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Merge pull request #1197 from SoapGentoo/pkgconfig

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Add support for pkgconfig
This commit is contained in:
Gennadiy Civil 2017-08-14 14:33:41 -04:00 committed by GitHub
commit e0fc65c5fb
9 changed files with 229 additions and 4 deletions
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19
googlemock/CMakeLists.txt
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@ -37,7 +37,12 @@ endif()
# as ${gmock_SOURCE_DIR} and to the root binary directory as
# ${gmock_BINARY_DIR}.
# Language "C" is required for find_package(Threads).
project(gmock CXX C)
if (CMAKE_VERSION VERSION_LESS 3.0)
project(gmock CXX C)
else()
cmake_policy(SET CMP0048 NEW)
project(gmock VERSION 1.9.0 LANGUAGES CXX C)
endif()
cmake_minimum_required(VERSION 2.6.4)
if (COMMAND set_up_hermetic_build)
@ -110,6 +115,18 @@ if(INSTALL_GMOCK)
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
install(DIRECTORY ${gmock_SOURCE_DIR}/include/gmock
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
# configure and install pkgconfig files
configure_file(
cmake/gmock.pc.in
"${CMAKE_BINARY_DIR}/gmock.pc"
@ONLY)
configure_file(
cmake/gmock_main.pc.in
"${CMAKE_BINARY_DIR}/gmock_main.pc"
@ONLY)
install(FILES "${CMAKE_BINARY_DIR}/gmock.pc" "${CMAKE_BINARY_DIR}/gmock_main.pc"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
endif()
########################################################################

9
googlemock/cmake/gmock.pc.in Normal file
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@ -0,0 +1,9 @@
libdir=@CMAKE_INSTALL_FULL_LIBDIR@
includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
Name: gmock
Description: GoogleMock (without main() function)
Version: @PROJECT_VERSION@
URL: https://github.com/google/googletest
Libs: -L${libdir} -lgmock @CMAKE_THREAD_LIBS_INIT@
Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@ @CMAKE_THREAD_LIBS_INIT@

9
googlemock/cmake/gmock_main.pc.in Normal file
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@ -0,0 +1,9 @@
libdir=@CMAKE_INSTALL_FULL_LIBDIR@
includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
Name: gmock_main
Description: GoogleMock (with main() function)
Version: @PROJECT_VERSION@
URL: https://github.com/google/googletest
Libs: -L${libdir} -lgmock_main @CMAKE_THREAD_LIBS_INIT@
Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@ @CMAKE_THREAD_LIBS_INIT@

19
googletest/CMakeLists.txt
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@ -44,7 +44,12 @@ endif()
# as ${gtest_SOURCE_DIR} and to the root binary directory as
# ${gtest_BINARY_DIR}.
# Language "C" is required for find_package(Threads).
project(gtest CXX C)
if (CMAKE_VERSION VERSION_LESS 3.0)
project(gtest CXX C)
else()
cmake_policy(SET CMP0048 NEW)
project(gtest VERSION 1.9.0 LANGUAGES CXX C)
endif()
cmake_minimum_required(VERSION 2.6.4)
if (COMMAND set_up_hermetic_build)
@ -109,6 +114,18 @@ if(INSTALL_GTEST)
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR})
install(DIRECTORY ${gtest_SOURCE_DIR}/include/gtest
DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
# configure and install pkgconfig files
configure_file(
cmake/gtest.pc.in
"${CMAKE_BINARY_DIR}/gtest.pc"
@ONLY)
configure_file(
cmake/gtest_main.pc.in
"${CMAKE_BINARY_DIR}/gtest_main.pc"
@ONLY)
install(FILES "${CMAKE_BINARY_DIR}/gtest.pc" "${CMAKE_BINARY_DIR}/gtest_main.pc"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig")
endif()
########################################################################

