1 dnl We require that everyone use exactly the same Autoconf version so that
2 dnl the internal functions defined and used by the main configure script
3 dnl match those expected by the fragments.
4 m4_define([GLIBC_AUTOCONF_VERSION], [2.68])
5 m4_if(m4_defn([AC_AUTOCONF_VERSION]), GLIBC_AUTOCONF_VERSION, [],
7 Exactly version GLIBC_AUTOCONF_VERSION of Autoconf is required but you have
8 m4_defn([AC_AUTOCONF_VERSION])
11 dnl We define the macro GLIBC_PROVIDES to do an AC_PROVIDE for each macro
12 dnl which appears in configure.in before the sysdep configure scripts are run.
13 dnl Each sysdep configure.in does GLIBC_PROVIDES first, to avoid any
14 dnl AC_REQUIREs or AC_BEFOREs duplicating their code.
16 define([GLIBC_PROVIDES], [dnl
17 AC_PROVIDE([AC_CONFIG_AUX_DIR_DEFAULT])dnl
18 AC_PROVIDE([AC_CONFIG_SUBDIRS])dnl
19 AC_PROVIDE([_AS_ECHO_N_PREPARE])dnl
20 AC_PROVIDE([_AS_ECHO_PREPARE])dnl
21 AC_PROVIDE([_AS_CR_PREPARE])dnl
22 AC_PROVIDE([_AS_TR_SH_PREPARE])dnl
23 AC_PROVIDE([_AS_VAR_ARITH_PREPARE])dnl
24 AC_PROVIDE([AC_PROG_INSTALL])dnl
25 AC_PROVIDE([AC_PROG_CC])dnl
26 AC_PROVIDE([AC_PROG_CPP])dnl
27 AC_PROVIDE([_AS_PATH_SEPARATOR_PREPARE])dnl
28 AC_PROVIDE([_AS_TEST_PREPARE])dnl
29 AC_PROVIDE([_AS_BASENAME_PREPARE])dnl
30 AC_PROVIDE([_AS_ME_PREPARE])dnl
31 AC_PROVIDE([_AS_LINENO_PREPARE])dnl
32 AC_PROVIDE([AS_SHELL_FN_as_fn_set_status])dnl
33 AC_PROVIDE([AS_SHELL_FN_as_fn_exit])dnl
34 AC_PROVIDE([AS_SHELL_FN_as_fn_arith])dnl
35 AC_PROVIDE([AS_SHELL_FN_ac_fn_c_try_compile])dnl
36 define([AS_MESSAGE_LOG_FD],5)dnl
37 define([AS_MESSAGE_FD],6)dnl
38 dnl Ripped out of AS_INIT, which does more cruft we do not want.
39 m4_wrap([m4_divert_pop([BODY])[]])
40 m4_divert_push([BODY])[]dnl
41 dnl End of ripped out of AS_INIT.
42 # This file is generated from configure.in by Autoconf. DO NOT EDIT!
43 define([_AC_LANG], [C])dnl
46 dnl Check for a symbol
48 AC_DEFUN([AC_CHECK_SYMBOL], [dnl
49 AC_MSG_CHECKING(for $1)
50 AC_CACHE_VAL(ac_cv_check_symbol_$1, [dnl
53 extern char *$1[]; puts(*$1);,
55 ac_cv_check_symbol_$1=yes, ac_cv_check_symbol_$1=no)])
56 if test "$ac_cv_check_symbol_$1" = yes; then
58 ac_tr_symbol=`echo $1 | tr '[a-z]' '[A-Z]'`
60 AC_DEFINE_UNQUOTED(HAVE_${ac_tr_symbol})
62 AC_MSG_RESULT($ac_cv_check_symbol_$1)])dnl
65 dnl Locate a program and check that its version is acceptable.
66 dnl AC_PROG_CHECK_VER(var, namelist, version-switch,
67 dnl [version-extract-regexp], version-glob [, do-if-fail])
68 AC_DEFUN([AC_CHECK_PROG_VER],
69 [AC_CHECK_PROGS([$1], [$2])
70 if test -z "[$]$1"; then
73 # Found it, now check the version.
74 AC_MSG_CHECKING([version of [$]$1])
76 ac_prog_version=`<<$>>$1 $3 2>&1 ifelse(<<$4>>,,,
77 <<| sed -n 's/^.*patsubst(<<$4>>,/,\/).*$/\1/p'>>)`
78 case $ac_prog_version in
79 '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
82 ac_prog_version="$ac_prog_version, ok"; ac_verc_fail=no;;
83 *) ac_prog_version="$ac_prog_version, bad"; ac_verc_fail=yes;;
86 AC_MSG_RESULT([$ac_prog_version])
89 [if test $ac_verc_fail = yes; then
94 dnl These modifications are to allow for an empty cross compiler tree.
95 define([_AC_COMPILER_EXEEXT], [EXEEXT=
98 AC_DEFUN([LIBC_PROG_FOO_GNU],
99 [# Most GNU programs take a -v and spit out some text including
100 # the word 'GNU'. Some try to read stdin, so give them /dev/null.
