make CC_VERSION available to packages by including bsd.prefs.mk.

it is of the form 'gcc-<version>' if gcc is being used, or empty
otherwise (for now).

requested by tron.

1 files changed, 18 insertions, 3 deletions

diff --git a/mk/compiler.mk b/mk/compiler.mk
index f77084083de..1e92273b392 100644
--- a/mk/compiler.mk
+++ b/mk/compiler.mk
@@ -1,4 +1,4 @@
-# $NetBSD: compiler.mk,v 1.11 2003/09/24 03:01:02 grant Exp $
+# $NetBSD: compiler.mk,v 1.12 2003/09/24 12:22:04 grant Exp $
 
 # This Makefile fragment implements handling for supported
 # C/C++/fortran compilers.
@@ -45,8 +45,6 @@
 .if !defined(COMPILER_MK)
 COMPILER_MK=	# defined
 
-.include "../../mk/bsd.prefs.mk"
-
 # Do a dance to determine which version of gcc is being used, if any,
 # and whether it satisfies GCC_REQD.
 #
@@ -133,6 +131,7 @@ BUILD_DEPENDS+=		gcc>=${GCC_REQD}:../../lang/gcc
 .    endif
 .  endif	# buildlink2
 
+_CC_IS_GCC=		YES
 PATH:=			${_GCC_PREFIX}bin:${PATH}
 CC=			${_GCC_PREFIX}bin/gcc
 CPP=			${_GCC_PREFIX}bin/cpp
@@ -167,6 +166,7 @@ BUILD_DEPENDS+=		gcc3>=${GCC_REQD}:../../lang/gcc3
 .    endif
 .  endif	# buildlink2
 
+_CC_IS_GCC=		YES
 PATH:=			${_GCC_PREFIX}bin:${PATH}
 CC=			${_GCC_PREFIX}bin/gcc
 CPP=			${_GCC_PREFIX}bin/cpp
@@ -182,6 +182,21 @@ _GCC_LDFLAGS=		-L${_GCC_ARCHDIR} -Wl,${RPATH_FLAG}${_GCC_ARCHDIR} -L${_GCC_PREFI
 LDFLAGS+=		${_GCC_LDFLAGS}
 .endif
 
+# CC_VERSION can be tested by package Makefiles to tweak things based
+# on the compiler being used. This is only functional for gcc right now.
+#
+CC_VERSION?=		# empty
+.if defined(_CC_IS_GCC)
+.  if !defined(_CC_VERSION)
+_CC_VERSION!=		if ${CC} -dumpversion > /dev/null 2>&1; then \
+				${ECHO} `${CC} -dumpversion`; \
+			else \
+				${ECHO} ""; \
+			fi
+.  endif
+CC_VERSION=		gcc-${_CC_VERSION}
+.endif
+
 # The SunPro C++ compiler doesn't support passing linker flags with
 # -Wl to CC, so we make buildlink2 perform the required magic.
 #