How to enable cmake to exclude a subdirectory from install?

问题

I have been trying to build RPM packages for libc++ 3.3 on a RHEL 6.4 box. I need both static and shared libraries. So, I learned some basics of cmake and then modified the bundled CMakeList.txt. Got that part to work.

But since in RHEL 6.x, all 64-bit libraries should go to /usr/lib64 instead of /usr/lib, I have been attempting to use the following to get the job done:

(A) During building, I use

SET(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX})

to have all library files (*.so* and *.a) located in lib64 rather than lib.

(B) Using a ADD_LIBRARY... command as shown below

ADD_LIBRARY(c++ STATIC ...

together with

set_target_properties(c++ PROPERTIES
   ARCHIVE_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX})
   INSTALL(TARGETS c++ 
         ARCHIVE DESTINATION lib${LIB_SUFFIX})

to get the static library installed in /usr/lib64.

(C) In addition, with

INSTALL(FILES ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX}/libc++.so DESTINATION lib${LIB_SUFFIX})
INSTALL(FILES ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX}/libc++.so.1 DESTINATION lib${LIB_SUFFIX})
INSTALL(FILES ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX}/libc++.so.1.0 DESTINATION lib${LIB_SUFFIX})

to have shared libary also installed in /usr/lib64 too.

But a copy of the shared library is still installed in /usr/lib in the resulting RPM. How can I prevent it?

If I were to write a RPM spec file, the _libdir macro automatically handles this. With cmake, given the fact that I am still new to it, I would appreciate a hint/pointer as to the right directive to use.

回答1:

Actually, with a helpful person in the cmake mailing list, I am now able to rid of the %dir /usr/lib in the generated spec file. It's actually quite simple: just cd to $CMAKE_SOURCE_DIR/lib and edit the CMakeLists.txt there. Append ${LIB_SUFFIX} to the two install DESTINATIONs. Regenerate the Makefile in the build subdirectory, and then make && make package. All library files go into /usr/lib64 as desired.

回答2:

What I can see:

1) There's a missing space in ARCHIVE_OUTPUT_DIRECTORY${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX}), should be ARCHIVE_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX})

2) When are your .so files going to be build if you use ADD_LIBRARY(c++ STATIC ...?

来源：https://stackoverflow.com/questions/17894736/how-to-enable-cmake-to-exclude-a-subdirectory-from-install