# $FreeBSD$
#
# Objective C support
#
# Feature:	objc
# Usage:	USES=objc
#
# MAINTAINER:	objc@FreeBSD.org

.if !defined(_INCLUDE_USES_OBJC_MK)
_INCLUDE_USES_OBJC_MK=	yes

OBJC_CLANG_VERSION=60

objc_ARGS?=
.if !empty(objc_ARGS) && ! ${objc_ARGS:Mcompiler}
IGNORE=	USES=objc only accepts no arguments or 'compiler'
.endif

_CC_hash:=	${CC:hash}

.if defined(_OBJC_CCVERSION_${_CC_hash})
_CCVERSION=	${_OBJC_CCVERSION_${_CC_hash}}
.else
_CCVERSION!=	${CC} --version
_OBJC_CCVERSION_${_CC_hash}=	${_CCVERSION}
PORTS_ENV_VARS+=	_OBJC_CCVERSION_${_CC_hash}
.endif
COMPILER_VERSION=	${_CCVERSION:M[0-9].[0-9]*:tW:C/([0-9]).([0-9]).*/\1\2/g}
.if ${_CCVERSION:Mclang}
COMPILER_TYPE=	clang
.else
COMPILER_TYPE=	gcc
.endif

ALT_COMPILER_VERSION=	0
ALT_COMPILER_TYPE=	none
_ALTCCVERSION=		none
.if defined(_OBJC_ALTCCVERSION_${_CC_hash})
_ALTCCVERSION=	${_OBJC_ALTCCVERSION_${_CC_hash}}
.else
.if ${COMPILER_TYPE} == gcc && exists(/usr/bin/clang)
_ALTCCVERSION!=	/usr/bin/clang --version
.elif ${COMPILER_TYPE} == clang && exists(/usr/bin/gcc)
_ALTCCVERSION!=	/usr/bin/gcc --version
.endif
_OBJC_ALTCCVERSION_${_CC_hash}=	${_ALTCCVERSION}
PORTS_ENV_VARS+=		_OBJC_ALTCCVERSION_${_CC_hash}
.endif

ALT_COMPILER_VERSION=	${_ALTCCVERSION:M[0-9].[0-9]*:tW:C/([0-9]).([0-9]).*/\1\2/g}
.if ${_ALTCCVERSION:Mclang}
ALT_COMPILER_TYPE=	clang
.elif !empty(_ALTCCVERSION)
ALT_COMPILER_TYPE=	gcc
.endif

# We do always need clang and prefer a recent version
.if (${COMPILER_TYPE} == clang && ${COMPILER_VERSION} < ${OBJC_CLANG_VERSION}) || ${COMPILER_TYPE} != clang
.if ${ALT_COMPILER_TYPE} == clang && ${ALT_COMPILER_VERSION} >= ${OBJC_CLANG_VERSION}
CC=	/usr/bin/clang
CPP=	/usr/bin/clang-cpp
CXX=	/usr/bin/clang++
.else
BUILD_DEPENDS+=	${LOCALBASE}/bin/clang${OBJC_CLANG_VERSION}:devel/llvm${OBJC_CLANG_VERSION}
CPP=	${LOCALBASE}/bin/clang-cpp${OBJC_CLANG_VERSION}
CC=	${LOCALBASE}/bin/clang${OBJC_CLANG_VERSION}
CXX=	${LOCALBASE}/bin/clang++${OBJC_CLANG_VERSION}
.endif
.endif

.if ! ${objc_ARGS:Mcompiler}
LIB_DEPENDS+=	libobjc.so.4.6:lang/libobjc2
OBJCFLAGS+=	-I${LOCALBASE}/include
LDFLAGS+=	-L${LOCALBASE}/lib
.endif
CONFIGURE_ENV+=	OBJC="${CC}" OBJCFLAGS="${OBJCFLAGS}"
MAKE_ENV+=	OBJC="${CC}" OBJCFLAGS="${OBJCFLAGS}"

.endif