dnl We require that everyone use exactly the same Autoconf version so that dnl the internal functions defined and used by the main configure script dnl match those expected by the fragments. m4_define([GLIBC_AUTOCONF_VERSION], [2.68]) m4_if(m4_defn([AC_AUTOCONF_VERSION]), GLIBC_AUTOCONF_VERSION, [], [m4_fatal(m4_flatten( Exactly version GLIBC_AUTOCONF_VERSION of Autoconf is required but you have m4_defn([AC_AUTOCONF_VERSION]) ), [63])])dnl dnl 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([GLIBC_PROVIDES], [dnl AC_PROVIDE([AC_CONFIG_AUX_DIR_DEFAULT])dnl AC_PROVIDE([AC_CONFIG_SUBDIRS])dnl AC_PROVIDE([_AS_ECHO_N_PREPARE])dnl AC_PROVIDE([_AS_ECHO_PREPARE])dnl AC_PROVIDE([_AS_CR_PREPARE])dnl AC_PROVIDE([_AS_TR_SH_PREPARE])dnl AC_PROVIDE([_AS_VAR_ARITH_PREPARE])dnl AC_PROVIDE([AC_PROG_INSTALL])dnl AC_PROVIDE([AC_PROG_CC])dnl AC_PROVIDE([AC_PROG_CPP])dnl AC_PROVIDE([_AS_PATH_SEPARATOR_PREPARE])dnl AC_PROVIDE([_AS_TEST_PREPARE])dnl AC_PROVIDE([_AS_BASENAME_PREPARE])dnl AC_PROVIDE([_AS_ME_PREPARE])dnl AC_PROVIDE([_AS_LINENO_PREPARE])dnl AC_PROVIDE([AS_SHELL_FN_as_fn_set_status])dnl AC_PROVIDE([AS_SHELL_FN_as_fn_exit])dnl AC_PROVIDE([AS_SHELL_FN_as_fn_arith])dnl AC_PROVIDE([AS_SHELL_FN_ac_fn_c_try_compile])dnl define([AS_MESSAGE_LOG_FD],5)dnl define([AS_MESSAGE_FD],6)dnl dnl Ripped out of AS_INIT, which does more cruft we do not want. m4_wrap([m4_divert_pop([BODY])[]]) m4_divert_push([BODY])[]dnl dnl End of ripped out of AS_INIT. # This file is generated from configure.in by Autoconf. 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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 ]) dnl Run a static link test with -nostdlib -nostartfiles. dnl LIBC_TRY_LINK_STATIC([code], [action-if-true], [action-if-false]) AC_DEFUN([LIBC_TRY_LINK_STATIC], [cat > conftest.c <<EOF int _start (void) { return 0; } int __start (void) { return 0; } $1 EOF AS_IF([AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest conftest.c -static -nostartfiles -nostdlib 1>&AS_MESSAGE_LOG_FD])], [$2], [$3]) rm -f conftest*]) dnl Test a compiler option or options with an empty input file. dnl LIBC_TRY_CC_OPTION([options], [action-if-true], [action-if-false]) AC_DEFUN([LIBC_TRY_CC_OPTION], [AS_IF([AC_TRY_COMMAND([${CC-cc} $1 -xc /dev/null -S -o /dev/null])], [$2], [$3])]) dnl Find and source sysdeps/*/preconfigure. dnl LIBC_PRECONFIGURE([$srcdir], [for]) AC_DEFUN([LIBC_PRECONFIGURE], [dnl if frags=`ls -d $1/sysdeps/*/preconfigure 2> /dev/null` then AC_MSG_CHECKING($2 preconfigure fragments) for frag in $frags; do name=`echo "$frag" | sed 's@/[[^/]]*[$]@@;s@^.