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freebsd_amp_hwpstate
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Add a new predefined preprocessor symbol "__FreeBSD_cc_version", 

with a numeric value that describes the feature level of the
compiler.  This can be used to check for the presence/absence of
FreeBSD-specific compiler features.  The value is a decimal number
whose digits have the form VRRRRFF, where:

	V    = Compiler vendor.  0 (elided) means gcc.
	RRRR = Vendor's version number, e.g., 2721 for the current
	       gcc version (2.7.2.1).
	FF   = FreeBSD-specific revision level.  00 means the stock
	       compiler from the vendor.

The value of "__FreeBSD_cc_version" is hard-coded in
"src/contrib/gcc/config/i386/freebsd.h" and must be incremented
when new FreeBSD-specific compiler features are added.  I considered
simply picking up the value of FreeBSD_version from <osreldate.h>.
But that would break cross compiles of gcc.

PR:		Part of the fix for gnu/8452
Suggested by:	bde
This commit is contained in:
John Polstra 1998-10-29 04:27:06 +00:00
parent 004c6ac7fd
commit 98bf848b69
2 changed files with 2 additions and 2 deletions
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2
contrib/gcc/config/i386/freebsd.h
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@ -477,7 +477,7 @@ do { \
#endif /* FREEBSD_NATIVE */
#undef CPP_PREDEFINES
#define CPP_PREDEFINES "-Dunix -Di386 -D__FreeBSD__=3 -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)"
#define CPP_PREDEFINES "-Dunix -Di386 -D__FreeBSD__=3 -D__FreeBSD_cc_version=272101 -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)"
#undef CPP_SPEC
#if TARGET_CPU_DEFAULT == 2

2
contrib/gcc/config/i386/freebsd.h.fixed
View File

@ -477,7 +477,7 @@ do { \
#endif /* FREEBSD_NATIVE */
#undef CPP_PREDEFINES
#define CPP_PREDEFINES "-Dunix -Di386 -D__FreeBSD__=3 -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)"
#define CPP_PREDEFINES "-Dunix -Di386 -D__FreeBSD__=3 -D__FreeBSD_cc_version=272101 -Asystem(unix) -Asystem(FreeBSD) -Acpu(i386) -Amachine(i386)"
#undef CPP_SPEC
#if TARGET_CPU_DEFAULT == 2