# 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=	${LLVM_DEFAULT}

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]*:[1]:C/([0-9]+)\.([0-9]+)\..*/\1\2/}
.  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]*:[1]:C/([0-9]+)\.([0-9]+)\..*/\1\2/}
.  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++
OBJC_LLD=	lld
.    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}
OBJC_LLD=	lld${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