diff options
| -rw-r--r-- | googlemock/cmake/gmock.pc.in | 5 | ||||
| -rw-r--r-- | googlemock/cmake/gmock_main.pc.in | 5 | ||||
| -rw-r--r-- | googletest/cmake/gtest.pc.in | 5 | ||||
| -rw-r--r-- | googletest/cmake/gtest_main.pc.in | 5 | ||||
| -rw-r--r-- | googletest/docs/pkgconfig.md | 78 |
5 files changed, 86 insertions, 12 deletions
diff --git a/googlemock/cmake/gmock.pc.in b/googlemock/cmake/gmock.pc.in index 08e04547..2ef0fbca 100644 --- a/googlemock/cmake/gmock.pc.in +++ b/googlemock/cmake/gmock.pc.in @@ -1,6 +1,5 @@ -prefix=${pcfiledir}/../.. -libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@ -includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@ +libdir=@CMAKE_INSTALL_FULL_LIBDIR@ +includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@ Name: gmock Description: GoogleMock (without main() function) diff --git a/googlemock/cmake/gmock_main.pc.in b/googlemock/cmake/gmock_main.pc.in index b22fe614..04658fe2 100644 --- a/googlemock/cmake/gmock_main.pc.in +++ b/googlemock/cmake/gmock_main.pc.in @@ -1,6 +1,5 @@ -prefix=${pcfiledir}/../.. -libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@ -includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@ +libdir=@CMAKE_INSTALL_FULL_LIBDIR@ +includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@ Name: gmock_main Description: GoogleMock (with main() function) diff --git a/googletest/cmake/gtest.pc.in b/googletest/cmake/gtest.pc.in index 9aae29e2..e7967ad5 100644 --- a/googletest/cmake/gtest.pc.in +++ b/googletest/cmake/gtest.pc.in @@ -1,6 +1,5 @@ -prefix=${pcfiledir}/../.. -libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@ -includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@ +libdir=@CMAKE_INSTALL_FULL_LIBDIR@ +includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@ Name: gtest Description: GoogleTest (without main() function) diff --git a/googletest/cmake/gtest_main.pc.in b/googletest/cmake/gtest_main.pc.in index 915f2973..fe25d9c7 100644 --- a/googletest/cmake/gtest_main.pc.in +++ b/googletest/cmake/gtest_main.pc.in @@ -1,6 +1,5 @@ -prefix=${pcfiledir}/../.. -libdir=${prefix}/@CMAKE_INSTALL_LIBDIR@ -includedir=${prefix}/@CMAKE_INSTALL_INCLUDEDIR@ +libdir=@CMAKE_INSTALL_FULL_LIBDIR@ +includedir=@CMAKE_INSTALL_FULL_INCLUDEDIR@ Name: gtest_main Description: GoogleTest (with main() function) diff --git a/googletest/docs/pkgconfig.md b/googletest/docs/pkgconfig.md index 6dc06738..117166cf 100644 --- a/googletest/docs/pkgconfig.md +++ b/googletest/docs/pkgconfig.md @@ -139,3 +139,81 @@ export PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig ``` pkg-config will also try to look in `PKG_CONFIG_PATH` to find `gtest_main.pc`. + +### Using pkg-config in a cross-compilation setting + +Pkg-config can be used in a cross-compilation setting too. To do this, let's +assume the final prefix of the cross-compiled installation will be `/usr`, and +your sysroot is `/home/MYUSER/sysroot`. Configure and install GTest using + +``` +mkdir build && cmake -DCMAKE_INSTALL_PREFIX=/usr .. +``` + +Install into the sysroot using `DESTDIR`: + +``` +make -j install DESTDIR=/home/MYUSER/sysroot +``` + +Before we continue, it is recommended to **always** define the following two +variables for pkg-config in a cross-compilation setting: + +``` +export PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=yes +export PKG_CONFIG_ALLOW_SYSTEM_LIBS=yes +``` + +otherwise `pkg-config` will filter `-I` and `-L` flags against standard prefixes +such as `/usr` (see https://bugs.freedesktop.org/show_bug.cgi?id=28264#c3 for +reasons why this stripping needs to occur usually). + +If you look at the generated pkg-config file, it will look something like + +``` +libdir=/usr/lib64 +includedir=/usr/include + +Name: gtest +Description: GoogleTest (without main() function) +Version: 1.10.0 +URL: https://github.com/google/googletest +Libs: -L${libdir} -lgtest -lpthread +Cflags: -I${includedir} -DGTEST_HAS_PTHREAD=1 -lpthread +``` + +Notice that the sysroot is not included in `libdir` and `includedir`! If you try +to run `pkg-config` with the correct +`PKG_CONFIG_LIBDIR=/home/MYUSER/sysroot/usr/lib64/pkgconfig` against this `.pc` +file, you will get + +``` +$ pkg-config --cflags gtest +-DGTEST_HAS_PTHREAD=1 -lpthread -I/usr/include +$ pkg-config --libs gtest +-L/usr/lib64 -lgtest -lpthread +``` + +which is obviously wrong and points to the `CBUILD` and not `CHOST` root. In +order to use this in a cross-compilation setting, we need to tell pkg-config to +inject the actual sysroot into `-I` and `-L` variables. Let us now tell +pkg-config about the actual sysroot + +``` +export PKG_CONFIG_DIR= +export PKG_CONFIG_SYSROOT_DIR=/home/MYUSER/sysroot +export PKG_CONFIG_LIBDIR=${PKG_CONFIG_SYSROOT_DIR}/usr/lib64/pkgconfig +``` + +and running `pkg-config` again we get + +``` +$ pkg-config --cflags gtest +-DGTEST_HAS_PTHREAD=1 -lpthread -I/home/MYUSER/sysroot/usr/include +$ pkg-config --libs gtest +-L/home/MYUSER/sysroot/usr/lib64 -lgtest -lpthread +``` + +which contains the correct sysroot now. For a more comprehensive guide to also +including `${CHOST}` in build system calls, see the excellent tutorial by Diego +Elio Pettenò: https://autotools.io/pkgconfig/cross-compiling.html |