tunables: report sbrk() failure

[thirdparty/glibc.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index ad50e290d45178c2c7ce695db016122751ad30ad..49b900c1ed68fa4dd1dadca809ceb6e8b237a89c 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,12 +1,13 @@
 dnl Process this file with autoconf to produce a configure script.
 dnl Note we do not use AC_PREREQ here!  See aclocal.m4 for what we use instead.
-AC_INIT([GNU C Library], [(see version.h)], [https://sourceware.org/bugzilla/], [glibc])
+AC_INIT([GNU C Library], [(see version.h)], [https://sourceware.org/bugzilla/],
+  [glibc], [https://www.gnu.org/software/glibc/])
 AC_CONFIG_SRCDIR([include/features.h])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_AUX_DIR([scripts])
 
 ACX_PKGVERSION([GNU libc])
-ACX_BUGURL([http://www.gnu.org/software/libc/bugs.html])
+ACX_BUGURL([https://www.gnu.org/software/libc/bugs.html])
 AC_DEFINE_UNQUOTED([PKGVERSION], ["$PKGVERSION"],
                   [Package description])
 AC_DEFINE_UNQUOTED([REPORT_BUGS_TO], ["$REPORT_BUGS_TO"],
@@ -472,11 +473,18 @@ AC_ARG_ENABLE([mathvec],
              [build_mathvec=$enableval],
              [build_mathvec=notset])
 
+AC_TRY_COMPILE([], [
+#ifndef __CET__
+# error no CET compiler support
+#endif],
+              [libc_cv_compiler_default_cet=yes],
+              [libc_cv_compiler_default_cet=no])
+
 AC_ARG_ENABLE([cet],
              AC_HELP_STRING([--enable-cet],
                             [enable Intel Control-flow Enforcement Technology (CET), x86 only]),
              [enable_cet=$enableval],
-             [enable_cet=no])
+             [enable_cet=$libc_cv_compiler_default_cet])
 
 # We keep the original values in `$config_*' and never modify them, so we
 # can write them unchanged into config.make.  Everything else uses
@@ -1804,6 +1812,7 @@ AC_SUBST(libc_cv_gcc_unwind_find_fde)
 if test x"$libc_cv_ld_gnu_indirect_function" = xyes; then
   AC_DEFINE(HAVE_IFUNC)
 fi
+LIBC_CONFIG_VAR([have-ifunc], [$libc_cv_ld_gnu_indirect_function])
 
 if test x"$libc_cv_gcc_indirect_function" = xyes; then
   AC_DEFINE(HAVE_GCC_IFUNC)