From 0c83e37b07b3d910543bdcc444fe27e18f876549 Mon Sep 17 00:00:00 2001
From: bruneton <bruneton>
Date: Mon, 4 Nov 2013 09:01:48 +0000
Subject: [PATCH] CMake: improved reloading of dependent CMake targets in
 Config file to account for COMPONENTS.

---
 CMakeLists.txt           |  5 +++++
 SalomeMEDConfig.cmake.in | 28 +++++++++++++++-------------
 2 files changed, 20 insertions(+), 13 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 13105ef33..f3dfd0af5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -346,6 +346,11 @@ SET(XDR_ROOT_DIR "${XDR_ROOT_DIR}")
 #       Get the relative path of the include directory so 
 #       we can register it in the generated configuration files:
 SET(CONF_INCLUDE_DIRS "${CMAKE_INSTALL_PREFIX}/${INSTALL_INCLUDE_DIR}")
+
+# Build variables that will be expanded when configuring Salome<MODULE>Config.cmake:
+SALOME_CONFIGURE_PREPARE(Metis ParMetis Scotch XDR CAS Qt4 CppUnit Graphviz Doxygen Sphinx MPI omniORB 
+                         PThread Boost libXml2 Python HDF5 MEDFile)
+
 CONFIGURE_PACKAGE_CONFIG_FILE(${PROJECT_NAME}Config.cmake.in 
     ${PROJECT_BINARY_DIR}/to_install/${PROJECT_NAME}Config.cmake
     INSTALL_DESTINATION "${SALOME_INSTALL_CMAKE}_LOCAL"
diff --git a/SalomeMEDConfig.cmake.in b/SalomeMEDConfig.cmake.in
index 870da99c6..ba7c9aba9 100644
--- a/SalomeMEDConfig.cmake.in
+++ b/SalomeMEDConfig.cmake.in
@@ -81,27 +81,29 @@ ENDIF(SALOME_MED_BUILD_GUI)
 
 # 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.
-# Many of them will be automatically loaded from KERNEL or GUI:
-
-SET(_PREREQ Metis ParMetis Scotch XDR CAS Qt4 CppUnit Graphviz Doxygen Sphinx MPI omniORB 
-            PThread Boost libXml2 Python HDF5 MEDFile)
-SET(_PREREQ_CONFIG_DIR "@Metis_DIR@" "@ParMetis_DIR@" "@Scotch_DIR@" "@XDR_DIR@" "@CAS_DIR@" "@Qt4_DIR@"
-                       "@CppUnit_DIR@" "@Graphviz_DIR@" "@Doxygen_DIR@" "@Sphinx_DIR@" "@MPI_DIR@" 
-                       "@omniORB_DIR@" "@PThread_DIR@" "@Boost_DIR@" "@libXml2_DIR@" 
-                       "@Python_DIR@" "@HDF5_DIR@"  "@MEDFile_DIR@")
-
+# without having to set LD_LIBRARY_PATH:
+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 
+  LIST(GET _PREREQ_COMPONENTS ${_p} _pkg_compo)
+  MESSAGE(STATUS "===> Reloading targets from ${_pkg} ...")
+  IF(NOT _pkg_compo)
+    FIND_PACKAGE(${_pkg} REQUIRED NO_MODULE 
           PATHS "${_pkg_dir}" 
           NO_DEFAULT_PATH)
+  ELSE()
+    STRING(REPLACE "," ";" _compo_lst "${_pkg_compo}")
+    MESSAGE(STATUS "===> (components: ${_pkg_compo})")
+    FIND_PACKAGE(${_pkg} REQUIRED NO_MODULE
+          COMPONENTS ${_compo_lst} 
+          PATHS "${_pkg_dir}"
+          NO_DEFAULT_PATH)
   ENDIF()
 ENDFOREACH()
 
-- 
2.39.2