From e56aa462976f80762712519a4cf653b8c45bf3db Mon Sep 17 00:00:00 2001 From: Brad King Date: Tue, 16 Aug 2016 16:56:34 -0400 Subject: [PATCH] FindLibUV: Add module to find libuv package Add it to a private source directory that is not installed so that we can use it for building CMake itself. This will allow it to mature before being distributed publicly. --- Source/Modules/FindLibUV.cmake | 131 ++++++++++++++++++++++++++++ Tests/CMakeLists.txt | 4 + Tests/FindLibUV/CMakeLists.txt | 10 +++ Tests/FindLibUV/Test/CMakeLists.txt | 17 ++++ Tests/FindLibUV/Test/main.c | 7 ++ 5 files changed, 169 insertions(+) create mode 100644 Source/Modules/FindLibUV.cmake create mode 100644 Tests/FindLibUV/CMakeLists.txt create mode 100644 Tests/FindLibUV/Test/CMakeLists.txt create mode 100644 Tests/FindLibUV/Test/main.c diff --git a/Source/Modules/FindLibUV.cmake b/Source/Modules/FindLibUV.cmake new file mode 100644 index 000000000..7391aa779 --- /dev/null +++ b/Source/Modules/FindLibUV.cmake @@ -0,0 +1,131 @@ +#[=======================================================================[.rst: +FindLibUV +--------- + +Find libuv includes and library. + +Imported Targets +^^^^^^^^^^^^^^^^ + +An :ref:`imported target ` named +``LibUV::LibUV`` is provided if libuv has been found. + +Result Variables +^^^^^^^^^^^^^^^^ + +This module defines the following variables: + +``LibUV_FOUND`` + True if libuv was found, false otherwise. +``LibUV_INCLUDE_DIRS`` + Include directories needed to include libuv headers. +``LibUV_LIBRARIES`` + Libraries needed to link to libuv. +``LibUV_VERSION`` + The version of libuv found. +``LibUV_VERSION_MAJOR`` + The major version of libuv. +``LibUV_VERSION_MINOR`` + The minor version of libuv. +``LibUV_VERSION_PATCH`` + The patch version of libuv. + +Cache Variables +^^^^^^^^^^^^^^^ + +This module uses the following cache variables: + +``LibUV_LIBRARY`` + The location of the libuv library file. +``LibUV_INCLUDE_DIR`` + The location of the libuv include directory containing ``uv.h``. + +The cache variables should not be used by project code. +They may be set by end users to point at libuv components. +#]=======================================================================] + +#============================================================================= +# Copyright 2014-2016 Kitware, Inc. +# +# 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.) + +#----------------------------------------------------------------------------- +find_library(LibUV_LIBRARY + NAMES uv + ) +mark_as_advanced(LibUV_LIBRARY) + +find_path(LibUV_INCLUDE_DIR + NAMES uv.h + ) +mark_as_advanced(LibUV_INCLUDE_DIR) + +#----------------------------------------------------------------------------- +# Extract version number if possible. +set(_LibUV_H_REGEX "#[ \t]*define[ \t]+UV_VERSION_(MAJOR|MINOR|PATCH)[ \t]+[0-9]+") +if(LibUV_INCLUDE_DIR AND EXISTS "${LibUV_INCLUDE_DIR}/uv-version.h") + file(STRINGS "${LibUV_INCLUDE_DIR}/uv-version.h" _LibUV_H REGEX "${_LibUV_H_REGEX}") +elseif(LibUV_INCLUDE_DIR AND EXISTS "${LibUV_INCLUDE_DIR}/uv.h") + file(STRINGS "${LibUV_INCLUDE_DIR}/uv.h" _LibUV_H REGEX "${_LibUV_H_REGEX}") +else() + set(_LibUV_H "") +endif() +foreach(c MAJOR MINOR PATCH) + if(_LibUV_H MATCHES "#[ \t]*define[ \t]+UV_VERSION_${c}[ \t]+([0-9]+)") + set(_LibUV_VERSION_${c} "${CMAKE_MATCH_1}") + else() + unset(_LibUV_VERSION_${c}) + endif() +endforeach() +if(DEFINED _LibUV_VERSION_MAJOR AND DEFINED _LibUV_VERSION_MINOR) + set(LibUV_VERSION_MAJOR "${_LibUV_VERSION_MAJOR}") + set(LibUV_VERSION_MINOR "${_LibUV_VERSION_MINOR}") + set(LibUV_VERSION "${LibUV_VERSION_MAJOR}.