# Provide support for CMake based projects
#
# Feature:		cmake
# Usage:		USES=cmake or USES=cmake:ARGS
# Valid ARGS:		insource, run, noninja, testing
# ARGS description:
# insource		do not perform an out-of-source build
# noninja		don't use ninja instead of make
#			Setting this should be an exception, and hints to an issue
#			inside the ports build system.
#			A few corner cases never use ninja, and are handled, to reduce
#			the usage of 'noninja'.:
#				1) fortran ports
#				2) ports that set BUILD_- or INSTALL_WRKSRC to
#				   something different than CONFIGURE_WRKSRC
# run			add a runtime dependency on cmake
# testing		add the test target based on ctest
#			Additionally, CMAKE_TESTING_ON, CMAKE_TESTING_OFF, CMAKE_TESTING_ARGS, CMAKE_TESTING_TARGET
#			can be defined to override the default values.
#
#
# Additional variables that affect cmake behaviour:
#
# User defined variables:
# CMAKE_NOCOLOR		- Disable colour build output
#			Default: not set, unless BATCH or PACKAGE_BUILDING is defined
#
# Variables for ports:
# CMAKE_ON		Appends -D<var>:bool=ON  to the CMAKE_ARGS,
# CMAKE_OFF		Appends -D<var>:bool=OFF to the CMAKE_ARGS.
# CMAKE_ARGS		- Arguments passed to cmake
#			Default: see below
# CMAKE_BUILD_TYPE	- Type of build (cmake predefined build types).
#			Projects may have their own build profiles.
#			CMake supports the following types: Debug,
#			Release, RelWithDebInfo and MinSizeRel.
#			Debug and Release profiles respect system
#			CFLAGS, RelWithDebInfo and MinSizeRel will set
#			CFLAGS to "-O2 -g" and "-Os -DNDEBUG".
#			Default: Release, if WITH_DEBUG is not set,
#			Debug otherwise
# CMAKE_SOURCE_PATH	- Path to the source directory
#			Default: ${WRKSRC}
#
# MAINTAINER: kde@FreeBSD.org

.if !defined(_INCLUDE_USES_CMAKE_MK)
_INCLUDE_USES_CMAKE_MK=	yes

_valid_ARGS=		insource run noninja testing

# Sanity check
.for arg in ${cmake_ARGS}
.    if empty(_valid_ARGS:M${arg})
IGNORE=	Incorrect 'USES+= cmake:${cmake_ARGS}' usage: argument [${arg}] is not recognized
.    endif
.endfor

CMAKE_BIN=		${LOCALBASE}/bin/cmake
BUILD_DEPENDS+=		${CMAKE_BIN}:devel/cmake

.if ${cmake_ARGS:Mrun}
RUN_DEPENDS+=		${CMAKE_BIN}:devel/cmake
.endif

.if defined(WITH_DEBUG)
CMAKE_BUILD_TYPE?=	Debug
.else
CMAKE_BUILD_TYPE?=	Release
.endif #defined(WITH_DEBUG)

PLIST_SUB+=		CMAKE_BUILD_TYPE="${CMAKE_BUILD_TYPE:tl}"

.if defined(STRIP) && ${STRIP} != "" && !defined(WITH_DEBUG)
INSTALL_TARGET?=	install/strip
.endif

CMAKE_ARGS+=		-DCMAKE_C_COMPILER:STRING="${CC}" \
			-DCMAKE_CXX_COMPILER:STRING="${CXX}" \
			-DCMAKE_C_FLAGS:STRING="${CFLAGS}" \
			-DCMAKE_C_FLAGS_DEBUG:STRING="${CFLAGS}" \
			-DCMAKE_C_FLAGS_RELEASE:STRING="${CFLAGS}" \
			-DCMAKE_CXX_FLAGS:STRING="${CXXFLAGS}" \
			-DCMAKE_CXX_FLAGS_DEBUG:STRING="${CXXFLAGS}" \
			-DCMAKE_CXX_FLAGS_RELEASE:STRING="${CXXFLAGS}" \
			-DCMAKE_EXE_LINKER_FLAGS:STRING="${LDFLAGS}" \
			-DCMAKE_MODULE_LINKER_FLAGS:STRING="${LDFLAGS}" \
			-DCMAKE_SHARED_LINKER_FLAGS:STRING="${LDFLAGS}" \
			-DCMAKE_INSTALL_PREFIX:PATH="${CMAKE_INSTALL_PREFIX}" \
			-DCMAKE_BUILD_TYPE:STRING="${CMAKE_BUILD_TYPE}" \
			-DTHREADS_HAVE_PTHREAD_ARG:BOOL=YES \
			-DCMAKE_INSTALL_RPATH_USE_LINK_PATH=YES \
			-DCMAKE_VERBOSE_MAKEFILE:BOOL=ON

