From a8b09e8ac86cc8e7cc8909030f14d482da4d2f96 Mon Sep 17 00:00:00 2001
From: mpa <mpa@opencascade.com>
Date: Tue, 5 Nov 2013 12:41:48 +0000
Subject: [PATCH] CMake: improved reloading of dependent CMake targets in
 Config file to account for COMPONENTS.

---
 CMakeLists.txt            |  4 ++++
 SalomeGEOMConfig.cmake.in | 36 +++++++++++++++++++++++-------------
 2 files changed, 27 insertions(+), 13 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c19a77b3c..3d6966355 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -272,6 +272,10 @@ SET(VTK_ROOT_DIR "${VTK_ROOT_DIR}")
 SET(OPENCV_ROOT_DIR "${OPENCV_ROOT_DIR}")
 
 SET(CONF_INCLUDE_DIRS "${PROJECT_SOURCE_DIR}/include" "${PROJECT_BINARY_DIR}/include")
+
+# Build variables that will be expanded when configuring Salome<MODULE>Config.cmake:
+SALOME_CONFIGURE_PREPARE(OpenCV CAS VTK)
+                         
 CONFIGURE_PACKAGE_CONFIG_FILE(${PROJECT_NAME}Config.cmake.in
     ${PROJECT_BINARY_DIR}/${PROJECT_NAME}Config.cmake
     INSTALL_DESTINATION "${SALOME_INSTALL_CMAKE_LOCAL}"
diff --git a/SalomeGEOMConfig.cmake.in b/SalomeGEOMConfig.cmake.in
index 232ca3f8a..696ebe291 100644
--- a/SalomeGEOMConfig.cmake.in
+++ b/SalomeGEOMConfig.cmake.in
@@ -77,22 +77,32 @@ ENDIF()
 # For all prerequisites, load the corresponding targets if the package was used 
 # in CONFIG mode. This ensures dependent projects link correctly
 # without having to set LD_LIBRARY_PATH:
-
-SET(_PREREQ OpenCV CAS VTK)
-SET(_PREREQ_CONFIG_DIR "@OpenCV_DIR@" "@CAS_DIR@" "@VTK_DIR@")
+SET(_PREREQ @_PREREQ_LIST@)
+SET(_PREREQ_CONFIG_DIR @_PREREQ_DIR_LIST@)
+SET(_PREREQ_COMPONENTS "@_PREREQ_COMPO_LIST@")
 LIST(LENGTH _PREREQ_CONFIG_DIR _list_len)
-# Another CMake stupidity - FOREACH(... RANGE r) generates r+1 numbers ...
-MATH(EXPR _range "${_list_len}-1")
-FOREACH(_p RANGE ${_range})
-  LIST(GET _PREREQ            ${_p} _pkg    )
-  LIST(GET _PREREQ_CONFIG_DIR ${_p} _pkg_dir)
-  IF(_pkg_dir)
-     MESSAGE(STATUS "===> Reloading targets from ${_pkg} ...")
-     FIND_PACKAGE(${_pkg} REQUIRED NO_MODULE 
+IF(NOT _list_len EQUAL 0)
+  # Another CMake stupidity - FOREACH(... RANGE r) generates r+1 numbers ...
+  MATH(EXPR _range "${_list_len}-1")
+  FOREACH(_p RANGE ${_range})  
+    LIST(GET _PREREQ            ${_p} _pkg    )
+    LIST(GET _PREREQ_CONFIG_DIR ${_p} _pkg_dir)
+    LIST(GET _PREREQ_COMPONENTS ${_p} _pkg_compo)
+    MESSAGE(STATUS "===> Reloading targets from ${_pkg} ...")
+    IF(NOT _pkg_compo)
+      FIND_PACKAGE(${_pkg} REQUIRED NO_MODULE 
           PATHS "${_pkg_dir}" 
           NO_DEFAULT_PATH)
-  ENDIF()
-ENDFOREACH()
+    ELSE()
+      STRING(REPLACE "," ";" _compo_lst "${_pkg_compo}")
+      MESSAGE(STATUS "===> (components: ${_pkg_compo})")
+      FIND_PACKAGE(${_pkg} REQUIRED NO_MODULE
+          COMPONENTS ${_compo_lst} 
+          PATHS "${_pkg_dir}"
+          NO_DEFAULT_PATH)
+    ENDIF()
+  ENDFOREACH()
+ENDIF()
 
 # Installation directories
 SET(SALOME_INSTALL_BINS "@SALOME_INSTALL_BINS@")
-- 
2.39.2