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Diffstat (limited to 'Modules/CMakeFindPackageMode.cmake')
-rw-r--r-- | Modules/CMakeFindPackageMode.cmake | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/Modules/CMakeFindPackageMode.cmake b/Modules/CMakeFindPackageMode.cmake new file mode 100644 index 000000000..59c7ba5ee --- /dev/null +++ b/Modules/CMakeFindPackageMode.cmake @@ -0,0 +1,188 @@ +# This file is executed by cmake when invoked with --find-package. +# It expects that the following variables are set using -D: +# NAME = name of the package +# COMPILER_ID = the CMake compiler ID for which the result is, i.e. GNU/Intel/Clang/MSVC, etc. +# LANGUAGE = language for which the result will be used, i.e. C/CXX/Fortan/ASM +# MODE = EXIST : only check for existance of the given package +# COMPILE : print the flags needed for compiling an object file which uses the given package +# LINK : print the flags needed for linking when using the given package +# QUIET = if TRUE, don't print anything + +#============================================================================= +# Copyright 2006-2011 Alexander Neundorf, <neundorf@kde.org> +# +# Distributed under the OSI-approved BSD License (the "License"); +# see accompanying file Copyright.txt for details. +# +# This software is distributed WITHOUT ANY WARRANTY; without even the +# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. +# See the License for more information. +#============================================================================= +# (To distribute this file outside of CMake, substitute the full +# License text for the above reference.) + +if(NOT NAME) + message(FATAL_ERROR "Name of the package to be searched not specified. Set the CMake variable NAME, e.g. -DNAME=JPEG .") +endif() + +if(NOT COMPILER_ID) + message(FATAL_ERROR "COMPILER_ID argument not specified. In doubt, use GNU.") +endif() + +if(NOT LANGUAGE) + message(FATAL_ERROR "LANGUAGE argument not specified. Use C, CXX or Fortran.") +endif() + +if(NOT MODE) + message(FATAL_ERROR "MODE argument not specified. Use either EXIST, COMPILE or LINK.") +endif() + +# require the current version. If we don't do this, Platforms/CYGWIN.cmake complains because +# it doesn't know whether it should set WIN32 or not: +cmake_minimum_required(VERSION ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}.${CMAKE_PATCH_VERSION} ) + +macro(ENABLE_LANGUAGE) + # disable the enable_language() command, otherwise --find-package breaks on Windows. + # On Windows, enable_language(RC) is called in the platform files unconditionally. + # But in --find-package mode, we don't want (and can't) enable any language. +endmacro() + +include(CMakeDetermineSystem) + +# short-cut some tests on Darwin, see Darwin-GNU.cmake: +if("${CMAKE_SYSTEM_NAME}" MATCHES Darwin AND "${COMPILER_ID}" MATCHES GNU) + set(${CMAKE_${LANGUAGE}_HAS_ISYSROOT} 0 ) + set(CMAKE_${lang}_OSX_DEPLOYMENT_TARGET_FLAG "") +endif() + +# Also load the system specific file, which sets up e.g. the search paths. +# This makes the FIND_XXX() calls work much better +include(CMakeSystemSpecificInformation) + +if(UNIX) + + # try to guess whether we have a 64bit system, if it has not been set + # from the outside + if(NOT CMAKE_SIZEOF_VOID_P) + set(CMAKE_SIZEOF_VOID_P 4) + if(EXISTS /usr/lib64) + set(CMAKE_SIZEOF_VOID_P 8) + else() + # use the file utility to check whether itself is 64 bit: + find_program(FILE_EXECUTABLE file) + if(FILE_EXECUTABLE) + get_filename_component(FILE_ABSPATH "${FILE_EXECUTABLE}" ABSOLUTE) + execute_process(COMMAND "${FILE_ABSPATH}" "${FILE_ABSPATH}" OUTPUT_VARIABLE fileOutput ERROR_QUIET) + if("${fileOutput}" MATCHES "64-bit") + set(CMAKE_SIZEOF_VOID_P 8) + endif() + endif() + endif() + endif() + + # guess Debian multiarch if it has not been set: + if(EXISTS /etc/debian_version) + if(NOT CMAKE_${LANGUAGE}_LANGUAGE_ARCHITECTURE ) + file(GLOB filesInLib RELATIVE /lib /lib/*-linux-gnu* ) + foreach(file ${filesInLib}) + if("${file}" MATCHES "${CMAKE_LIBRARY_ARCHITECTURE_REGEX}") + set(CMAKE_${LANGUAGE}_LANGUAGE_ARCHITECTURE ${file}) + break() + endif() + endforeach() + endif() + endif() + +endif() + +set(CMAKE_${LANGUAGE}_COMPILER "dummy") +set(CMAKE_${LANGUAGE}_COMPILER_ID "${COMPILER_ID}") +include(CMake${LANGUAGE}Information) + + +function(set_compile_flags_var _packageName) + string(TOUPPER "${_packageName}" PACKAGE_NAME) + # Check the following variables: + # FOO_INCLUDE_DIRS + # Foo_INCLUDE_DIRS + # FOO_INCLUDES + # Foo_INCLUDES + # FOO_INCLUDE_DIR + # Foo_INCLUDE_DIR + set(includes) + if(DEFINED ${_packageName}_INCLUDE_DIRS) + set(includes ${_packageName}_INCLUDE_DIRS) + elseif(DEFINED ${PACKAGE_NAME}_INCLUDE_DIRS) + set(includes ${PACKAGE_NAME}_INCLUDE_DIRS) + elseif(DEFINED ${_packageName}_INCLUDES) + set(includes ${_packageName}_INCLUDES) + elseif(DEFINED ${PACKAGE_NAME}_INCLUDES) + set(includes ${PACKAGE_NAME}_INCLUDES) + elseif(DEFINED ${_packageName}_INCLUDE_DIR) + set(includes ${_packageName}_INCLUDE_DIR) + elseif(DEFINED ${PACKAGE_NAME}_INCLUDE_DIR) + set(includes ${PACKAGE_NAME}_INCLUDE_DIR) + endif() + + set(PACKAGE_INCLUDE_DIRS "${${includes}}" PARENT_SCOPE) + + # Check the following variables: + # FOO_DEFINITIONS + # Foo_DEFINITIONS + set(definitions) + if(DEFINED ${_packageName}_DEFINITIONS) + set(definitions ${_packageName}_DEFINITIONS) + elseif(DEFINED ${PACKAGE_NAME}_DEFINITIONS) + set(definitions ${PACKAGE_NAME}_DEFINITIONS) + endif() + + set(PACKAGE_DEFINITIONS "${${definitions}}" ) + +endfunction() + + +function(set_link_flags_var _packageName) + string(TOUPPER "${_packageName}" PACKAGE_NAME) + # Check the following variables: + # FOO_LIBRARIES + # Foo_LIBRARIES + # FOO_LIBS + # Foo_LIBS + set(libs) + if(DEFINED ${_packageName}_LIBRARIES) + set(libs ${_packageName}_LIBRARIES) + elseif(DEFINED ${PACKAGE_NAME}_LIBRARIES) + set(libs ${PACKAGE_NAME}_LIBRARIES) + elseif(DEFINED ${_packageName}_LIBS) + set(libs ${_packageName}_LIBS) + elseif(DEFINED ${PACKAGE_NAME}_LIBS) + set(libs ${PACKAGE_NAME}_LIBS) + endif() + + set(PACKAGE_LIBRARIES "${${libs}}" PARENT_SCOPE ) + +endfunction() + + +find_package("${NAME}" QUIET) + +set(PACKAGE_FOUND FALSE) + +string(TOUPPER "${NAME}" UPPERCASE_NAME) + +if(${NAME}_FOUND OR ${UPPERCASE_NAME}_FOUND) + set(PACKAGE_FOUND TRUE) + + if("${MODE}" STREQUAL "EXIST") + # do nothing + elseif("${MODE}" STREQUAL "COMPILE") + set_compile_flags_var(${NAME}) + elseif("${MODE}" STREQUAL "LINK") + set_link_flags_var(${NAME}) + else("${MODE}" STREQUAL "LINK") + message(FATAL_ERROR "Invalid mode argument ${MODE} given.") + endif() + +endif() + +set(PACKAGE_QUIET ${SILENT} ) |