9
googletest/cmake/gtest.pc.in Normal file
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@ -0,0 +1,9 @@
libdir=@CMAKE_INSTALL_FULL_LIBDIR@
includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
Name: gtest
Description: GoogleTest (without main() function)
Version: @PROJECT_VERSION@
URL: https://github.com/google/googletest
Libs: -L${libdir} -lgtest @CMAKE_THREAD_LIBS_INIT@
Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@ @CMAKE_THREAD_LIBS_INIT@

10
googletest/cmake/gtest_main.pc.in Normal file
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@ -0,0 +1,10 @@
libdir=@CMAKE_INSTALL_FULL_LIBDIR@
includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@
Name: gtest_main
Description: GoogleTest (with main() function)
Version: @PROJECT_VERSION@
URL: https://github.com/google/googletest
Requires: gtest
Libs: -L${libdir} -lgtest_main @CMAKE_THREAD_LIBS_INIT@
Cflags: -I${includedir} @GTEST_HAS_PTHREAD_MACRO@ @CMAKE_THREAD_LIBS_INIT@

6
googletest/cmake/internal_utils.cmake
View File

@ -50,6 +50,7 @@ macro(config_compiler_and_linker)
# instead, we use windows threading primitives
if (NOT gtest_disable_pthreads AND NOT MINGW)
# Defines CMAKE_USE_PTHREADS_INIT and CMAKE_THREAD_LIBS_INIT.
set(THREADS_PREFER_PTHREAD_FLAG ON)
find_package(Threads)
endif()
@ -126,10 +127,11 @@ macro(config_compiler_and_linker)
endif()
if (CMAKE_USE_PTHREADS_INIT) # The pthreads library is available and allowed.
set(cxx_base_flags "${cxx_base_flags} -DGTEST_HAS_PTHREAD=1")
set(GTEST_HAS_PTHREAD_MACRO "-DGTEST_HAS_PTHREAD=1")
else()
set(cxx_base_flags "${cxx_base_flags} -DGTEST_HAS_PTHREAD=0")
set(GTEST_HAS_PTHREAD_MACRO "-DGTEST_HAS_PTHREAD=0")
endif()
set(cxx_base_flags "${cxx_base_flags} ${GTEST_HAS_PTHREAD_MACRO}")
# For building gtest's own tests and samples.
set(cxx_exception "${CMAKE_CXX_FLAGS} ${cxx_base_flags} ${cxx_exception_flags}")

6
googletest/docs/FAQ.md
View File

@ -1060,6 +1060,12 @@ TEST_F(CoolTest, DoSomething) {
If you try to build Google Test's Xcode project with Xcode 4.0 or later, you may encounter an error message that looks like
"Missing SDK in target gtest\_framework: /Developer/SDKs/MacOSX10.4u.sdk". That means that Xcode does not support the SDK the project is targeting. See the Xcode section in the [README](../README.md) file on how to resolve this.
## How do I easily discover the flags needed for GoogleTest? ##
GoogleTest (and GoogleMock) now support discovering all necessary flags using pkg-config.
See the [pkg-config guide](Pkgconfig.md) on how you can easily discover all compiler and
linker flags using pkg-config.
## My question is not covered in your FAQ! ##
If you cannot find the answer to your question in this FAQ, there are

