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authorJoel Sherrill <joel.sherrill@OARcorp.com>1998-10-14 19:42:45 +0000
committerJoel Sherrill <joel.sherrill@OARcorp.com>1998-10-14 19:42:45 +0000
commit946b3cb0cf91da6753b6a6e0f60b91d84fcdf097 (patch)
treec67fa01270f5c4db355ab291330c795f4962d8e0 /make/compilers
parentcb160321feb5df88ba478f13f527619908e037c5 (diff)
downloadrtems-946b3cb0cf91da6753b6a6e0f60b91d84fcdf097.tar.bz2
Patch from Ralf Corsepius <corsepiu@faw.uni-ulm.de>:
2. "make profile" doesn't work. It aborts when building host-tools for embedded targets. I didn't yet have enough time to fix this problem. AFAIS this problem is related to handling of LDFLAGS_PROFILE[|_V] in gcc.cfg.in. For host applications, we use gcc for linking host applications, too. With profiling enabled CFLAGS_PROFILE_V contains -pg and is used to compile, but LDFLAGS_PROFILE_V is empty, hence -pg will not be passed to the linker causing gcc to fail to link, because it can't resolve some symbols introduced by compiling with -pg. I am not sure if I can provide a patch for this - Ether it is trivial to fix or requires basic work on host configuration ;- Fixing this one was trivial - But hard to trace. LDFLAGS_PROFILE_V needs to contain the same flags as CFLAGS_PROFILE_V, if gcc is used for linking (What else should have been expected ?, :-). The same problem was present for *_DEBUG_V, but apparently wasn't noticed by anybody, because things didn't break, but were silently ignored. I fixed these problems by setting these flags in configure.in whenever gcc is reported to be the host-compiler. For non-gcc host compilers "make debug" and "make profile" now becomes the same as an ordinary "make". This is a hack and addressing this problen could be more sophisticated, but I don't think it gives much sense to support compile variants for any host program (Who will ever try to profile/debug host tools?). Therefore I don't think it's useful to invest more effort into this problem.
Diffstat (limited to 'make/compilers')
-rw-r--r--make/compilers/gcc.cfg.in4
1 files changed, 2 insertions, 2 deletions
diff --git a/make/compilers/gcc.cfg.in b/make/compilers/gcc.cfg.in
index df4c11cb8c..590bacc213 100644
--- a/make/compilers/gcc.cfg.in
+++ b/make/compilers/gcc.cfg.in
@@ -54,7 +54,7 @@ CFLAGS_DEBUG_V=@CC_CFLAGS_DEBUG_V@
CFLAGS_DEBUG_OPTIMIZE_V=
# profile flag; use gprof(1)
-CFLAGS_PROFILE_V=-pg
+CFLAGS_PROFILE_V=@CC_CFLAGS_PROFILE_V@
# default is to optimize
CFLAGS_OPTIMIZE=$(CFLAGS_OPTIMIZE_V)
@@ -91,7 +91,7 @@ LDFLAGS_DYNAMIC_V = ??
LDFLAGS_DYNAMIC_LIBNAME_V = -h $(DYNAMIC_VERSION_LIBNAME)
# ld flags for profiling, debugging
-LDFLAGS_PROFILE_V =
+LDFLAGS_PROFILE_V = @CC_LDFLAGS_PROFILE_V@
LDFLAGS_DEBUG_V =
LDFLAGS=$(LDFLAGS_PROFILE) $(LDFLAGS_DEBUG) $(LD_PATHS:%=-L %)