CMake: resolve issues using pre-compiled & system libraries for Unix
When LIBDIR existed, searching for system libraries would always first search 'LIBDIR'. This meant "WITH_SYSTEM_*" would still prefer LIBDIR versions of libraries if they exist. The presence of LIBDIR also ignored the setting for WITH_STATIC_LIBS which is now restored to the cached value once pre-compiled libraries have been handled.
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@ -48,6 +48,9 @@ if(NOT DEFINED LIBDIR)
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unset(LIBDIR_CENTOS7_ABI)
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endif()
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# Support restoring this value once pre-compiled libraries have been handled.
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set(WITH_STATIC_LIBS_INIT ${WITH_STATIC_LIBS})
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if(EXISTS ${LIBDIR})
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message(STATUS "Using pre-compiled LIBDIR: ${LIBDIR}")
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@ -541,6 +544,15 @@ add_definitions(-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D_LARGEFILE64_SOURCE
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#
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# Keep last, so indirectly linked libraries don't override our own pre-compiled libs.
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if(EXISTS ${LIBDIR})
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# Clear the prefix path as it causes the `LIBDIR` to override system locations.
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unset(CMAKE_PREFIX_PATH)
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# Since the pre-compiled `LIBDIR` directories have been handled, don't prefer static libraries.
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set(WITH_STATIC_LIBS ${WITH_STATIC_LIBS_INIT})
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endif()
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if(WITH_LZO AND WITH_SYSTEM_LZO)
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find_package_wrapper(LZO)
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if(NOT LZO_FOUND)
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