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authorH.J. Lu <hjl.tools@gmail.com>2012-01-27 23:23:37 +0000
committerH.J. Lu <hjl.tools@gmail.com>2012-01-27 23:23:37 +0000
commit24482ca0577ae94fdfa6523d4a5942fc3a610d47 (patch)
tree9ed331669e50e1e776d9d1ff5627fc93b1c1b442 /gold
parent690834b28c79871fe960ccd34838e82a700ee003 (diff)
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Check if -mcmodel=medium works
2012-01-27 H.J. Lu <hongjiu.lu@intel.com> * configure.ac: Check if -mcmodel=medium works. * configure: Regenerated.
Diffstat (limited to 'gold')
-rw-r--r--gold/ChangeLog5
-rwxr-xr-xgold/configure15
-rw-r--r--gold/configure.ac6
3 files changed, 24 insertions, 2 deletions
diff --git a/gold/ChangeLog b/gold/ChangeLog
index 8ff8048..8ed05f5 100644
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,8 @@
+2012-01-27 H.J. Lu <hongjiu.lu@intel.com>
+
+ * configure.ac: Check if -mcmodel=medium works.
+ * configure: Regenerated.
+
2012-01-24 Cary Coutant <ccoutant@google.com>
* int_encoding.cc (read_unsigned_LEB_128): Replaced with inline
diff --git a/gold/configure b/gold/configure
index 3dddec6..aca7cab 100755
--- a/gold/configure
+++ b/gold/configure
@@ -6312,7 +6312,20 @@ fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $gold_cv_prog_gcc41" >&5
$as_echo "$gold_cv_prog_gcc41" >&6; }
- if test "$target_cpu" = "x86_64" -a "$gold_cv_prog_gcc41" = "yes"; then
+save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -mcmodel=medium"
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+int i;
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ have_mcmodel_medium=yes
+else
+ have_mcmodel_medium=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+CFLAGS="$save_CFLAGS"
+ if test "$target_cpu" = "x86_64" -a "$have_mcmodel_medium" = "yes" -a "$gold_cv_prog_gcc41" = "yes"; then
MCMODEL_MEDIUM_TRUE=
MCMODEL_MEDIUM_FALSE='#'
else
diff --git a/gold/configure.ac b/gold/configure.ac
index 1b46f4a..e49bf21 100644
--- a/gold/configure.ac
+++ b/gold/configure.ac
@@ -312,9 +312,13 @@ error
#endif
], [gold_cv_prog_gcc41=yes], [gold_cv_prog_gcc41=no])])
+save_CFLAGS="$CFLAGS"
+CFLAGS="$CFLAGS -mcmodel=medium"
+AC_COMPILE_IFELSE([int i;], [have_mcmodel_medium=yes], [have_mcmodel_medium=no])
+CFLAGS="$save_CFLAGS"
dnl Whether we can test -mcmodel=medium.
AM_CONDITIONAL(MCMODEL_MEDIUM,
-[test "$target_cpu" = "x86_64" -a "$gold_cv_prog_gcc41" = "yes"])
+[test "$target_cpu" = "x86_64" -a "$have_mcmodel_medium" = "yes" -a "$gold_cv_prog_gcc41" = "yes"])
dnl Test for __thread support.
AC_CACHE_CHECK([for thread support], [gold_cv_c_thread],