AC_CONFIG_HEADER(config.h:config.in)
+
+dnl When we start using automake:
+dnl AM_MAINTAINER_MODE
+dnl AM_EXEEXT
+
+dnl When we start using automake:
+dnl AM_PROG_INSTALL
+AC_PROG_INSTALL
. ${srcdir}/config.table
host_makefile_frag=${frag}
+AC_SUBST_FILE(host_makefile_frag)
+
+# It's OK to check for header files. Although the compiler may not be
+# able to link anything, it had better be able to at least compile
+# something.
+AC_CHECK_HEADERS(sys/file.h sys/param.h stdlib.h string.h)
-# per-target:
-
-# post-target:
-
-# If this is the target libiberty, check at compile time whether we are using
-# newlib. If we are, we already know the files we need, since the linker
-# will fail when run on some of the newlib targets.
-if [ -n "${with_target_subdir}" ] ; then
- cat > Makefile.tem <<'!EOF!'
-CONFIG_H = xconfig.h
-NEEDED_LIST = xneeded-list
-
-xconfig.h: Makefile
- if [ -f ../newlib/Makefile ]; then \
- echo "#define NEED_sys_nerr 1" >xconfig.h; \
- echo "#define NEED_sys_errlist 1" >>xconfig.h; \
- echo "#define NEED_sys_siglist 1" >>xconfig.h; \
- echo "#define NEED_strsignal 1" >>xconfig.h; \
- echo "#define NEED_psignal 1" >>xconfig.h; \
- else \
- $(MAKE) $(FLAGS_TO_PASS) lconfig.h; \
- cp lconfig.h xconfig.h; \
- fi
-
-xneeded-list: Makefile
- if [ -f ../newlib/Makefile ]; then \
- echo insque.o random.o strdup.o alloca.o vasprintf.o >xneeded-list; \
- else \
- $(MAKE) $(FLAGS_TO_PASS) lneeded-list; \
- cp lneeded-list xneeded-list; \
- fi
-!EOF!
-sed -e "/^####/ r Makefile.tem" \
- -e '/INSTALL_DEST =/s/libdir/tooldir/' ${Makefile} > Makefile.tem3
-mv Makefile.tem3 ${Makefile}
-rm -f Makefile.tem
+# This is the list of functions which libiberty will provide if they
+# are not available on the host.
+
+funcs="asprintf"
+funcs="$funcs atexit"
+funcs="$funcs basename"
+funcs="$funcs bcmp"
+funcs="$funcs bcopy"
+funcs="$funcs bzero"
+funcs="$funcs clock"
+funcs="$funcs getcwd"
+funcs="$funcs getpagesize"
+funcs="$funcs index"
+funcs="$funcs insque"
+funcs="$funcs memchr"
+funcs="$funcs memcmp"
+funcs="$funcs memcpy"
+funcs="$funcs memmove"
+funcs="$funcs memset"
+funcs="$funcs random"
+funcs="$funcs rename"
+funcs="$funcs rindex"
+funcs="$funcs sigsetmask"
+funcs="$funcs strcasecmp"
+funcs="$funcs strchr"
+funcs="$funcs strdup"
+funcs="$funcs strncasecmp"
+funcs="$funcs strrchr"
+funcs="$funcs strstr"
+funcs="$funcs strtod"
+funcs="$funcs strtol"
+funcs="$funcs strtoul"
+funcs="$funcs tmpnam"
+funcs="$funcs vasprintf"
+funcs="$funcs vfprintf"
+funcs="$funcs vprintf"
+funcs="$funcs vsprintf"
+funcs="$funcs waitpid"
+
+# Also in the old function.def file: alloca, vfork, getopt.
+
+vars="sys_errlist sys_nerr sys_siglist"
+
+checkfuncs="getrusage on_exit psignal strerror strsignal sysconf times"
+
+# These are neither executed nor required, but they help keep
+# autoheader happy without adding a bunch of text to acconfig.h.
+if test "x" = "y"; then
+ AC_CHECK_FUNCS(asprintf atexit basename bcmp bcopy bzero clock getcwd)
+ AC_CHECK_FUNCS(getpagesize index insque memchr memcmp memcpy memmove)
+ AC_CHECK_FUNCS(memset random rename rindex sigsetmask strcasecmp)
+ AC_CHECK_FUNCS(strchr strdup strncasecmp strrchr strstr strtod strtol)
+ AC_CHECK_FUNCS(strtoul tmpnam vasprintf vfprintf vprintf vsprintf waitpid)
+ AC_DEFINE(HAVE_SYS_ERRLIST)
+ AC_DEFINE(HAVE_SYS_NERR)
+ AC_DEFINE(HAVE_SYS_SIGLIST)
+ AC_CHECK_FUNCS(getrusage on_exit psignal strerror strsignal sysconf times)
fi
-# We need multilib support, but only if configuring for the target.
-if [ -n "${with_target_subdir}" ] ; then
- if [ "${srcdir}" = "." ] ; then
- if [ "${with_target_subdir}" != "." ] ; then
- . ${with_multisrctop}../../config-ml.in
+# For each of these functions, if the host does not provide the
+# function we want to put FN.o in LIBOBJS, and if the host does
+# provide the function, we want to define HAVE_FN in config.h. Also,
+# if the host does not provide alloca, we set ALLOCA to alloca.o
+
+setobjs=
+if test -n "${with_target_subdir}"; then
+
+ # We are being configured with a cross compiler. AC_REPLACE_FUNCS
+ # may not work correctly, because the compiler may not be able to
+ # link executables.
