+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. When changing this version,
+dnl install.texi also needs to be updated.
+m4_define([GLIBC_AUTOCONF_VERSION], [2.71])
+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 which appears in configure.ac before the sysdep configure scripts are run.
+dnl Each sysdep configure.ac does GLIBC_PROVIDES first, to avoid any
dnl AC_REQUIREs or AC_BEFOREs duplicating their code.
dnl
define([GLIBC_PROVIDES], [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
+AC_PROVIDE([AS_SHELL_FN_ac_fn_c_try_cpp])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. DO NOT EDIT!
+# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
define([_AC_LANG], [C])dnl
])dnl
dnl
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=`$CC -print-prog-name=ar`
+case "$CC" in
+ *fuse-ld=lld*) LDNAME=ld.lld;;
+ *) LDNAME=ld;;
+esac
+if test -z "$LD"; then
+ LD=`$CC -print-prog-name=$LDNAME`
+fi
+if test -z "$AR"; then
+ AR=`$CC -print-prog-name=ar`
+fi
AC_SUBST(AR)
-OBJDUMP=`$CC -print-prog-name=objdump`
-AC_SUBST(OBJDUMP)
-OBJCOPY=`$CC -print-prog-name=objcopy`
+if test -z "$OBJCOPY"; then
+ OBJCOPY=`$CC -print-prog-name=objcopy`
+fi
AC_SUBST(OBJCOPY)
-
-# 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=$libc_cv_prog_ld_gnu
+if test -z "$GPROF"; then
+ GPROF=`$CC -print-prog-name=gprof`
+fi
+AC_SUBST(GPROF)
+if test -z "$READELF"; then
+ READELF=`$CC -print-prog-name=readelf`
+fi
+AC_SUBST(READELF)
+if test -z "$OBJDUMP"; then
+ OBJDUMP=`$CC -print-prog-name=objdump`
+fi
+AC_SUBST(OBJDUMP)
+if test -z "$NM"; then
+ NM=`$CC -print-prog-name=nm`
+fi
+AC_SUBST(NM)
])
dnl Run a static link test with -nostdlib -nostartfiles.
int __start (void) { return 0; }
$1
EOF
-AS_IF([AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -o conftest
+AS_IF([AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp -o conftest
conftest.c -static -nostartfiles -nostdlib
1>&AS_MESSAGE_LOG_FD])],
[$2], [$3])
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 $1])
+libc_linker_feature=no
+cat > conftest.c <<EOF
+int _start (void) { return 42; }
+EOF
+if AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
+ $2 -nostdlib -nostartfiles
+ -fPIC -shared -o conftest.so conftest.c
+ 1>&AS_MESSAGE_LOG_FD])
+then
+ if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp $2 -nostdlib \
+ -nostartfiles -fPIC -shared -o conftest.so conftest.c 2>&1 \
+ | grep "warning: $1 ignored" > /dev/null 2>&1; then
+ true
+ else
+ libc_linker_feature=yes
+ fi
+fi
+rm -f conftest*
+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) { $2 return 0; }
+EOF
+if ! AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS $no_ssp
+ $3 -nostdlib -nostartfiles
+ -S conftest.c -o - | grep -F "$1"
+ 1>&AS_MESSAGE_LOG_FD])
+then
+ libc_compiler_builtin_inlined=yes
+fi
+rm -f conftest*
+if test $libc_compiler_builtin_inlined = yes; then
+ $4
+else
+ $5
+fi
+AC_MSG_RESULT($libc_compiler_builtin_inlined)])
+
+dnl Default to slibdir named SLIBDIR instead of "lib", and rtlddir
+dnl named RTLDDIR instead of "lib". This is used to put 64-bit
+dnl libraries in /lib64.
+dnl LIBC_SLIBDIR_RTLDDIR([slibdir], [rtlddir])
+AC_DEFUN([LIBC_SLIBDIR_RTLDDIR],
+[test -n "$libc_cv_slibdir" ||
+case "$prefix" in
+/usr | /usr/)
+ libc_cv_slibdir='/$1'
+ libc_cv_rtlddir='/$2'
+ if test "$libdir" = '${exec_prefix}/lib'; then
+ libdir='${exec_prefix}/$1';
+ # Locale data can be shared between 32-bit and 64-bit libraries.
+ libc_cv_complocaledir='${exec_prefix}/lib/locale'
+ fi
+ ;;
+esac])
projects / thirdparty / glibc.git / blobdiff