Merge pull request #446 from nim65s/cmake

CMake details

CHANGELOG.md

@@ -6,9 +6,13 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 
+### Added
+- Allow use of installed JRL-cmakemodule ([#446](https://github.com/stack-of-tasks/eigenpy/pull/446)
+
 ### Fixed
 - Fix unit test build in C++11 ([#442](https://github.com/stack-of-tasks/eigenpy/pull/442))
 - Fix unit test function signature [#443](https://github.com/stack-of-tasks/eigenpy/pull/443))
+- Fix CMake export ([#446](https://github.com/stack-of-tasks/eigenpy/pull/446)
 
 ## [3.4.0] - 2024-02-26
 

CMakeLists.txt

@@ -14,11 +14,23 @@ set(PROJECT_COMPATIBILITY_VERSION AnyNewerVersion)
 
 # Check if the submodule cmake have been initialized
 set(JRL_CMAKE_MODULES "${CMAKE_CURRENT_LIST_DIR}/cmake")
-if(NOT EXISTS "${CMAKE_SOURCE_DIR}/cmake/base.cmake")
-  if(${CMAKE_VERSION} VERSION_LESS "3.14.0")
+if(EXISTS "${JRL_CMAKE_MODULES}/base.cmake")
+  message(STATUS "JRL cmakemodules found in 'cmake/' git submodule")
+else()
+  find_package(jrl-cmakemodules QUIET CONFIG)
+  if(jrl-cmakemodules_FOUND)
+    get_property(
+      JRL_CMAKE_MODULES
+      TARGET jrl-cmakemodules::jrl-cmakemodules
+      PROPERTY INTERFACE_INCLUDE_DIRECTORIES)
+    message(STATUS "JRL cmakemodules found on system at ${JRL_CMAKE_MODULES}")
+  elseif(${CMAKE_VERSION} VERSION_LESS "3.14.0")
     message(
       FATAL_ERROR
-        "\nPlease run the following command first:\ngit submodule update --init\n"
+        "\nCan't find jrl-cmakemodules. Please either:\n"
+        "  - use git submodule: 'git submodule update --init'\n"
+        "  - or install https://github.com/jrl-umi3218/jrl-cmakemodules\n"
+        "  - or upgrade your CMake version to >= 3.14 to allow automatic fetching\n"
     )
   else()
     message(STATUS "JRL cmakemodules not found. Let's fetch it.")
@@ -297,7 +309,7 @@ add_library(${PROJECT_NAME} SHARED ${${PROJECT_NAME}_SOURCES}
 target_include_directories(
   ${PROJECT_NAME} SYSTEM
   PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}/include>
-         $<INSTALL_INTERFACE:include>)
+         $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>)
 
 modernize_target_link_libraries(
   ${PROJECT_NAME}