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Add -Wno-unknown-pragmas if supported

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This commit is contained in:
Frank Denis 2022-11-16 19:05:39 +01:00
parent 12023defc8
commit 180ee26d06
2 changed files with 43 additions and 0 deletions
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42
configure vendored
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@ -8540,6 +8540,48 @@ else $as_nop
:
fi
as_CACHEVAR=`printf "%s\n" "ax_cv_check_cflags__$CFLAGS -Wno-unknown-pragmas" | $as_tr_sh`
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether C compiler accepts $CFLAGS -Wno-unknown-pragmas" >&5
printf %s "checking whether C compiler accepts $CFLAGS -Wno-unknown-pragmas... " >&6; }
if eval test \${$as_CACHEVAR+y}
then :
printf %s "(cached) " >&6
else $as_nop
ax_check_save_flags=$CFLAGS
CFLAGS="$CFLAGS $CFLAGS -Wno-unknown-pragmas"
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <time.h>
int
main (void)
{
time_t x; int fodder = 0; if (fodder > -1000 && time(&x)) return (int) x
;
return 0;
}
_ACEOF
if ac_fn_c_try_link "$LINENO"
then :
eval "$as_CACHEVAR=yes"
else $as_nop
eval "$as_CACHEVAR=no"
fi
rm -f core conftest.err conftest.$ac_objext conftest.beam \
conftest$ac_exeext conftest.$ac_ext
CFLAGS=$ax_check_save_flags
fi
eval ac_res=\$$as_CACHEVAR
{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5
printf "%s\n" "$ac_res" >&6; }
if eval test \"x\$"$as_CACHEVAR"\" = x"yes"
then :
CFLAGS="$CFLAGS -Wno-unknown-pragmas"
else $as_nop
:
fi

1
configure.ac
View File

@ -312,6 +312,7 @@ AS_CASE([$host_os],
])
AX_CHECK_COMPILE_FLAG([$CFLAGS -Wall], [CWFLAGS="$CFLAGS -Wall"])
AX_CHECK_COMPILE_FLAG([$CFLAGS -Wno-unknown-pragmas], [CFLAGS="$CFLAGS -Wno-unknown-pragmas"])
AC_ARG_VAR([CWFLAGS], [compilation flags for generating extra warnings])