try to find Gmsh lib in standard directories first, before testing the...

try to find Gmsh lib in standard directories first, before testing the hardcoded path and the env variable

CMakeLists.txt

@@ -28,10 +28,24 @@ set(CMAKE_MODULE_PATH "${HIP_PATH}/cmake" ${CMAKE_MODULE_PATH})
 find_package(Eigen3 REQUIRED)
 set(LINK_LIBS ${LINK_LIBS} Eigen3::Eigen)
 
+find_library(GMSH_LIB gmsh)
+find_path(GMSH_INC gmsh.h)
+if(GMSH_LIB AND GMSH_INC)
+    set(LINK_LIBS ${LINK_LIBS} ${GMSH_LIB})
+    include_directories(${GMSH_INC})
+else()
   set(GMSH_DIR "/opt/uliege/gmsh" CACHE PATH "GMSH install path")
   if (DEFINED ENV{GMSH_DIR})
     set (GMSH_DIR $ENV{GMSH_DIR})
   endif()
+  if (GMSH_DIR STREQUAL "" OR NOT EXISTS ${GMSH_DIR})
+      message(FATAL_ERROR "GMSH not found")
+  else()
+      set(LINK_LIBS ${LINK_LIBS} gmsh)
+      include_directories(${GMSH_DIR}/include)
+      link_directories(${GMSH_DIR}/lib)
+  endif()
+endif()
 
 find_package(SILO)
 if (SILO_FOUND)
@@ -47,23 +61,6 @@ set(SOL2_BUILD_LUA OFF CACHE BOOL "Override sol2 build lua option")
 add_subdirectory(contrib/sol2)
 include_directories(contrib/sol2/include)
 
-######################################################################
-## Set GMSH paths
-
-if (GMSH_DIR STREQUAL "" OR NOT EXISTS ${GMSH_DIR})
-    message(FATAL_ERROR "GMSH not found")
-else()
-    set(GMSH_INCLUDE ${GMSH_DIR}/include)
-    set(GMSH_LIB ${GMSH_DIR}/lib)
-    set(LINK_LIBS ${LINK_LIBS} gmsh)
-endif()
-
-include_directories(${GMSH_INCLUDE})
-link_directories(${GMSH_LIB})
-
-
-
-
 ######################################################################
 ## Use or not use GPU solvers
 option(OPT_ENABLE_GPU_SOLVER "Enable GPU solvers" OFF)