glibc-2.1.3-override.patch

linux下编译交叉工具链的工具源码

The error

make[2]: *** [.../gcc-3.3.3-glibc-2.1.3/i686-unknown-linux-gnu/share/zoneinfo/Africa/Algiers] Segmentation fault
make[2]: Leaving directory `.../gcc-3.3.3-glibc-2.1.3/glibc-2.1.3/timezone'
make[1]: *** [timezone/subdir_install] Error 2

is caused by glibc trying to run something it just compiled.
A crude workaround for this was posted at
http://lists.scratchbox.org/pipermail/scratchbox-users/2004-February/000018.html
but the following patch lets you optionally override these programs at
make time by setting environment variables 
  localedef_FOR_BUILD rpcgen_FOR_BUILD zic_FOR_BUILD
and maybe a few others to point to versions of those programs
that can run on the build machine.
Thanks to http://groups.google.com/groups?selm=9012160052.AA23106%40kaos.ksr.com
for pointing out the idiom for inline $(ifdef ...) in GNU Make.

Dan Kegel 2004-05-17

--- glibc-2.1.3/Makeconfig.old	1999-11-29 11:19:20.000000000 -0800
+++ glibc-2.1.3/Makeconfig	2004-05-17 15:57:53.000000000 -0700
@@ -470,20 +470,24 @@
 # The program binary is assumed to be $(word 2,$^).
 built-program-file = $(dir $(word 2,$^))$(notdir $(word 2,$^))
 ifneq (yes,$(build-shared))
-built-program-cmd = $(built-program-file)
+built-program-real = $(built-program-file)
 else
 comma = ,
 sysdep-library-path = \
 $(subst $(empty) ,:,$(strip $(patsubst -Wl$(comma)-rpath-link=%, %,\
 				       $(filter -Wl$(comma)-rpath-link=%,\
 						$(sysdep-LDFLAGS)))))
-define built-program-cmd
+define built-program-real
 $(elf-objpfx)$(rtld-installed-name) \
 	--library-path $(rpath-link)$(patsubst %,:%,$(sysdep-library-path)) \
 	$(built-program-file)
 endef
 endif
 
+# If user set foo_FOR_BUILD, use that instead of actually running the program we just linked.
+built-program-override-name = $(notdir $(word 2,$^))_FOR_BUILD
+built-program-cmd = $(if $(findstring undefined,$(origin $(built-program-override-name))),$(built-program-real),$($(built-program-override-name)))
+
 ifndef LD
 LD := ld -X
 endif