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| author | Dylan Alex Simon <dylan-sourceware@dylex.net> | 2016-03-15 13:20:01 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2016-03-21 02:07:51 -0400 |
| commit | f9378ac3773ffe998a2b3406568778ee9f77f759 (patch) | |
| tree | 4c4ef1c7a1e7f94c6601cada058180c276dd05ca | |
| parent | 6bc81cf205a1f4c14d5ac8e664cf1126a5d2acab (diff) | |
| download | glibc-f9378ac3773ffe998a2b3406568778ee9f77f759.tar.gz glibc-f9378ac3773ffe998a2b3406568778ee9f77f759.tar.xz glibc-f9378ac3773ffe998a2b3406568778ee9f77f759.zip | |
math: don't clobber old libm.so on install [BZ #19822]
When installing glibc (w/mathvec enabled) in-place on a system with a glibc w/out mathvec enabled, the install will clobber the existing libm.so (e.g., /lib64/libm-2.21.so) with a linker script. This is because libm.so is a symlink to libm.so.6 which is a symlink to the final libm-2.21.so file. When the makefile writes the linker script directly to libm.so, it gets clobbered. The simple patch below to math/Makefile fixes this. It is based on the nptl Makefile, which does exactly the same thing in a safer way.
| -rw-r--r-- | ChangeLog | 6 | ||||
| -rw-r--r-- | math/Makefile | 3 |
2 files changed, 8 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog index 6bd5a11769..17c9dc054c 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,9 @@ +2016-03-21 Dylan Alex Simon <dylan-sourceware@dylex.net> + + [BZ #19822] + * math/Makefile ($(inst_libdir)/libm.so): Write output to $@.tmp and + move it to the final $@ location. + 2016-03-20 Adhemerval Zanella <adhemerval.zanella@linaro.org> * sysdeps/unix/sysv/linux/spawni.c (__spawnix): Fix invalid memory diff --git a/math/Makefile b/math/Makefile index b952124999..d440833f4d 100644 --- a/math/Makefile +++ b/math/Makefile @@ -100,7 +100,8 @@ $(inst_libdir)/libm.so: $(common-objpfx)format.lds \ cat $<; \ echo 'GROUP ( $(slibdir)/libm.so$(libm.so-version) ' \ 'AS_NEEDED ( $(libdir)/libmvec_nonshared.a $(slibdir)/libmvec.so$(libmvec.so-version) ) )' \ - ) > $@ + ) > $@.new + mv -f $@.new $@ endif # Rules for the test suite. |