Date: Wed, 17 Oct 2007 20:27:58 +0200 From: Ed Schouten <ed@fxq.nl> To: Abdullah Ibn Hamad Al-Marri <wearabnet@yahoo.ca> Cc: FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: PCC and FreeBSD in the future? Message-ID: <20071017182758.GU5411@hoeg.nl> In-Reply-To: <20071017173941.GT5411@hoeg.nl> References: <132802.25776.qm@web33711.mail.mud.yahoo.com> <20071017173941.GT5411@hoeg.nl>
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* Ed Schouten <ed@fxq.nl> wrote:
> One of the major obstacles for PCC is that it didn't support a way to
> pack structures in a comfortable way. Most of the FreeBSD userland just
> built with it. Most of the stuff that didn't compile properly, was
> related to kernel headers, using __attribute__ stuff, instead of the
> cdef'd stuff, like __packed. It seems things have changed in the mean
> time.
Indeed; PCC now supports _Pragma("packed"). I've attached a patch for
sys/cdefs.h that should make at least src/bin compile like it should.
The patch is in no way meant to be complete.
--=20
Ed Schouten <ed@fxq.nl>
WWW: http://g-rave.nl/
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--- src/sys/sys/cdefs.h 2006-09-21 03:38:58.000000000 +0200
+++ src/sys/sys/cdefs.h 2007-10-17 19:56:42.000000000 +0200
@@ -111,7 +111,7 @@
/*
* Macro to test if we're using a specific version of gcc or later.
*/
-#if defined(__GNUC__) && !defined(__INTEL_COMPILER)
+#if defined(__GNUC__) && !defined(__INTEL_COMPILER) && !defined(__PCC__)
#define __GNUC_PREREQ__(ma, mi) \
(__GNUC__ > (ma) || __GNUC__ =3D=3D (ma) && __GNUC_MINOR__ >=3D (mi))
#else
@@ -140,7 +140,7 @@
#define __const const /* define reserved names to standard */
#define __signed signed
#define __volatile volatile
-#if defined(__cplusplus)
+#if defined(__cplusplus) || defined(__PCC__)
#define __inline inline /* convert to C++ keyword */
#else
#if !(defined(__CC_SUPPORTS___INLINE))
@@ -221,6 +221,15 @@
#define __aligned(x) __attribute__((__aligned__(x)))
#define __section(x) __attribute__((__section__(x)))
#endif
+#if defined(__PCC__)
+#define __dead2
+#define __pure2
+#define __unused
+#define __used
+#define __packed _Pragma("packed")
+#define __aligned(x)
+#define __section(x)
+#endif
#endif
=20
#if __GNUC_PREREQ__(2, 96)
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