[profile=$enableval],
[profile=no])
-AC_ARG_ENABLE([oldest-abi],
- AC_HELP_STRING([--enable-oldest-abi=ABI],
- [configure the oldest ABI supported @<:@e.g. 2.2@:>@ @<:@default=glibc default@:>@]),
- [oldest_abi=$enableval],
- [oldest_abi=no])
-if test "$oldest_abi" = yes || test "$oldest_abi" = no; then
- oldest_abi=default
-else
- AC_DEFINE_UNQUOTED(GLIBC_OLDEST_ABI, "$oldest_abi")
-fi
-AC_SUBST(oldest_abi)
-
AC_ARG_ENABLE([hardcoded-path-in-tests],
AC_HELP_STRING([--enable-hardcoded-path-in-tests],
[hardcode newly built glibc path in tests @<:@default=no@:>@]),
[])
AC_SUBST(all_warnings)
+AC_ARG_ENABLE([werror],
+ AC_HELP_STRING([--disable-werror],
+ [do not build with -Werror]),
+ [enable_werror=$enableval],
+ [enable_werror=yes])
+AC_SUBST(enable_werror)
+
AC_ARG_ENABLE([multi-arch],
AC_HELP_STRING([--enable-multi-arch],
[enable single DSO with optimizations for multiple architectures]),
AC_DEFINE(HAVE_PT_CHOWN)
fi
-# The way shlib-versions is used to generate soversions.mk uses a
-# fairly simplistic model for name recognition that can't distinguish
-# i486-pc-linux-gnu fully from i486-pc-gnu. So we mutate a $host_os
-# of `gnu*' here to be `gnu-gnu*' just so that shlib-versions can
-# tell. This doesn't get used much beyond that, so it's fairly safe.
-case "$host_os" in
-linux*)
- ;;
-gnu*)
- host_os=`echo $host_os | sed -e 's/gnu/gnu-gnu/'`
- ;;
-esac
-
# We keep the original values in `$config_*' and never modify them, so we
# can write them unchanged into config.make. Everything else uses
# $machine, $vendor, and $os, and changes them whenever convenient.
LIBC_PROG_BINUTILS
-# Accept binutils 2.20 or newer.
+# Accept binutils 2.22 or newer.
AC_CHECK_PROG_VER(AS, $AS, --version,
[GNU assembler.* \([0-9]*\.[0-9.]*\)],
- [2.1[0-9][0-9]*|2.[2-9][0-9]*|[3-9].*|[1-9][0-9]*], AS=: critic_missing="$critic_missing as")
+ [2.1[0-9][0-9]*|2.2[2-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*],
+ AS=: critic_missing="$critic_missing as")
AC_CHECK_PROG_VER(LD, $LD, --version,
[GNU ld.* \([0-9][0-9]*\.[0-9.]*\)],
- [2.1[0-9][0-9]*|2.[2-9][0-9]*|[3-9].*|[1-9][0-9]*], LD=: critic_missing="$critic_missing ld")
+ [2.1[0-9][0-9]*|2.2[2-9]*|2.[3-9][0-9]*|[3-9].*|[1-9][0-9]*],
+ LD=: critic_missing="$critic_missing ld")