# Handle the option-like CMAKE_ON and CMAKE_OFF lists.
.for _bool_kind in ON OFF
.  if defined(CMAKE_${_bool_kind})
CMAKE_ARGS+=		${CMAKE_${_bool_kind}:C/.*/-D&:BOOL=${_bool_kind}/}
.  endif
.endfor

CMAKE_INSTALL_PREFIX?=	${PREFIX}

.if defined(BATCH) || defined(PACKAGE_BUILDING)
CMAKE_NOCOLOR=		yes
.endif

.if defined(CMAKE_NOCOLOR)
CMAKE_ARGS+=		-DCMAKE_COLOR_MAKEFILE:BOOL=OFF
.endif

_CMAKE_MSG=		"===>  Performing in-source build"
CMAKE_SOURCE_PATH?=	${WRKSRC}

.if empty(cmake_ARGS:Minsource)
_CMAKE_MSG=		"===>  Performing out-of-source build"
CONFIGURE_WRKSRC=	${WRKDIR}/.build
BUILD_WRKSRC?=		${CONFIGURE_WRKSRC}
INSTALL_WRKSRC?=	${CONFIGURE_WRKSRC}
TEST_WRKSRC?=		${CONFIGURE_WRKSRC}
.endif

# By default we use the ninja generator.
#  Except, if cmake:run is set (cmake not wanted as generator)
#             fortran is used, as the ninja-generator does not handle it.
#             or if CONFIGURE_WRKSRC does not match  BUILD_WRKSRC or INSTALL_WRKSRC
#             as the build.ninja file won't be where ninja expects it.
.if empty(cmake_ARGS:Mnoninja) && empty(cmake_ARGS:Mrun) && empty(USES:Mfortran)
.  if "${CONFIGURE_WRKSRC}" == "${BUILD_WRKSRC}" && "${CONFIGURE_WRKSRC}" == "${INSTALL_WRKSRC}"
.    if ! empty(USES:Mgmake)
BROKEN=		USES=gmake is incompatible with cmake's ninja-generator
.    endif
.      include "${USESDIR}/ninja.mk"
.  endif
.endif

.if !target(do-configure)
do-configure:
	@${ECHO_MSG} ${_CMAKE_MSG}
	${MKDIR} ${CONFIGURE_WRKSRC}
	@cd ${CONFIGURE_WRKSRC}; ${SETENV} ${CONFIGURE_ENV} ${CMAKE_BIN} ${CMAKE_ARGS} ${CMAKE_SOURCE_PATH}
.endif

.if !target(do-test) && ${cmake_ARGS:Mtesting}
CMAKE_TESTING_ON?=		BUILD_TESTING
CMAKE_TESTING_TARGET?=		test

# Handle the option-like CMAKE_TESTING_ON and CMAKE_TESTING_OFF lists.
.for _bool_kind in ON OFF
.  if defined(CMAKE_TESTING_${_bool_kind})
CMAKE_TESTING_ARGS+=		${CMAKE_TESTING_${_bool_kind}:C/.*/-D&:BOOL=${_bool_kind}/}
.  endif
.endfor

do-test:
	@cd ${BUILD_WRKSRC} && \
		${SETENV} ${CONFIGURE_ENV} ${CMAKE_BIN} ${CMAKE_ARGS} ${CMAKE_TESTING_ARGS} ${CMAKE_SOURCE_PATH} && \
		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} ${ALL_TARGET} && \
		${SETENV} ${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} ${CMAKE_TESTING_TARGET}
.endif

.endif #!defined(_INCLUDE_USES_CMAKE_MK)
