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