mirror of
https://github.com/netwide-assembler/nasm.git
synced 2024-12-27 09:29:06 +08:00
1fb908c0db
OpenWatcom 1.8 has a C99 mode, which implements _Bool and <stdbool.h>. Unfortunately the implementation is broken, and doesn't let _Bool be implicitly converted to integer (as required by the C99 spec). Detect this case in autoconf.
40 lines
1.2 KiB
Plaintext
40 lines
1.2 KiB
Plaintext
dnl --------------------------------------------------------------------------
|
|
dnl PA_ADD_CFLAGS()
|
|
dnl
|
|
dnl Attempt to add the given option to CFLAGS, if it doesn't break compilation
|
|
dnl --------------------------------------------------------------------------
|
|
AC_DEFUN(PA_ADD_CFLAGS,
|
|
[AC_MSG_CHECKING([if $CC accepts $1])
|
|
pa_add_cflags__old_cflags="$CFLAGS"
|
|
CFLAGS="$CFLAGS $1"
|
|
AC_TRY_LINK([#include <stdio.h>],
|
|
[printf("Hello, World!\n");],
|
|
AC_MSG_RESULT([yes]),
|
|
AC_MSG_RESULT([no])
|
|
CFLAGS="$pa_add_cflags__old_cflags")])
|
|
|
|
dnl --------------------------------------------------------------------------
|
|
dnl PA_WORKING_STDBOOL
|
|
dnl
|
|
dnl See if we have a working <stdbool.h> and bool support; in particular,
|
|
dnl OpenWatcom 1.8 has a broken _Bool type that we don't want to use.
|
|
dnl --------------------------------------------------------------------------
|
|
AC_DEFUN(PA_WORKING_BOOL,
|
|
[AC_MSG_CHECKING([if $CC has a working bool type])
|
|
AC_COMPILE_IFELSE(
|
|
[
|
|
#ifndef __cplusplus
|
|
#include <stdbool.h>
|
|
#endif
|
|
int foo(bool x, int y)
|
|
{
|
|
return x+y;
|
|
}
|
|
],
|
|
[AC_MSG_RESULT([yes])
|
|
AC_DEFINE(HAVE_WORKING_BOOL, 1,
|
|
[Define to 1 if your compiler has a correct implementation of bool])],
|
|
[AC_MSG_RESULT([no])])
|
|
])
|
|
|