Create a buildlink2.mk file for lang/gcc. Aside from the usual tunable

variables, there is a new one, GCC_REQD, that contains the minimum version
of GCC needed to compile the package.  For the purpose of version
comparison, all versions of EGCS are considered to be gcc-2.8.1.

This buildlink2.mk file attempts to be smart, so if the gcc in your path is
actually the one from lang/gcc, then it's considered that you need lang/gcc
at least at build-time.

There is also a new variable USE_CXX, that tells the buildlink2.mk file
whether you need to link against libstdc++.so, and thus need a _full_
dependency on lang/gcc.

1 files changed, 88 insertions, 0 deletions

diff --git a/lang/gcc/buildlink2.mk b/lang/gcc/buildlink2.mk
new file mode 100644
index 00000000000..4083924e8ca
--- /dev/null
+++ b/lang/gcc/buildlink2.mk
@@ -0,0 +1,88 @@
+# $NetBSD: buildlink2.mk,v 1.1 2002/09/27 13:07:13 jlam Exp $
+
+.if !defined(GCC_BUILDLINK2_MK)
+GCC_BUILDLINK2_MK=	# defined
+
+.include "../../mk/bsd.prefs.mk"
+
+# If you want to allow EGCS to satisfy the GCC requirement, then set
+# GCC_REQD to "2.8.0".
+#
+GCC_REQD?=			2.95.3
+BUILDLINK_DEPENDS.gcc?=		gcc>=${GCC_REQD}
+BUILDLINK_PKGSRCDIR.gcc?=	../../lang/gcc
+
+# Packages that use the C++ compiler and subsequently link against the
+# shared libstdc++ from the package need a full dependency.
+#
+.if defined(USE_CXX)
+BUILDLINK_DEPMETHOD.gcc+=	full
+.else
+BUILDLINK_DEPMETHOD.gcc?=	build
+.endif
+
+.if ${OPSYS} == "SunOS"
+BUILDLINK_PREFIX.gcc=	${LOCALBASE}
+.else
+BUILDLINK_PREFIX.gcc=	${LOCALBASE}/gcc-2.95.3
+.endif
+
+.if defined(USE_PKGSRC_GCC)
+_NEED_PKGSRC_GCC=	YES
+.else
+_GCC_VERSION!=		( gcc --version ) 2>/dev/null || ${ECHO} 0
+.  if !empty(_GCC_VERSION:Megcs-[0-9]*)
+#
+# Consider EGCS to be gcc-2.8.1, so it will match 'gcc>=2.8.0'.
+#
+_GCC_PKG=		gcc-2.8.1
+.  else
+_GCC_PKG=		gcc-${_GCC_VERSION}
+.  endif
+_NEED_PKGSRC_GCC!= \
+	if ${PKG_ADMIN} pmatch '${BUILDLINK_DEPENDS.gcc}' ${_GCC_PKG}; then \
+		gccpath=`${TYPE} gcc | ${AWK} '{ print $$NF }'`;	\
+		if [ "$$gccpath" = "${BUILDLINK_PREFIX.gcc}/bin/gcc" ]; then \
+			${ECHO} "YES";					\
+		else							\
+			${ECHO} "NO";					\
+		fi;							\
+	else								\
+		echo "YES";						\
+	fi
+.endif
+
+.if ${_NEED_PKGSRC_GCC} == "YES"
+BUILDLINK_PACKAGES+=	gcc
+PATH:=		${BUILDLINK_PREFIX.gcc}/bin:${PATH}
+CC=		${BUILDLINK_PREFIX.gcc}/bin/gcc
+CPP=		${BUILDLINK_PREFIX.gcc}/bin/cpp
+CXX=		${BUILDLINK_PREFIX.gcc}/bin/g++
+F77=		${BUILDLINK_PREFIX.gcc}/bin/g77
+PKG_FC=		${F77}
+
+BUILDLINK_LDFLAGS.gcc=	-Wl,-R${BUILDLINK_PREFIX.gcc}/lib
+LDFLAGS+=		${BUILDLINK_LDFLAGS.gcc}
+.endif	# _NEED_PKGSRC_GCC == YES
+
+_GCC_ARCHSUBDIR=	lib/gcc-lib/${MACHINE_GNU_PLATFORM}/${_GCC_VERSION}
+
+# These file are from gcc>=2.95.3.
+BUILDLINK_FILES.gcc=	include/g++-3/*
+BUILDLINK_FILES.gcc+=	include/g++-3/*/*
+BUILDLINK_FILES.gcc+=	${_GCC_ARCHSUBDIR}/include/*
+BUILDLINK_FILES.gcc+=	${_GCC_ARCHSUBDIR}/include/*/*
+BUILDLINK_FILES.gcc+=	${_GCC_ARCHSUBDIR}/include/*/*/*
+BUILDLINK_FILES.gcc+=	${_GCC_ARCHSUBDIR}/include/*/*/*/*
+BUILDLINK_FILES.gcc+=	${_GCC_ARCHSUBDIR}/lib*.*
+BUILDLINK_FILES.gcc+=	${_GCC_ARCHSUBDIR}/specs
+BUILDLINK_FILES.gcc+=	${MACHINE_GNU_PLATFORM}/include/*
+BUILDLINK_FILES.gcc+=	${MACHINE_GNU_PLATFORM}/include/*/*
+BUILDLINK_FILES.gcc+=	lib/libiberty.*
+BUILDLINK_FILES.gcc+=	lib/libstdc++.*
+
+BUILDLINK_TARGETS+=	gcc-buildlink
+
+gcc-buildlink: _BUILDLINK_USE
+
+.endif	# GCC_BUILDLINK2_MK