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opal/asm: silence xlc warning about typeof usage #8458

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opal/asm: silence xlc warning about typeof usage #8458

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21 changes: 21 additions & 0 deletions config/opal_setup_cc.m4
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Original file line number Diff line number Diff line change
Expand Up @@ -507,6 +507,27 @@ AC_DEFUN([OPAL_SETUP_CC],[
fi
fi

if test "$opal_c_vendor" = "ibm" ; then
# Check for flag to silence warnings about usage of typeof
CFLAGS_orig="$CFLAGS"

add=" -qkeyword=typeof"
CFLAGS="$CFLAGS_orig$add"
AC_CACHE_CHECK([if $CC supports -qkeyword=typeof],
[opal_cv_cc_qkeyword_typeof],
[AC_TRY_COMPILE([], [],
[opal_cv_cc_qkeyword_typeof="yes"]
[opal_cv_cc_qkeyword_typeof="no"])])
if test "$opal_cv_cc_qkeyword_typeof" = "no" ; then
add=
fi
CFLAGS="$CFLAGS_orig$add"

OPAL_FLAGS_UNIQ(CFLAGS)
AC_MSG_WARN([$add has been added to CFLAGS])
unset add
fi

OPAL_ENSURE_CONTAINS_OPTFLAGS("$OPAL_CFLAGS_BEFORE_PICKY")
OPAL_CFLAGS_BEFORE_PICKY="$co_result"

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