add first version of FindLPSolve

finders/FindLPSolve.cmake

+set(CMAKE_FIND_DEBUG_MODE TRUE)
+
+set(LPSOLVE_DIR $ENV{LPSOLVE_DIR} CACHE PATH "lpsolve directory (contain include/lp_lib.h).")
+
+find_path(LPSOLVE_INCLUDE_DIR
+          NAMES lp_lib.h
+          PATHS ${LPSOLVE_DIR}
+                ${LPSOLVE_DIR}/include
+                /usr/local/include
+                /usr/include
+                ${VS_SEARCH_PATH}/lpsolve-5.5.2.11/include
+          )
+          
+find_library(LPSOLVE_LIBRARY
+             NAMES liblpsolve55
+             HINTS ${LPSOLVE_DIR}
+                   ${LPSOLVE_DIR}/lib
+                   ${VS_SEARCH_PATH}/lpsolve-5.5.2.11/lib
+             PATHS /usr/local/lib
+                   /usr/lib
+            )
+            
+
+include(FindPackageHandleStandardArgs)
+find_package_handle_standard_args(LPSOLVE DEFAULT_MSG LPSOLVE_INCLUDE_DIR LPSOLVE_LIBRARY)
+
+if(LPSOLVE_FOUND AND NOT TARGET lpsolve::lpsolve)
+    add_library(lpsolve::lpsolve INTERFACE IMPORTED)
+    target_include_directories(lpsolve::lpsolve INTERFACE ${LPSOLVE_INCLUDE_DIR})
+    target_link_libraries(lpsolve::lpsolve INTERFACE ${LPSOLVE_LIBRARY})
+endif()
+
+mark_as_advanced(LPSOLVE_INCLUDE_DIR)
+mark_as_advanced(LPSOLVE_LIBRARY)
+
+set(CMAKE_FIND_DEBUG_MODE FALSE)
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