The clang in base installs several header files in
/usr/lib/clang/3.8.1/include that are interfering somewhat with our
own headers. In particular these headers don't include <sys/cdefs.h>
which leads to issues because our own headers expect that they don't
have to include <sys/cdef.h> themselves because some other standard
header already does this for them.
My proposal is that we stop installing the following header files:
float.h
inttypes.h
iso646.h
limits.h
stdarg.h
stdbool.h
stddef.h
__stddef_max_align_t.h
stdint.h
vadefs.h
Our own header files should be mostly good enough. Just some minor
C11 stuff is missing:
* FLT_TRUE_MIN, DBL_TRUE_MIN, LDBL_TRUE_MIN in float.h
* max_align_t in stddef.h
It should be possible to implement the missing functionality pretty quickly.
The vadefs.h is some Microsoft invention that we don't want.
At some point we should also consider to only install the intrinsics
header files for the target; it doesn't make a lot of sense to install
the SSE intrinsics header files on armv7 for example. But that can be
addressed later.
ok?
Index: gnu/usr.bin/clang/include/clang/intrin/Makefile
===================================================================
RCS file: /cvs/src/gnu/usr.bin/clang/include/clang/intrin/Makefile,v
retrieving revision 1.2
diff -u -p -r1.2 Makefile
--- gnu/usr.bin/clang/include/clang/intrin/Makefile 8 Sep 2016 18:05:30
-0000 1.2
+++ gnu/usr.bin/clang/include/clang/intrin/Makefile 5 Jan 2017 14:34:59
-0000
@@ -29,7 +29,6 @@ HEADERS=adxintrin.h \
cuda_builtin_vars.h \
emmintrin.h \
f16cintrin.h \
- float.h \
fma4intrin.h \
fmaintrin.h \
fxsrintrin.h \
@@ -38,9 +37,6 @@ HEADERS=adxintrin.h \
ia32intrin.h \
immintrin.h \
Intrin.h \
- inttypes.h \
- iso646.h \
- limits.h \
lzcntintrin.h \
mm3dnow.h \
mmintrin.h \
@@ -56,18 +52,12 @@ HEADERS=adxintrin.h \
shaintrin.h \
smmintrin.h \
stdalign.h \
- stdarg.h \
stdatomic.h \
- stdbool.h \
- stddef.h \
- __stddef_max_align_t.h \
- stdint.h \
stdnoreturn.h \
tbmintrin.h \
tgmath.h \
tmmintrin.h \
unwind.h \
- vadefs.h \
varargs.h \
vecintrin.h \
__wmmintrin_aes.h \