${LibUV_VERSION_MINOR}") + if(DEFINED _LibUV_VERSION_PATCH) + set(LibUV_VERSION_PATCH "${_LibUV_VERSION_PATCH}") + set(LibUV_VERSION "${LibUV_VERSION}.${LibUV_VERSION_PATCH}") + else() + unset(LibUV_VERSION_PATCH) + endif() +else() + set(LibUV_VERSION_MAJOR "") + set(LibUV_VERSION_MINOR "") + set(LibUV_VERSION_PATCH "") + set(LibUV_VERSION "") +endif() +unset(_LibUV_VERSION_MAJOR) +unset(_LibUV_VERSION_MINOR) +unset(_LibUV_VERSION_PATCH) +unset(_LibUV_H_REGEX) +unset(_LibUV_H) + +#----------------------------------------------------------------------------- +include(${CMAKE_CURRENT_LIST_DIR}/../../Modules/FindPackageHandleStandardArgs.cmake) +FIND_PACKAGE_HANDLE_STANDARD_ARGS(LibUV + FOUND_VAR LibUV_FOUND + REQUIRED_VARS LibUV_LIBRARY LibUV_INCLUDE_DIR + VERSION_VAR LibUV_VERSION + ) +set(LIBUV_FOUND ${LibUV_FOUND}) + +#----------------------------------------------------------------------------- +# Provide documented result variables and targets. +if(LibUV_FOUND) + set(LibUV_INCLUDE_DIRS ${LibUV_INCLUDE_DIR}) + set(LibUV_LIBRARIES ${LibUV_LIBRARY}) + if(NOT TARGET LibUV::LibUV) + add_library(LibUV::LibUV UNKNOWN IMPORTED) + set_target_properties(LibUV::LibUV PROPERTIES + IMPORTED_LOCATION "${LibUV_LIBRARY}" + INTERFACE_INCLUDE_DIRECTORIES "${LibUV_INCLUDE_DIRS}" + ) + endif() +endif() diff --git a/Tests/CMakeLists.txt b/Tests/CMakeLists.txt index c119cfdcf..64946500e 100644 --- a/Tests/CMakeLists.txt +++ b/Tests/CMakeLists.txt @@ -1375,6 +1375,10 @@ ${CMake_BINARY_DIR}/bin/cmake -DDIR=dev -P ${CMake_SOURCE_DIR}/Utilities/Release add_subdirectory(FindJsonCpp) endif() + if(CMake_TEST_FindLibUV) + add_subdirectory(FindLibUV) + endif() + if(CMake_TEST_FindLTTngUST) add_subdirectory(FindLTTngUST) endif() diff --git a/Tests/FindLibUV/CMakeLists.txt b/Tests/FindLibUV/CMakeLists.txt new file mode 100644 index 000000000..08aa95847 --- /dev/null +++ b/Tests/FindLibUV/CMakeLists.txt @@ -0,0 +1,10 @@ +add_test(NAME FindLibUV.Test COMMAND + ${CMAKE_CTEST_COMMAND} -C $ + --build-and-test + "${CMake_SOURCE_DIR}/Tests/FindLibUV/Test" + "${CMake_BINARY_DIR}/Tests/FindLibUV/Test" + ${build_generator_args} + --build-project TestFindLibUV + --build-options ${build_options} + --test-command ${CMAKE_CTEST_COMMAND} -V -C $ + ) diff --git a/Tests/FindLibUV/Test/CMakeLists.txt b/Tests/FindLibUV/Test/CMakeLists.txt new file mode 100644 index 000000000..257ddf3cc --- /dev/null +++ b/Tests/FindLibUV/Test/CMakeLists.txt @@ -0,0 +1,17 @@ +cmake_minimum_required(VERSION 3.6) +project(TestFindLibUV C) +include(CTest) + +# CMake does not actually provide FindLibUV publicly. +set(CMAKE_MODULE_PATH ${CMAKE_CURRENT_SOURCE_DIR}/../../../Source/Modules) + +find_package(LibUV REQUIRED) + +add_executable(test_libuv_tgt main.c) +target_link_libraries(test_libuv_tgt LibUV::LibUV) +add_test(NAME test_libuv_tgt COMMAND test_libuv_tgt) + +add_executable(test_libuv_var main.c) +target_include_directories(test_libuv_var PRIVATE ${LibUV_INCLUDE_DIRS}) +target_link_libraries(test_libuv_var PRIVATE ${LibUV_LIBRARIES}) +add_test(NAME test_libuv_var COMMAND test_libuv_var) diff --git a/Tests/FindLibUV/Test/main.c b/Tests/FindLibUV/Test/main.c new file mode 100644 index 000000000..cbd0db3be --- /dev/null +++ b/Tests/FindLibUV/Test/main.c @@ -0,0 +1,7 @@ +#include + +int main() +{ + uv_loop_close(uv_default_loop()); + return 0; +}