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Use newly built crt*.o files to build shared objects [BZ #22362]

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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)/, $(install-lib))):
	New target.
This commit is contained in:
H.J. Lu 2017-11-06 08:29:48 -08:00
parent 4e2dff67be
commit abcb584d0e
6 changed files with 43 additions and 0 deletions
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12
ChangeLog
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@ -1,3 +1,15 @@
2017-11-06 H.J. Lu <hongjiu.lu@intel.com>
[BZ #22362]
* Makerules (make-link-multidir): New.
* config.make.in (multidir): New.
* configure.ac (libc_cv_multidir): New. AC_SUBST.
* configure: Regenerated.
* csu/Makefile [$(multidir) != .](multilib-extra-objs): New.
[$(multidir) != .](extra-objs): Add $(multilib-extra-objs).
[$(multidir) != .]($(addprefix $(objpfx)$(multidir)/, $(install-lib))):
New target.
2017-11-06 Joseph Myers <joseph@codesourcery.com>
[BZ #22402]

9
Makerules
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@ -1079,6 +1079,11 @@ rm -f $@.new
$(SHELL) $(..)scripts/rellns-sh $< $@.new
mv -f $@.new $@
endef
define make-link-multidir
$(patsubst %/,cd %,$(objpfx)); \
$(LN_S) . $(multidir) 2> /dev/null; \
test -L $(multidir)
endef
else
# If we have no symbolic links don't bother with rellns-sh.
define make-link
@ -1086,6 +1091,10 @@ rm -f $@.new
$(LN_S) $< $@.new
mv -f $@.new $@
endef
define make-link-multidir
$(make-target-directory)
ln -f $(objpfx)/$(@F) $@
endef
endif
ifeq (yes,$(build-shared))

1
config.make.in
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@ -21,6 +21,7 @@ includedir = @includedir@
datarootdir = @datarootdir@
localstatedir = @libc_cv_localstatedir@
localedir = @localedir@
multidir= @libc_cv_multidir@
# Should we use and build ldconfig?
use-ldconfig = @use_ldconfig@

6
configure vendored
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@ -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`

5
configure.ac
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@ -1783,6 +1783,11 @@ fi
rm -f conftest.*])
AC_SUBST(libc_cv_pie_default)
# 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`
AC_SUBST(libc_cv_multidir)
AC_SUBST(profile)
AC_SUBST(static_nss)

10
csu/Makefile
View File

@ -77,6 +77,11 @@ crtstuff = crti crtn
install-lib += $(crtstuff:=.o)
extra-objs += $(crtstuff:=.o)
ifneq ($(multidir),.)
multilib-extra-objs = $(addprefix $(multidir)/, $(install-lib))
extra-objs += $(multilib-extra-objs)
endif
extra-objs += abi-note.o init.o
asm-CPPFLAGS += -I$(objpfx).
@ -147,3 +152,8 @@ $(objpfx)abi-tag.h: $(..)abi-tags
done
if test -r $@.new; then mv -f $@.new $@; \
else echo >&2 'This configuration not matched in $<'; exit 1; fi
ifneq ($(multidir),.)
$(addprefix $(objpfx)$(multidir)/, $(install-lib)): $(addprefix $(objpfx), $(install-lib))
$(make-link-multidir)
endif