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[WebAssembly] Allow weak symbols when build libc.a for wasm

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This commit is contained in:
Sam Clegg
2017-10-25 16:47:06 -07:00
parent 319abd03d4
commit f7a3ac80ec
1 changed files with 9 additions and 4 deletions
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13
libc.py
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@ -32,8 +32,11 @@ BLACKLIST = [
'puts.c', # Prefer the JS version for now 'puts.c', # Prefer the JS version for now
'abort.c', # Perfer the JS version for now 'abort.c', # Perfer the JS version for now
'_Exit.c', # Perfer the JS version for now '_Exit.c', # Perfer the JS version for now
'exit.c', # Contains a weak reference which is not suppoered by s2wasm ]
'__libc_start_main.c', # Contains a weak reference which is not suppoered by s2wasm # Files that contain weak reference which are not suppoered by s2wasm
WEAK_BLACKLIST = [
'exit.c',
'__libc_start_main.c',
] ]
CFLAGS = ['-std=c99', CFLAGS = ['-std=c99',
'-D_XOPEN_SOURCE=700', '-D_XOPEN_SOURCE=700',
@ -84,7 +87,7 @@ def build_alltypes(musl, arch):
o.write(out) o.write(out)
def musl_sources(musl_root): def musl_sources(musl_root, include_weak):
"""musl sources to be built.""" """musl sources to be built."""
sources = [] sources = []
for d in os.listdir(os.path.join(musl_root, 'src')): for d in os.listdir(os.path.join(musl_root, 'src')):
@ -95,6 +98,8 @@ def musl_sources(musl_root):
for f in glob.glob(pattern): for f in glob.glob(pattern):
if os.path.basename(f) in BLACKLIST: if os.path.basename(f) in BLACKLIST:
continue continue
if not include_weak and os.path.basename(f) in WEAK_BLACKLIST:
continue
sources.append(f) sources.append(f)
return sorted(sources) return sorted(sources)
@ -197,7 +202,7 @@ def run(clang_dir, binaryen_dir, sexpr_wasm, musl, arch, out, save_temps,
try: try:
create_version(musl) create_version(musl)
build_alltypes(musl, arch) build_alltypes(musl, arch)
sources = musl_sources(musl) sources = musl_sources(musl, include_weak=compile_to_wasm)
if compile_to_wasm: if compile_to_wasm:
compiler = ObjCompiler(out, clang_dir, musl, arch, tmpdir) compiler = ObjCompiler(out, clang_dir, musl, arch, tmpdir)
else: else: