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build: ensure compiler flags are properly detected

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While checking for compiler flag availability, treat warnings
as errors. Thus if the compiler only warns about unsupported flag,
it will fail the test and the flag shall be marked as unsupported.

Signed-off-by: Uri Simchoni <uri@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

Autobuild-User(master): Andrew Bartlett <abartlet@samba.org>
Autobuild-Date(master): Wed Nov 22 14:19:20 CET 2017 on sn-devel-144
This commit is contained in:
Uri Simchoni 2017-11-20 20:53:12 +00:00 committed by Andrew Bartlett
parent 2e53d6a30f
commit 667335a42d
1 changed files with 4 additions and 1 deletions
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5
buildtools/wafsamba/samba_autoconf.py
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@ -473,10 +473,13 @@ def CHECK_STRUCTURE_MEMBER(conf, structname, member,
def CHECK_CFLAGS(conf, cflags, fragment='int main(void) { return 0; }\n'):
'''check if the given cflags are accepted by the compiler
'''
check_cflags = TO_LIST(cflags)
if 'WERROR_CFLAGS' in conf.env:
check_cflags.extend(conf.env['WERROR_CFLAGS'])
return conf.check(fragment=fragment,
execute=0,
type='nolink',
ccflags=cflags,
ccflags=check_cflags,
msg="Checking compiler accepts %s" % cflags)
@conf