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Fix predefined macros check after recent clang change

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This is an alternative to #75.
This commit is contained in:
Sam Clegg 2019-07-12 02:21:15 -07:00 committed by Dan Gohman
parent a413650013
commit 8df0d4cd6a
1 changed files with 6 additions and 0 deletions
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6
Makefile
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@ -467,9 +467,15 @@ finish: startup_files libc
# which we don't need to track here. For the __*_ATOMIC_*_LOCK_FREE
# macros, squash individual compiler names to attempt, toward keeping
# these files compiler-independent.
#
# We have to add `-isystem $(SYSROOT_INC)` because otherwise clang puts
# its builtin include path first, which produces compiler-specific
# output.
#
# TODO: Undefine __FLOAT128__ for now since it's not in clang 8.0.
# TODO: Filter out __FLT16_* for now, as not all versions of clang have these.
"$(WASM_CC)" $(WASM_CFLAGS) "$(SYSROOT_SHARE)/include-all.c" \
-isystem $(SYSROOT_INC) \
-E -dM -Wno-\#warnings \
-D_ALL_SOURCE \
-U__llvm__ \