146
googletest/docs/Pkgconfig.md Normal file
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@ -0,0 +1,146 @@
## Using GoogleTest from various build systems ##
GoogleTest comes with pkg-config files that can be used to determine all
necessary flags for compiling and linking to GoogleTest (and GoogleMock).
Pkg-config is a standardised plain-text format containing
* the includedir (-I) path
* necessary macro (-D) definitions
* further required flags (-pthread)
* the library (-L) path
* the library (-l) to link to
All current build systems support pkg-config in one way or another. For
all examples here we assume you want to compile the sample
`samples/sample3_unittest.cc`.
### CMake ###
Using `pkg-config` in CMake is fairly easy:
```
cmake_minimum_required(VERSION 3.0)
cmake_policy(SET CMP0048 NEW)
project(my_gtest_pkgconfig VERSION 0.0.1 LANGUAGES CXX)
find_package(PkgConfig)
pkg_search_module(GTEST REQUIRED gtest_main)
add_executable(testapp samples/sample3_unittest.cc)
target_link_libraries(testapp ${GTEST_LDFLAGS})
target_compile_options(testapp PUBLIC ${GTEST_CFLAGS})
include(CTest)
add_test(first_and_only_test testapp)
```
It is generally recommended that you use `target_compile_options` + `_CFLAGS`
over `target_include_directories` + `_INCLUDE_DIRS` as the former includes not
just -I flags (GoogleTest might require a macro indicating to internal headers
that all libraries have been compiled with threading enabled. In addition,
GoogleTest might also require `-pthread` in the compiling step, and as such
splitting the pkg-config `Cflags` variable into include dirs and macros for
`target_compile_definitions()` might still miss this). The same recommendation
goes for using `_LDFLAGS` over the more commonplace `_LIBRARIES`, which
happens to discard `-L` flags and `-pthread`.
### Autotools ###
Finding GoogleTest in Autoconf and using it from Automake is also fairly easy:
In your `configure.ac`:
```
AC_PREREQ([2.69])
AC_INIT([my_gtest_pkgconfig], [0.0.1])
AC_CONFIG_SRCDIR([samples/sample3_unittest.cc])
AC_PROG_CXX
PKG_CHECK_MODULES([GTEST], [gtest_main])
AM_INIT_AUTOMAKE([foreign subdir-objects])
AC_CONFIG_FILES([Makefile])
AC_OUTPUT
```
and in your `Makefile.am`:
```
check_PROGRAMS = testapp
TESTS = $(check_PROGRAMS)
testapp_SOURCES = samples/sample3_unittest.cc
testapp_CXXFLAGS = $(GTEST_CFLAGS)
testapp_LDADD = $(GTEST_LIBS)
```
### Meson ###
Meson natively uses pkgconfig to query dependencies:
```
project('my_gtest_pkgconfig', 'cpp', version : '0.0.1')
gtest_dep = dependency('gtest_main')
testapp = executable(
'testapp',
files(['samples/sample3_unittest.cc']),
dependencies : gtest_dep,
install : false)
test('first_and_only_test', testapp)
```
### Plain Makefiles ###
Since `pkg-config` is a small Unix command-line utility, it can be used
in handwritten `Makefile`s too:
```
GTEST_CFLAGS = `pkg-config --cflags gtest_main`
GTEST_LIBS = `pkg-config --libs gtest_main`
.PHONY: tests all
tests: all
./testapp
all: testapp
testapp: testapp.o
$(CXX) $(CXXFLAGS) $(LDFLAGS) $< -o $@ $(GTEST_LIBS)
testapp.o: samples/sample3_unittest.cc
$(CXX) $(CPPFLAGS) $(CXXFLAGS) $< -c -o $@ $(GTEST_CFLAGS)
```
### Help! pkg-config can't find GoogleTest! ###
Let's say you have a `CMakeLists.txt` along the lines of the one in this
tutorial and you try to run `cmake`. It is very possible that you get a
failure along the lines of:
```
-- Checking for one of the modules 'gtest_main'
CMake Error at /usr/share/cmake/Modules/FindPkgConfig.cmake:640 (message):
None of the required 'gtest_main' found
```
These failures are common if you installed GoogleTest yourself and have not
sourced it from a distro or other package manager. If so, you need to tell
pkg-config where it can find the `.pc` files containing the information.
Say you installed GoogleTest to `/usr/local`, then it might be that the
`.pc` files are installed under `/usr/local/lib64/pkgconfig`. If you set
```
export PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig
```
pkg-config will also try to look in `PKG_CONFIG_PATH` to find `gtest_main.pc`.