+
+ # If we are being configured for newlib, we know which functions
+ # newlib provide and which ones we will be expected to provide.
+
+ if test "x${with_newlib}" = "xyes"; then
+ ALLOCA="alloca.o"
+ LIBOBJS="basename.o insque.o random.o strdup.o vasprintf.o"
+
+ for f in $funcs; do
+ case "$f" in
+ basename | insque | random | strdup | vasprintf)
+ ;;
+ *)
+ n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ AC_DEFINE_UNQUOTED($n)
+ ;;
+ esac
+ done
+
+ # newlib doesnt provide any of the variables in $vars, so we
+ # dont have to check them here.
+
+ # Of the functions in $checkfuncs, VxWorks only has strerror.
+ AC_DEFINE(HAVE_STRERROR)
+
+ setobjs=yes
+
+ fi
+fi
+
+if test -z "${setobjs}"; then
+ case "${host}" in
+
+ *-*-vxworks*)
+ # Handle VxWorks configuration specially, since on VxWorks the
+ # libraries are actually on the target board, not in the file
+ # system.
+ LIBOBJS="basename.o getpagesize.o insque.o random.o strcasecmp.o"
+ LIBOBJS="$LIBOBJS strncasecmp.o strdup.o vfork.o waitpid.o vasprintf.o"
+ for f in $funcs; do
+ case "$f" in
+ basename | getpagesize | insque | random | strcasecmp)
+ ;;
+ strncasecmp | strdup | vfork | waitpid | vasprintf)
+ ;;
+ *)
+ n=HAVE_`echo $f | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ AC_DEFINE_UNQUOTED($n)
+ ;;
+ esac
+ done
+
+ # VxWorks doesn't provide any of the variables in $vars, so we
+ # don't have to check them here.
+
+ # Of the functions in $checkfuncs, VxWorks only has strerror.
+ AC_DEFINE(HAVE_STRERROR)
+
+ setobjs=yes
+ ;;
+
+ esac
+fi
+
+if test -z "${setobjs}"; then
+
+ case "${host}" in
+
+ *-*-cygwin32*)
+ # The cygwin32 library actually uses a couple of files from
+ # libiberty when it is built. If we are building a native
+ # cygwin32, and we run the tests, we will appear to have these
+ # files. However, when we go on to build winsup, we will wind up
+ # with a library which does not have the files, since they should
+ # have come from libiberty.
+
+ # We handle this by removing the functions the winsup library
+ # provides from our shell variables, so that they appear to be
+ # missing.
+
+ funcs="`echo $funcs | sed -e 's/random//'`"
+ LIBOBJS="$LIBOBJS random.o"
+ vars="`echo $vars | sed -e 's/sys_siglist//'`"
+ checkfuncs="`echo $checkfuncs | sed -e 's/strsignal//' -e 's/psignal//`"
+ ;;
+
+ *-*-mingw32*)
+ # Under mingw32, sys_nerr and sys_errlist exist, but they are
+ # macros, so the test below won't find them.
+ vars="`echo $vars | sed -e 's/sys_nerr//' -e 's/sys_errlist//'`"
+ AC_DEFINE(HAVE_SYS_NERR)
+ AC_DEFINE(HAVE_SYS_ERRLIST)
+ ;;
+
+ esac
+
+ # We haven't set the list of objects yet. Use the standard autoconf
+ # tests. This will only work if the compiler works.
+ AC_PROG_CC_WORKS
+ AC_REPLACE_FUNCS($funcs)
+ AC_FUNC_ALLOCA
+ AC_FUNC_VFORK
+ if test $ac_cv_func_vfork_works = no; then
+ LIBOBJS="$LIBOBJS vfork.o"
+ fi
+ for v in $vars; do
+ AC_MSG_CHECKING([for $v])
+ AC_CACHE_VAL(libiberty_cv_var_$v,
+ [AC_TRY_LINK([int *p;], [extern int $v; p = &$v;],
+ [eval "libiberty_cv_var_$v=yes"],
+ [eval "libiberty_cv_var_$v=no"])])
+ if eval "test \"`echo '$libiberty_cv_var_'$v`\" = yes"; then
+ AC_MSG_RESULT(yes)
+ n=HAVE_`echo $v | tr 'abcdefghijklmnopqrstuvwxyz' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'`
+ AC_DEFINE_UNQUOTED($n)
else
- . ${with_multisrctop}../config-ml.in
+ AC_MSG_RESULT(no)
fi
- else
- . ${srcdir}/../config-ml.in
- fi
+ done
+ AC_CHECK_FUNCS($checkfuncs)
+fi
+
+# Install a library built with a cross compiler in $(tooldir) rather
+# than $(libdir).
+if test -z "${with_target_subdir}"; then
+ INSTALL_DEST=libdir
+else
+ INSTALL_DEST=tooldir
fi
+AC_SUBST(INSTALL_DEST)
+
+# We need multilib support, but only if configuring for the target.
+AC_OUTPUT(Makefile,
+[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
+if test -n "$CONFIG_FILES"; then
+ if test -n "${with_target_subdir}"; then
+ # FIXME: We shouldn't need to set ac_file
+ ac_file=Makefile
+ . ${libiberty_topdir}/config-ml.in
+ fi
+fi],
+srcdir=${srcdir}
+host=${host}
+target=${target}
+with_target_subdir=${with_target_subdir}
+with_multisubdir=${with_multisubdir}
+ac_configure_args="--enable-multilib ${ac_configure_args}"
+CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
+libiberty_topdir=${libiberty_topdir}
+)
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