# These programs are version sensitive.
AC_CHECK_TOOL_PREFIX
-AC_CHECK_PROG_VER(CC, ${ac_tool_prefix}gcc ${ac_tool_prefix}cc, -v,
- [version \([egcygnustpi-]*[0-9.]*\)], [4.[4-9].* | 4.[1-9][0-9].* | [5-9].* ],
- critic_missing="$critic_missing gcc")
AC_CHECK_PROG_VER(MAKE, gnumake gmake make, --version,
[GNU Make[^0-9]*\([0-9][0-9.]*\)],
[3.79* | 3.[89]* | [4-9].* | [1-9][0-9]*], critic_missing="$critic_missing make")
MSGFMT=: aux_missing="$aux_missing msgfmt")
AC_CHECK_PROG_VER(MAKEINFO, makeinfo, --version,
[GNU texinfo.* \([0-9][0-9.]*\)],
- [4.[5-9]*|4.[1-9][0-9]*|[5-9].*],
+ [4.[7-9]*|4.[1-9][0-9]*|[5-9].*],
MAKEINFO=: aux_missing="$aux_missing makeinfo")
AC_CHECK_PROG_VER(SED, sed, --version,
[GNU sed[^0-9]* \([0-9]*\.[0-9.]*\)],
[GNU Awk[^0-9]*\([0-9][0-9.]*\)],
[3.1.[2-9]*|3.[2-9]*|[4-9]*], critic_missing="$critic_missing gawk")
+AC_CACHE_CHECK([if $CC is sufficient to build libc], libc_cv_compiler_ok, [
+AC_TRY_COMPILE([], [
+#if !defined __GNUC__ || __GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)
+#error insufficient compiler
+#endif],
+ [libc_cv_compiler_ok=yes],
+ [libc_cv_compiler_ok=no])])
+AS_IF([test $libc_cv_compiler_ok != yes],
+ [critic_missing="$critic_missing compiler"])
+
AC_CHECK_TOOL(NM, nm, false)
if test "x$maintainer" = "xyes"; then
fi
AC_PATH_PROG(INSTALL_INFO, install-info, no,
$PATH:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin)
-AC_PATH_PROG(BISON, bison, no, $PATH:/usr/local/bin:/usr/bin:/bin)
+AC_CHECK_PROG_VER(BISON, bison, --version,
+ [bison (GNU Bison) \([0-9]*\.[0-9.]*\)],
+ [2.7*|[3-9].*|[1-9][0-9]*],
+ BISON=no)
AC_CACHE_CHECK(for libc-friendly stddef.h, libc_cv_friendly_stddef, [dnl
AC_TRY_COMPILE(dnl
fi
libc_extra_cppflags=
-AC_CACHE_CHECK([whether the linker provides __ehdr_start],
+# Some linkers on some architectures support __ehdr_start but with
+# bugs. Make sure usage of it does not create relocations in the
+# output (as the linker should resolve them all for us).
+AC_CACHE_CHECK([whether the linker provides working __ehdr_start],
libc_cv_ehdr_start, [
old_CFLAGS="$CFLAGS"
old_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -nostdlib -nostartfiles -shared"
LIBS=
AC_LINK_IFELSE([AC_LANG_SOURCE([
-extern const char __ehdr_start __attribute__ ((visibility ("hidden")));
-const char *ehdr (void) { return &__ehdr_start; }
+typedef struct {
+ char foo;
+ long val;
+} Ehdr;
+extern const Ehdr __ehdr_start __attribute__ ((visibility ("hidden")));
+long ehdr (void) { return __ehdr_start.val; }
])],
- [libc_cv_ehdr_start=yes], [libc_cv_ehdr_start=no])
+ [if $READELF -r conftest | fgrep __ehdr_start >/dev/null; then
+ libc_cv_ehdr_start=broken
+ else
+ libc_cv_ehdr_start=yes
+ fi], [libc_cv_ehdr_start=no])
CFLAGS="$old_CFLAGS"
LDFLAGS="$old_LDFLAGS"
LIBS="$old_LIBS"
])
-if test $libc_cv_ehdr_start = yes; then
+if test "$libc_cv_ehdr_start" = yes; then
AC_DEFINE([HAVE_EHDR_START])
+elif test "$libc_cv_ehdr_start" = broken; then
+ AC_MSG_WARN([linker is broken -- you should upgrade])
+fi
+
+AC_CACHE_CHECK(for __builtin_trap with no external dependencies,
+ libc_cv_builtin_trap, [dnl
+libc_cv_builtin_trap=no
+AC_TRY_COMPILE([], [__builtin_trap ()], [
+libc_undefs=`$NM -u conftest.o |
+ LC_ALL=C $AWK '$1 == "U" { print $2 | "sort -u"; next } { exit(1) }' \
+ 2>&AS_MESSAGE_LOG_FD` || {
+ AC_MSG_ERROR([confusing output from $NM -u])
+}
+echo >&AS_MESSAGE_LOG_FD "libc_undefs='$libc_undefs'"
+if test -z "$libc_undefs"; then
+ libc_cv_builtin_trap=yes
+fi])])
+if test $libc_cv_builtin_trap = yes; then
+ AC_DEFINE([HAVE_BUILTIN_TRAP])
fi
### End of automated tests.
projects / platform / upstream / glibc.git / blobdiff