ensure correct cmake script argument (#169)

When running a build in a scenario with multiple paths in
CMAKE_MODULE_PATH, we aren't actually running the git-version script.
This happens because we are APPENDing our own module path to the
existing setting.

Instead of relying on the contents of CMAKE_MODULE_PATH, create a
variable that is dedicated to our own location, and use that to specify
the git-version script.

Signed-off-by: Frans Klaver <frans.klaver@vislink.com>
Co-authored-by: Frans Klaver <frans.klaver@vislink.com>

CMakeLists.txt

@@ -8,7 +8,8 @@ project (lpac
 set(CMAKE_C_STANDARD 99)
 set(CMAKE_C_STANDARD_REQUIRED ON)
 
-list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
+set(LPAC_CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/cmake")
+list(APPEND CMAKE_MODULE_PATH ${LPAC_CMAKE_MODULE_PATH})
 
 # add_compile_options(-Wall -Wextra -Wpedantic)
 

src/CMakeLists.txt

@@ -21,7 +21,7 @@ add_custom_target(version
     -D SRC=${CMAKE_CURRENT_SOURCE_DIR}/version.h.in
     -D DST=${CMAKE_CURRENT_SOURCE_DIR}/version.h
     -D GIT_EXECUTABLE=${GIT_EXECUTABLE}
-    -P ${CMAKE_MODULE_PATH}/git-version.cmake
+    -P ${LPAC_CMAKE_MODULE_PATH}/git-version.cmake
 )
 add_dependencies(lpac version)
 set_target_properties(lpac PROPERTIES