libatomic still broken with --disable-dependency-tracking
Stephen Kitt
skitt@debian.org
Sun Nov 27 15:08:00 GMT 2016
Hi,
I stumbled across an issue recently building gcc and libatomic with
--disable-dependency-tracking (in a cross-compiler). It turns out there's an
open bug with a patch by Richard Purdie for that at
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55930 and the patch appears to
work fine, on gcc 6.2.0:
--- gcc-4.8.1.orig/libatomic/Makefile.am 2013-01-14 18:16:23.000000000 +0000
+++ gcc-4.8.1.orig/libatomic/Makefile.am 2013-09-22 10:38:18.904064750 +0000
@@ -100,7 +100,8 @@
IFUNC_DEF = -DIFUNC_ALT=$(PAT_S)
IFUNC_OPT = $(word $(PAT_S),$(IFUNC_OPTIONS))
-M_DEPS = -MT $@ -MD -MP -MF $(DEPDIR)/$(@F).Ppo
+@AMDEP_TRUE@M_DEPS = -MT $@ -MD -MP -MF $(DEPDIR)/$(@F).Ppo
+@AMDEP_FALSE@M_DEPS =
M_SIZE = -DN=$(PAT_N)
M_IFUNC = $(if $(PAT_S),$(IFUNC_DEF) $(IFUNC_OPT))
M_FILE = $(PAT_BASE)_n.c
--- gcc-4.8.1.orig/libatomic/Makefile.in 2013-05-31 09:09:26.000000000 +0000
+++ gcc-4.8.1.orig/libatomic/Makefile.in 2013-09-22 10:40:42.520059917 +0000
@@ -298,7 +298,8 @@
PAT_S = $(word 3,$(PAT_SPLIT))
IFUNC_DEF = -DIFUNC_ALT=$(PAT_S)
IFUNC_OPT = $(word $(PAT_S),$(IFUNC_OPTIONS))
-M_DEPS = -MT $@ -MD -MP -MF $(DEPDIR)/$(@F).Ppo
+@AMDEP_TRUE@M_DEPS = -MT $@ -MD -MP -MF $(DEPDIR)/$(@F).Ppo
+@AMDEP_FALSE@M_DEPS =
M_SIZE = -DN=$(PAT_N)
M_IFUNC = $(if $(PAT_S),$(IFUNC_DEF) $(IFUNC_OPT))
M_FILE = $(PAT_BASE)_n.c
Is the patch suitable for merging?
Thanks,
Stephen
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