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cmake_minimum_required(VERSION 2.8.7 FATAL_ERROR)
#-----------------------------------------------------------------------
# CPM configuration
#-----------------------------------------------------------------------
set(CPM_MODULE_NAME lodepng)
set(CPM_LIB_TARGET_NAME ${CPM_MODULE_NAME})
if ((DEFINED CPM_DIR) AND (DEFINED CPM_UNIQUE_ID) AND (DEFINED CPM_TARGET_NAME))
set(CPM_LIB_TARGET_NAME ${CPM_TARGET_NAME})
set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${CPM_DIR})
include(CPM)
else()
set(CPM_DIR "${CMAKE_CURRENT_BINARY_DIR}/cpm-packages" CACHE TYPE STRING)
find_package(Git)
if(NOT GIT_FOUND)
message(FATAL_ERROR "CPM requires Git.")
endif()
if (NOT EXISTS ${CPM_DIR}/CPM.cmake)
execute_process(
COMMAND "${GIT_EXECUTABLE}" clone https://github.com/iauns/cpm ${CPM_DIR}
RESULT_VARIABLE error_code
OUTPUT_VARIABLE head_sha)
if(error_code)
message(FATAL_ERROR "CPM failed to get the hash for HEAD")
endif()
endif()
include(${CPM_DIR}/CPM.cmake)
endif()
# All externals *must* define this.
CPM_ForceOnlyOneModuleVersion()
CPM_InitModule(${CPM_MODULE_NAME})
#------------------------------------------------------------------------------
# lodepng
#------------------------------------------------------------------------------
# Include CMake external project module.
include(ExternalProject)
set(REPO_SOURCE_DIR "${CMAKE_CURRENT_SOURCE_DIR}/3rdParty")
CPM_EnsureRepoIsCurrent(
TARGET_DIR ${REPO_SOURCE_DIR}/lodepng
SVN_REPOSITORY "http://lpi.googlecode.com/svn/trunk"
SVN_REVISION "HEAD"
USE_CACHING TRUE
)
# Export include directory such that we have to prefix lodepng. Note the
# addition of '/lodepng' in TARGET_DIR abov.
CPM_ExportAdditionalIncludeDir("${REPO_SOURCE_DIR}")
#-----------------------------------------------------------------------
# Source
#-----------------------------------------------------------------------
# Globbing has some downsides, but the advantages outweigh the
# disadvantages.
file (GLOB Sources
"${REPO_SOURCE_DIR}/lodepng/lodepng.cpp"
"${REPO_SOURCE_DIR}/lodepng/lodepng.h"
)
#-----------------------------------------------------------------------
# Library setup
#-----------------------------------------------------------------------
# Build the library.
add_library(${CPM_LIB_TARGET_NAME} ${Sources})
if (NOT EMSCRIPTEN AND CPM_LIBRARIES)
target_link_libraries(${CPM_LIB_TARGET_NAME} ${CPM_LIBRARIES})
endif()