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glibc/aclocal.m4
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dnl We define the macro GLIBC_PROVIDES to do an AC_PROVIDE for each macro | |
dnl which appears in configure.in before the sysdep configure scripts are run. | |
dnl Each sysdep configure.in does GLIBC_PROVIDES first, to avoid any | |
dnl AC_REQUIREs or AC_BEFOREs duplicating their code. | |
dnl | |
define([AC_FD_MSG],6)dnl Autoconf lossage. | |
define([AC_FD_CC],5)dnl Autoconf lossage. | |
AC_DEFUN([GLIBC_PROVIDES], [dnl | |
AC_PROVIDE([AC_PROG_INSTALL])dnl | |
AC_PROVIDE([AC_PROG_RANLIB])dnl | |
AC_PROVIDE([AC_PROG_CC])dnl | |
AC_PROVIDE([AC_PROG_CPP])dnl | |
define([AC_LANG], [C])dnl | |
# This file is generated from configure.in by Autoconf. DO NOT EDIT! | |
])dnl | |
dnl | |
dnl Check for a symbol | |
dnl | |
AC_DEFUN(AC_CHECK_SYMBOL, [dnl | |
AC_MSG_CHECKING(for $1) | |
AC_CACHE_VAL(ac_cv_check_symbol_$1, [dnl | |
AC_TRY_LINK(, | |
changequote(,)dnl | |
extern char *$1[]; puts(*$1);, | |
changequote([,])dnl | |
ac_cv_check_symbol_$1=yes, ac_cv_check_symbol_$1=no)]) | |
if test "$ac_cv_check_symbol_$1" = yes; then | |
changequote(,)dnl | |
ac_tr_symbol=`echo $1 | tr '[a-z]' '[A-Z]'` | |
changequote([,])dnl | |
AC_DEFINE_UNQUOTED(HAVE_${ac_tr_symbol}) | |
fi | |
AC_MSG_RESULT($ac_cv_check_symbol_$1)])dnl | |
dnl | |
dnl Locate a program and check that its version is acceptable. | |
dnl AC_PROG_CHECK_VER(var, namelist, version-switch, | |
dnl [version-extract-regexp], version-glob [, do-if-fail]) | |
AC_DEFUN(AC_CHECK_PROG_VER, | |
[AC_CHECK_PROGS([$1], [$2]) | |
if test -z "[$]$1"; then | |
ac_verc_fail=yes | |
else | |
# Found it, now check the version. | |
AC_MSG_CHECKING([version of [$]$1]) | |
changequote(<<,>>)dnl | |
ac_prog_version=`<<$>>$1 $3 2>&1 ifelse(<<$4>>,,, | |
<<| sed -n 's/^.*patsubst(<<$4>>,/,\/).*$/\1/p'>>)` | |
case $ac_prog_version in | |
'') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;; | |
<<$5>>) | |
changequote([,])dnl | |
ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;; | |
*) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;; | |
esac | |
AC_MSG_RESULT([$ac_prog_version]) | |
fi | |
ifelse([$6],,, | |
[if test $ac_verc_fail = yes; then | |
$6 | |
fi]) | |
]) | |
dnl These modifications are to allow for an empty cross compiler tree. | |
dnl In the situation that cross-linking is impossible, the variable | |
dnl `cross_linkable' will be substituted with "yes". | |
dnl The vercheck macros are expected to have been called already. | |
AC_DEFUN(AC_PROG_CC_LOCAL, | |
[AC_BEFORE([$0], [AC_PROG_CPP])dnl | |
AC_PROG_CC_WORKS_LOCAL | |
AC_PROG_CC_GNU | |
if test $ac_cv_prog_gcc != yes; then | |
AC_MSG_ERROR([GNU libc must be compiled using GNU CC]) | |
fi | |
]) | |
AC_DEFUN(AC_PROG_CC_WORKS_LOCAL, | |
[AC_MSG_CHECKING([whether the C compiler ($CC $CFLAGS $LDFLAGS) works]) | |
AC_CACHE_VAL(ac_cv_prog_cc_works, | |
[AC_LANG_SAVE | |
AC_LANG_C | |
AC_TRY_COMPILER([main(){return(0);}], ac_cv_prog_cc_works, ac_cv_prog_cc_cross) | |
AC_LANG_RESTORE]) | |
AC_MSG_RESULT($ac_cv_prog_cc_works) | |
if test $ac_cv_prog_cc_works = no; then | |
cross_linkable=no | |
ac_cv_prog_cc_cross=yes | |
dnl AC_MSG_ERROR([installation or configuration problem: C compiler cannot create executables.]) | |
else | |
cross_linkable=yes | |
fi | |
AC_CACHE_CHECK( | |
[whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler], | |
ac_cv_prog_cc_cross, [:]) | |
AC_SUBST(cross_linkable) | |
cross_compiling=$ac_cv_prog_cc_cross | |
]) | |
AC_DEFUN(LIBC_PROG_FOO_GNU, | |
[# Most GNU programs take a -v and spit out some text including | |
# the word 'GNU'. Some try to read stdin, so give them /dev/null. | |
if $1 -o conftest -v </dev/null 2>&1 | grep GNU > /dev/null 2>&1; then | |
$2 | |
else | |
$3 | |
fi | |
rm -fr contest*]) | |
AC_DEFUN(LIBC_PROG_BINUTILS, | |
[# Was a --with-binutils option given? | |
if test -n "$path_binutils"; then | |
# Make absolute; ensure a single trailing slash. | |
path_binutils=`(cd $path_binutils; pwd) | sed 's%/*$%/%'` | |
CC="$CC -B$path_binutils" | |
fi | |
AS=`$CC -print-prog-name=as` | |
LD=`$CC -print-prog-name=ld` | |
AR=`$CC -print-prog-name=ar` | |
AC_SUBST(AR) | |
# ranlib has to be treated a bit differently since it might not exist at all. | |
RANLIB=`$CC -print-prog-name=ranlib` | |
if test $RANLIB = ranlib; then | |
# This extra check has to happen since gcc simply echos the parameter in | |
# case it cannot find the value in its own directories. | |
AC_CHECK_TOOL(RANLIB, ranlib, :) | |
fi | |
AC_SUBST(RANLIB) | |
# Determine whether we are using GNU binutils. | |
AC_CACHE_CHECK(whether $AS is GNU as, libc_cv_prog_as_gnu, | |
[LIBC_PROG_FOO_GNU($AS, libc_cv_prog_as_gnu=yes, libc_cv_prog_as_gnu=no)]) | |
rm -f a.out | |
gnu_as=$libc_cv_prog_as_gnu | |
AC_CACHE_CHECK(whether $LD is GNU ld, libc_cv_prog_ld_gnu, | |
[LIBC_PROG_FOO_GNU($LD, libc_cv_prog_ld_gnu=yes, libc_cv_prog_ld_gnu=no)]) | |
gnu_ld=$libc_cv_prog_ld_gnu | |
]) |