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authorH.J. Lu <hjl.tools@gmail.com>2017-11-06 08:29:48 -0800
committerH.J. Lu <hjl.tools@gmail.com>2017-11-06 08:29:57 -0800
commitabcb584d0eae7270b35e1b3fed1f9661e26b8be0 (patch)
tree135e0a2bd7688a052a8bc3b1ddc9cbce570d3873 /configure
parent4e2dff67beeb063cb36fe100d9d2b3f2f88d80c6 (diff)
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Use newly built crt*.o files to build shared objects [BZ #22362]
When multi-lib GCC is used to build glibc, the search order of GCC driver
for crt*.o is -B*/`gcc -print-multi-directory`, the installed diretory,
-B*/.  This patch adds multi-lib support to csu/Makefile so that
-B/glibc-build-directory/csu/ will pick up the newly built crt*.o.

Tested on x86-64 for i686 and x32.

	[BZ #22362]
	* Makerules (make-link-multidir): New.
	* config.make.in (multidir): New.
	* configure.ac (libc_cv_multidir): New.  AC_SUBST.
	* configure: Regenerated.
	* csu/Makefile [$(multidir) != .](multilib-extra-objs): New.
	[$(multidir) != .](extra-objs): Add $(multilib-extra-objs).
	[$(multidir) != .]($(addprefix $(objpfx)$(multidir)/, $(install-lib))):
	New target.
Diffstat (limited to 'configure')
-rwxr-xr-xconfigure6
1 files changed, 6 insertions, 0 deletions
diff --git a/configure b/configure
index 6010977c58..c8697d9b1a 100755
--- a/configure
+++ b/configure
@@ -594,6 +594,7 @@ mach_interface_list
 DEFINES
 static_nss
 profile
+libc_cv_multidir
 libc_cv_pie_default
 libc_cv_pic_default
 shared
@@ -6698,6 +6699,11 @@ fi
 $as_echo "$libc_cv_pie_default" >&6; }
 
 
+# Set the `multidir' variable by grabbing the variable from the compiler.
+# We do it once and save the result in a generated makefile.
+libc_cv_multidir=`${CC-cc} $CFLAGS $CPPFLAGS -print-multi-directory`
+
+