install includes only if we build libs

CMakeLists.txt

@@ -79,7 +79,7 @@ option(ENABLE_WRAP_PYTHON "Build Python wrappers" OFF)
 
 set(GMSH_MAJOR_VERSION 2)
 set(GMSH_MINOR_VERSION 7)
-set(GMSH_PATCH_VERSION 1)
+set(GMSH_PATCH_VERSION 2)
 set(GMSH_EXTRA_VERSION "" CACHE STRING "Gmsh extra version string")
 
 set(GMSH_VERSION "${GMSH_MAJOR_VERSION}.${GMSH_MINOR_VERSION}")
@@ -1280,7 +1280,9 @@ if(ENABLE_BUILD_SHARED OR ENABLE_BUILD_DYNAMIC)
 endif(ENABLE_BUILD_SHARED OR ENABLE_BUILD_DYNAMIC)
 
 install(FILES ${ONELAB_PY} DESTINATION ${GMSH_BIN})
-install(FILES ${GMSH_API} DESTINATION include/gmsh)
+if(ENABLE_BUILD_LIB OR ENABLE_BUILD_SHARED OR ENABLE_BUILD_DYNAMIC)
+  install(FILES ${GMSH_API} DESTINATION include/gmsh)
+endif(ENABLE_BUILD_LIB OR ENABLE_BUILD_SHARED OR ENABLE_BUILD_DYNAMIC)
 install(FILES ${WELCOME_FILE} DESTINATION ${GMSH_DOC} RENAME README.txt)
 install(FILES ${LICENSE_FILE} DESTINATION ${GMSH_DOC})
 install(FILES ${CREDITS_FILE} DESTINATION ${GMSH_DOC})