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Always cache libconfig++ flags; tell user if pkg-config could not be found.

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Previously, it was not clear to the user if pkg-config detection failed, leading to surprises if libconfig++ actually was present on the system.

The LIBCONFIG* variables are now always cached so that they can conveniently be set from ccmake/cmake-gui.
This commit is contained in:
David Nadlinger
2012-06-02 15:43:14 +02:00
parent 5459135aa5
commit 96b7fb6336
1 changed files with 7 additions and 6 deletions
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13
CMakeLists.txt
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@@ -27,19 +27,20 @@ find_package(LLVM 3.0 EXACT REQUIRED
include(FindPkgConfig)
if(PKG_CONFIG_FOUND)
pkg_search_module(LIBCONFIGPP libconfig++)
if(NOT LIBCONFIGPP_FOUND)
set(LIBCONFIG_CXXFLAGS "" CACHE STRING "libconfig++ compiler flags")
set(LIBCONFIG_LDFLAGS "" CACHE STRING "libconfig++ linker flags")
else(NOT LIBCONFIGPP_FOUND)
if(LIBCONFIGPP_FOUND)
set(LIBCONFIG_CXXFLAGS ${LIBCONFIGPP_CFLAGS} CACHE STRING "libconfig++ compiler flags")
set(LIBCONFIG_LDFLAGS ${LIBCONFIGPP_LDFLAGS} CACHE STRING "libconfig++ linker flags")
endif(NOT LIBCONFIGPP_FOUND)
endif()
else()
message(WARNING "pkg-config not found. libconfig++ options cannot be detected, you might need to set them manually.")
endif()
# libconfig++ is actually a required dependency, but has never been defined as
# one – maybe there was a problem with the auto detection once.
if (NOT LIBCONFIGPP_FOUND)
message(WARNING "libconfig++ not found. If compilation fails but the library is installed, consider manually setting the LIBCONFIG_CXXFLAGS and LIBCONFIG_LDFLAGS CMake variables.")
set(LIBCONFIG_CXXFLAGS "" CACHE STRING "libconfig++ compiler flags")
set(LIBCONFIG_LDFLAGS "" CACHE STRING "libconfig++ linker flags")
message(WARNING "libconfig++ not found. If compilation fails but the library is installed, consider manually setting the LIBCONFIG_CXXFLAGS and LIBCONFIG_LDFLAGS CMake variables.")
endif()
#