*/@@'` echo $ECHO_N "$name $ECHO_C" >&AS_MESSAGE_FD . "$frag" done AC_MSG_RESULT() fi]) # These two macros are taken from GCC's config/acx.m4. dnl Support the --with-pkgversion configure option. dnl ACX_PKGVERSION(default-pkgversion) AC_DEFUN([ACX_PKGVERSION],[ AC_ARG_WITH(pkgversion, AS_HELP_STRING([--with-pkgversion=PKG], [Use PKG in the version string in place of "$1"]), [case "$withval" in yes) AC_MSG_ERROR([package version not specified]) ;; no) PKGVERSION= ;; *) PKGVERSION="($withval) " ;; esac], PKGVERSION="($1) " ) PKGVERSION_TEXI=`echo "$PKGVERSION" | sed 's/@/@@/g'` AC_SUBST(PKGVERSION) AC_SUBST(PKGVERSION_TEXI) ]) dnl Support the --with-bugurl configure option. dnl ACX_BUGURL(default-bugurl) AC_DEFUN([ACX_BUGURL],[ AC_ARG_WITH(bugurl, AS_HELP_STRING([--with-bugurl=URL], [Direct users to URL to report a bug]), [case "$withval" in yes) AC_MSG_ERROR([bug URL not specified]) ;; no) BUGURL= ;; *) BUGURL="$withval" ;; esac], BUGURL="$1" ) case ${BUGURL} in "") REPORT_BUGS_TO= REPORT_BUGS_TEXI= ;; *) REPORT_BUGS_TO="<$BUGURL>" REPORT_BUGS_TEXI=@uref{`echo "$BUGURL" | sed 's/@/@@/g'`} ;; esac; AC_SUBST(REPORT_BUGS_TO) AC_SUBST(REPORT_BUGS_TEXI) ]) dnl Check linker option support. dnl LIBC_LINKER_FEATURE([ld_option], [cc_option], [action-if-true], [action-if-false]) AC_DEFUN([LIBC_LINKER_FEATURE], [AC_MSG_CHECKING([for linker that supports $1]) libc_linker_feature=no if test x"$gnu_ld" = x"yes"; then libc_linker_check=`$LD -v --help 2>/dev/null | grep "\$1"` if test -n "$libc_linker_check"; then cat > conftest.c <<EOF int _start (void) { return 42; } EOF if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $2 -nostdlib -nostartfiles -fPIC -shared -o conftest.so conftest.c 1>&AS_MESSAGE_LOG_FD]) then libc_linker_feature=yes fi rm -f conftest* fi fi if test $libc_linker_feature = yes; then $3 else $4 fi AC_MSG_RESULT($libc_linker_feature)]) dnl Add a makefile variable, with value set from a shell string dnl (expanded by the shell inside double quotes), to config.make. dnl LIBC_CONFIG_VAR(make-variable, shell-value) AC_DEFUN([LIBC_CONFIG_VAR], [config_vars="$config_vars $1 = $2"]) dnl Check that function FUNC was inlined as a builtin. The code fragment dnl CODE is compiled with additional options CC_OPTION. If FUNC is dnl not found in the assembly then it is assumed the compiler has support dnl for this builtin and has inlined the call. If the compiler has the dnl feature then ACTION-IF-TRUE is called, otherwise ACTION-IF-FALSE. dnl It is up to the caller to provide a CC_OPTION that ensures the dnl builtin is inlined if present. dnl Warning: This may not work for some machines. For example on ARM the dnl ABI dictates that some functions should not be inlined and instead dnl should be provided by a compiler helper library e.g. __aeabi_memcpy. dnl This is done to reduce code size. dnl LIBC_COMPILER_BUILTIN([func], [code], [cc_option], [action-if-true], [action-if-false]) AC_DEFUN([LIBC_COMPILER_BUILTIN_INLINED], [AC_MSG_CHECKING([for compiler support of inlined builtin function $1]) libc_compiler_builtin_inlined=no cat > conftest.c <<EOF int _start (void) { $2 return 0; } EOF if ! 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