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## Detect lpsolve
INCLUDE(CheckCXXSourceCompiles)
## first, search the headers
OPTION(LPSOLVE_REQUIRED "Abort if lpsolve cannot be found" OFF)
IF (USE_LPSOLVE)
SET(LPSOLVE_INCLUDE_DIR "" CACHE STRING "Full path to the lpsolve headers")
MARK_AS_ADVANCED(LPSOLVE_INCLUDE_DIR)
SET(LPSOLVE_LIBRARIES "" CACHE STRING "Full path to the lpsolve55 library (including the library)")
MARK_AS_ADVANCED(LPSOLVE_LIBRARIES)
SET(LPSOLVE_INCLUDE_TRIAL_PATH
/sw/include
/usr/include
/usr/local/include
/opt/include
/opt/local/include
)
FIND_PATH(LPSOLVE_INCLUDE_PATH lpsolve/lp_lib.h ${LPSOLVE_INCLUDE_PATH} ${LPSOLVE_INCLUDE_TRIAL_PATH})
IF (LPSOLVE_INCLUDE_PATH)
STRING(REGEX REPLACE "lpsolve/*$" "" LPSOLVE_INCLUDE_PATH ${LPSOLVE_INCLUDE_PATH})
SET(LPSOLVE_INCLUDE_DIR ${LPSOLVE_INCLUDE_PATH} CACHE STRING "Full path to the lpsolve headers" FORCE)
INCLUDE_DIRECTORIES(${LPSOLVE_INCLUDE_DIR})
GET_FILENAME_COMPONENT(LPSOLVE_INSTALL_BASE_PATH ${LPSOLVE_INCLUDE_DIR} PATH)
SET(LPSOLVE_LIB_TRIALPATH
${LPSOLVE_INSTALL_BASE_PATH}/lib
/usr/lib/
/usr/local/lib
/opt/lib
)
FIND_LIBRARY(TMP_LPSOLVE_LIBRARIES
NAMES lpsolve55
PATHS ${LPSOLVE_LIBRARIES} ${LPSOLVE_LIB_TRIALPATH}
PATH_SUFFIXES lp_solve)
SET(LPSOLVE_LIBRARIES ${TMP_LPSOLVE_LIBRARIES} CACHE STRING "Full path to the lpsolve55 library (including the library)" FORCE)
IF (LPSOLVE_LIBRARIES)
SET(LPSOLVE_FOUND TRUE)
## Try to find out if lpsolve can link standalone
SET(LPSOLVE_TRY_CODE "#include <lpsolve/lp_lib.h>
int main(int /*argc*/, char** /*argv*/)
{
int major, minor, release, build;
lp_solve_version(&major, &minor, &release, &build);
return 0;
}")
SET(CMAKE_REQUIRED_INCLUDES ${LPSOLVE_INCLUDE_DIR})
SET(CMAKE_REQUIRED_LIBRARIES ${LPSOLVE_LIBRARIES})
CHECK_CXX_SOURCE_COMPILES("${LPSOLVE_TRY_CODE}" LPSOLVE_LINKS_ALONE)
SET(CMAKE_REQUIRED_LIBRARIES "")
SET(CMAKE_REQUIRED_INCLUDES "")
## Try to find out if lpsolve can link with some extra libs
IF (NOT LPSOLVE_LINKS_ALONE)
FIND_LIBRARY(LPSOLVE_LIB_DL "dl")
FIND_LIBRARY(LPSOLVE_LIB_COLAMD "colamd")
IF (LPSOLVE_LIB_DL)
LIST(APPEND LPSOLVE_LIBRARIES "${LPSOLVE_LIB_DL}")
ENDIF()
IF (LPSOLVE_LIB_COLAMD)
LIST(APPEND LPSOLVE_LIBRARIES "${LPSOLVE_LIB_COLAMD}")
ENDIF()
SET(CMAKE_REQUIRED_LIBRARIES ${LPSOLVE_LIBRARIES})
CHECK_CXX_SOURCE_COMPILES("${LPSOLVE_TRY_CODE}" LPSOLVE_LINKS_WITH_EXTRA_LIBS)
SET(CMAKE_REQUIRED_LIBRARIES "")
IF (NOT LPSOLVE_LINKS_WITH_EXTRA_LIBS)
MESSAGE(STATUS "Could not link against lpsolve55!")
ENDIF()
ENDIF()
ENDIF()
ENDIF()
IF (LPSOLVE_LINKS_ALONE OR LPSOLVE_LINKS_WITH_EXTRA_LIBS)
SET(LPSOLVE_LINKS TRUE)
ENDIF()
INCLUDE(FindPackageHandleStandardArgs)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(LPSolve DEFAULT_MSG
LPSOLVE_LIBRARIES
LPSOLVE_INCLUDE_PATH
LPSOLVE_LINKS
)
ENDIF()
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