101 if $1 -o conftest -v </dev/null 2>&1 | grep GNU > /dev/null 2>&1; then
108 AC_DEFUN([LIBC_PROG_BINUTILS],
109 [# Was a --with-binutils option given?
110 if test -n "$path_binutils"; then
111 # Make absolute; ensure a single trailing slash.
112 path_binutils=`(cd $path_binutils; pwd) | sed 's%/*$%/%'`
113 CC="$CC -B$path_binutils"
115 AS=`$CC -print-prog-name=as`
116 LD=`$CC -print-prog-name=ld`
117 AR=`$CC -print-prog-name=ar`
119 OBJDUMP=`$CC -print-prog-name=objdump`
121 OBJCOPY=`$CC -print-prog-name=objcopy`
124 # Determine whether we are using GNU binutils.
125 AC_CACHE_CHECK(whether $AS is GNU as, libc_cv_prog_as_gnu,
126 [LIBC_PROG_FOO_GNU($AS, libc_cv_prog_as_gnu=yes, libc_cv_prog_as_gnu=no)])
128 gnu_as=$libc_cv_prog_as_gnu
130 AC_CACHE_CHECK(whether $LD is GNU ld, libc_cv_prog_ld_gnu,
131 [LIBC_PROG_FOO_GNU($LD, libc_cv_prog_ld_gnu=yes, libc_cv_prog_ld_gnu=no)])
132 gnu_ld=$libc_cv_prog_ld_gnu
135 dnl Run a static link test with -nostdlib -nostartfiles.
136 dnl LIBC_TRY_LINK_STATIC([code], [action-if-true], [action-if-false])
137 AC_DEFUN([LIBC_TRY_LINK_STATIC],
138 [cat > conftest.c <<EOF
139 int _start (void) { return 0; }
140 int __start (void) { return 0; }
143 AS_IF([AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest
144 conftest.c -static -nostartfiles -nostdlib
145 1>&AS_MESSAGE_LOG_FD])],
149 dnl Test a compiler option or options with an empty input file.
150 dnl LIBC_TRY_CC_OPTION([options], [action-if-true], [action-if-false])
151 AC_DEFUN([LIBC_TRY_CC_OPTION],
152 [AS_IF([AC_TRY_COMMAND([${CC-cc} $1 -xc /dev/null -S -o /dev/null])],
155 dnl Find and source sysdeps/*/preconfigure.
156 dnl LIBC_PRECONFIGURE([$srcdir], [for])
157 AC_DEFUN([LIBC_PRECONFIGURE], [dnl
158 if frags=`ls -d $1/sysdeps/*/preconfigure 2> /dev/null`
160 AC_MSG_CHECKING($2 preconfigure fragments)
161 for frag in $frags; do
162 name=`echo "$frag" | sed 's@/[[^/]]*[$]@@;s@^.*/@@'`
163 echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD
169 # These two macros are taken from GCC's config/acx.m4.
170 dnl Support the --with-pkgversion configure option.
171 dnl ACX_PKGVERSION(default-pkgversion)
172 AC_DEFUN([ACX_PKGVERSION],[
173 AC_ARG_WITH(pkgversion,
174 AS_HELP_STRING([--with-pkgversion=PKG],
175 [Use PKG in the version string in place of "$1"]),
177 yes) AC_MSG_ERROR([package version not specified]) ;;
179 *) PKGVERSION="($withval) " ;;
183 PKGVERSION_TEXI=`echo "$PKGVERSION" | sed 's/@/@@/g'`
185 AC_SUBST(PKGVERSION_TEXI)
188 dnl Support the --with-bugurl configure option.
189 dnl ACX_BUGURL(default-bugurl)
190 AC_DEFUN([ACX_BUGURL],[
192 AS_HELP_STRING([--with-bugurl=URL],
193 [Direct users to URL to report a bug]),
195 yes) AC_MSG_ERROR([bug URL not specified]) ;;
209 REPORT_BUGS_TO="<$BUGURL>"
210 REPORT_BUGS_TEXI=@uref{`echo "$BUGURL" | sed 's/@/@@/g'`}
213 AC_SUBST(REPORT_BUGS_TO)
214 AC_SUBST(REPORT_BUGS_TEXI)
217 dnl Check linker option support.
218 dnl LIBC_LINKER_FEATURE([ld_option], [cc_option], [action-if-true], [action-if-false])
219 AC_DEFUN([LIBC_LINKER_FEATURE],
220 [AC_MSG_CHECKING([for linker that supports $1])
221 libc_linker_feature=no
222 if test x"$gnu_ld" = x"yes"; then
223 libc_linker_check=`$LD -v --help 2>/dev/null | grep "\$1"`
224 if test -n "$libc_linker_check"; then
225 cat > conftest.c <<EOF
226 int _start (void) { return 42; }
228 if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS
229 $2 -nostdlib -nostartfiles
230 -fPIC -shared -o conftest.so conftest.c
231 1>&AS_MESSAGE_LOG_FD])
233 libc_linker_feature=yes
238 if test $libc_linker_feature = yes; then
243 AC_MSG_RESULT($libc_linker_feature)])