On 2010-11-19 16:51, Erik Cederstrand wrote:
Poking around, I decided to add this patch:
# svn diff lib/clang/clang.build.mk
Index: lib/clang/clang.build.mk
===================================================================
--- lib/clang/clang.build.mk (revision 215422)
+++ lib/clang/clang.build.mk (working copy)
@@ -28,6 +28,13 @@
CXXFLAGS+=-fno-rtti
.endif
+.ifdef WITH_DETERMINISTIC
+CXXFLAGS+=-frandom-seed=0
+.endif
This will probably not work as expected. The -frandom-seed option must
be different for each source file.
and added "WITH_DETERMINISTIC=true" to /etc/src.conf. The "random-seed=0"
should ensure that the same random elements are generated every time.
I then ran two buildworlds with the same MAKEOBJDIRPREFIX but two different
DESTDIRs, and compared the two clang binaries. The random-seed option does show
up un the log, so it's getting picked up, but apparently it was not enough, as
the random elements are still different.
Any hints on where in the build infrastructure I should add the flag, or what
to grep for in the buildworld log to find out what's wrong?
Also, how can I compile just clang? I tried "cd src/usr.bin/clang; make" but it
dies violently:
/usr/home/erik/freebsd/head/src/usr.bin/clang/clang/../../../contrib/llvm/tools/clang/include/clang/Basic/Diagnostic.h:
At global scope:
/usr/home/erik/freebsd/head/src/usr.bin/clang/clang/../../../contrib/llvm/tools/clang/include/clang/Basic/Diagnostic.h:999:
error: expected ',' or '...' before '&' token
/usr/home/erik/freebsd/head/src/usr.bin/clang/clang/../../../contrib/llvm/tools/clang/include/clang/Basic/Diagnostic.h:1000:
error: ISO C++ forbids declaration of 'LangOptions' with no type
/usr/home/erik/freebsd/head/src/usr.bin/clang/clang/../../../contrib/llvm/tools/clang/include/clang/Basic/Diagnostic.h:1019:
error: expected declaration before '}' token
I don't see this error if I repeat your commands, but in any case you
must first build in lib/clang, before you can build in usr.bin/clang,
e.g.:
make -C $SRCDIR/lib/clang && make -C $SRCDIR/usr.bin/clang
_______________________________________________
freebsd-toolchain@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-toolchain
To unsubscribe, send any mail to "freebsd-toolchain-unsubscr...@freebsd.org"
