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