Modify the way that the toolchain variables, e.g. CC, CPP, CXX, LD, etc.,

are handled.  The idea now is to simply remove the paths in the values
of these variables, leaving behind only the basename plus any arguments,
e.g.:

	CC= /usr/local/bin/gcc       becomes   CC= gcc
	CPP= /usr/local/bin/gcc -E   becomes   CPP= gcc -E

The wrapper scripts are generated for every unique executable mentioned
by the toolchain variables, so for the example above, only a "gcc"
wrapper script is generated for ${CC} and ${CPP}.  PKG_{CC,CPP,CXX,etc.}
are the paths to the executables wrapped by the wrapper scripts.

Note that it's now possible to set "CC" to something more than just the
path to the compiler, e.g.

	CC= cc -ffast-math -funroll-loops -fomit-frame-pointer

and the full value of ${CC} will be passed through via CONFIGURE_ENV
and MAKE_ENV.

1 files changed, 18 insertions, 10 deletions

diff --git a/mk/compiler/ccache.mk b/mk/compiler/ccache.mk
index 1fac6383bef..755fc213616 100644
--- a/mk/compiler/ccache.mk
+++ b/mk/compiler/ccache.mk
@@ -1,4 +1,4 @@
-# $NetBSD: ccache.mk,v 1.20 2004/11/17 17:18:33 tv Exp $
+# $NetBSD: ccache.mk,v 1.21 2004/11/30 14:50:37 jlam Exp $
 
 .if !defined(COMPILER_CCACHE_MK)
 COMPILER_CCACHE_MK=	defined
@@ -37,18 +37,20 @@ _CCACHEBASE_DEFAULT=	${LOCALBASE}
 _CCACHEBASE?=		${LOCALBASE}
 
 _CCACHE_DIR=	${WRKDIR}/.ccache
-_CCACHE_LINKS=	# empty
+_CCACHE_VARS=	# empty
 .  if !empty(_LANGUAGES.ccache:Mc)
+PKG_CC?=	${CC}
+_CCACHE_VARS+=	CC
 _CCACHE_CC:=	${_CCACHE_DIR}/bin/${PKG_CC:T}
-_CCACHE_LINKS+=	_CCACHE_CC
+_ALIASES.CC?=	cc
 PKG_CC:=	${_CCACHE_CC}
-CC=		${PKG_CC:T}
 .  endif
 .  if !empty(_LANGUAGES.ccache:Mc++)
+PKG_CXX?=	${CXX}
+_CCACHE_VARS+=	CXX
 _CCACHE_CXX:=	${_CCACHE_DIR}/bin/${PKG_CXX:T}
-_CCACHE_LINKS+=	_CCACHE_CXX
+_ALIASES.CXX?=	c++
 PKG_CXX:=	${_CCACHE_CXX}
-CXX=		${PKG_CXX:T}
 .  endif
 
 # Prepend the path the to the compiler to the PATH
@@ -69,13 +71,19 @@ BUILD_ENV+=	CCACHE_DIR=${CCACHE_DIR:Q}
 .endif
 
 # Create symlinks for the compiler into ${WRKDIR}.
-.  for _target_ in ${_CCACHE_LINKS}
-.    if !target(${${_target_}})
-override-tools: ${${_target_}}
-${${_target_}}:
+.  for _var_ in ${_CCACHE_VARS}
+.    if !target(${_CCACHE_${_var_}})
+override-tools: ${_CCACHE_${_var_}}
+${_CCACHE_${_var_}}:
 	${_PKG_SILENT}${_PKG_DEBUG}${MKDIR} ${.TARGET:H}
 	${_PKG_SILENT}${_PKG_DEBUG}					\
 	${LN} -fs ${_CCACHEBASE}/bin/ccache ${.TARGET}
+.      for _alias_ in ${_ALIASES.${_var_}:S/^/${.TARGET:H}\//}
+	${_PKG_SILENT}${_PKG_DEBUG}					\
+	if [ ! -x "${_alias_}" ]; then					\
+		${LN} -fs ${_CCACHEBASE}/bin/ccache ${_alias_};		\
+	fi
+.      endfor
 .    endif
 .  endfor
 .endif	# _USE_CCACHE == "yes"