From 4d1176759e772e2e4927fb12a0d582f6a934da3a Mon Sep 17 00:00:00 2001
From: bakpaul <paul.baksic@outlook.fr>
Date: Tue, 24 Jun 2025 16:16:17 -0400
Subject: [PATCH] Apply changes regarding modularization of cmake paths

---
 CMakeLists.txt          |  8 +++--
 cmake/environment.cmake | 67 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+), 3 deletions(-)
 create mode 100644 cmake/environment.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4a44792..711854e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,8 @@
 cmake_minimum_required(VERSION 3.22)
 project(Sofa.Qt LANGUAGES CXX)
 
+include(cmake/environment.cmake)
+
 # Detect if component is compiled outside SOFA
 if ("${CMAKE_PROJECT_NAME}" STREQUAL "${PROJECT_NAME}")
     find_package(Sofa.Config REQUIRED)
@@ -373,7 +375,7 @@ endif()
 
 # FFMPEG
 if(FFMPEG_EXEC_FOUND)
-    install(PROGRAMS "${FFMPEG_EXEC_FILE}" DESTINATION bin COMPONENT applications)
+    install(PROGRAMS "${FFMPEG_EXEC_FILE}" DESTINATION ${RUNTIME_OUTPUT_DIRECTORY} COMPONENT applications)
 endif()
 
 find_package(SofaPython3 QUIET)
@@ -387,7 +389,7 @@ set(FFMPEG_EXEC_PATH "${FFMPEG_EXEC_FILE}") # absolute path for build dir, see .
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/etc/${PROJECT_NAME}.ini.in "${CMAKE_BINARY_DIR}/etc/${PROJECT_NAME}.ini")
 set(RESOURCES_DIR "../share/sofa/gui/qt")
 get_filename_component(FFMPEG_EXEC_FILENAME "${FFMPEG_EXEC_FILE}" NAME)
-set(FFMPEG_EXEC_PATH "../bin/${FFMPEG_EXEC_FILENAME}") # relative path for install dir, see .ini file
+set(FFMPEG_EXEC_PATH "../${RUNTIME_OUTPUT_DIRECTORY}/${FFMPEG_EXEC_FILENAME}") # relative path for install dir, see .ini file
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/etc/${PROJECT_NAME}.ini.in "${CMAKE_BINARY_DIR}/etc/installed${PROJECT_NAME}.ini")
 install(FILES "${CMAKE_BINARY_DIR}/etc/installed${PROJECT_NAME}.ini" DESTINATION etc RENAME ${PROJECT_NAME}.ini COMPONENT applications)
 
@@ -404,5 +406,5 @@ sofa_create_package_with_targets(
 # Qt deployment
 if(CMAKE_SYSTEM_NAME STREQUAL Windows)
     include(windeployqt)
-    windeployqt(${PROJECT_NAME} ${CMAKE_BINARY_DIR}/bin bin)
+    windeployqt(${PROJECT_NAME} ${CMAKE_BINARY_DIR}/${RUNTIME_OUTPUT_DIRECTORY} ${RUNTIME_OUTPUT_DIRECTORY})
 endif()
diff --git a/cmake/environment.cmake b/cmake/environment.cmake
new file mode 100644
index 0000000..f3c8d02
--- /dev/null
+++ b/cmake/environment.cmake
@@ -0,0 +1,67 @@
+# CMake modules path, for our FindXXX.cmake modules
+list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
+list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/modules)
+list(APPEND CMAKE_PREFIX_PATH ${PROJECT_BINARY_DIR})
+list(APPEND CMAKE_PREFIX_PATH ${PROJECT_BINARY_DIR}/extlibs)
+
+## Default build type
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+    set(CMAKE_BUILD_TYPE "Release")
+endif()
+
+## Force default install prefix
+if(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
+    set(CMAKE_INSTALL_PREFIX "${CMAKE_BINARY_DIR}/install/${PROJECT_NAME}" CACHE PATH "Install path prefix, prepended onto install directories." FORCE)
+endif()
+message(STATUS "Install prefix: ${CMAKE_INSTALL_PREFIX}")
+
+## Set the output directories globally
+
+## Set the output directories globally
+if(NOT DEFINED CMAKE_ARCHIVE_OUTPUT_DIRECTORY)
+    set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
+endif()
+
+if(NOT DEFINED CMAKE_RUNTIME_OUTPUT_DIRECTORY)
+    set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+endif()
+
+if(NOT DEFINED CMAKE_LIBRARY_OUTPUT_DIRECTORY)
+    if(WIN32)
+        set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+    else()
+        set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib)
+    endif()
+endif()
+
+string(REGEX REPLACE "^${CMAKE_BINARY_DIR}/" "" ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_ARCHIVE_OUTPUT_DIRECTORY} )
+string(REGEX REPLACE "^${CMAKE_BINARY_DIR}/" "" RUNTIME_OUTPUT_DIRECTORY ${CMAKE_RUNTIME_OUTPUT_DIRECTORY} )
+string(REGEX REPLACE "^${CMAKE_BINARY_DIR}/" "" LIBRARY_OUTPUT_DIRECTORY ${CMAKE_LIBRARY_OUTPUT_DIRECTORY} )
+
+## RPATH
+if(UNIX)
+    # RPATH is a field in ELF binaries that is used as a hint by the system
+    # loader to find needed shared libraries.
+    #
+    # In the build directory, cmake creates binaries with absolute paths in
+    # RPATH.  And by default, it strips RPATH from installed binaries.  Here we
+    # use CMAKE_INSTALL_RPATH to set a relative RPATH.  By doing so, we avoid
+    # the need to play with LD_LIBRARY_PATH to get applications to run.
+
+    # see https://cmake.org/Wiki/CMake_RPATH_handling for $ORIGIN doc
+    set(CMAKE_INSTALL_RPATH
+        "$ORIGIN/../lib"
+        "$$ORIGIN/../lib"
+        )
+
+    if(APPLE)
+        set(CMAKE_MACOSX_RPATH ON)
+        list(APPEND CMAKE_INSTALL_RPATH
+            "@loader_path"
+            "@loader_path/../lib"
+            "@executable_path"
+            "@executable_path/../lib"
+            )
+        set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
+    endif()
+endif(UNIX)