From f30da02f45bd892cf771ee03a89d4c4cf2b9957f Mon Sep 17 00:00:00 2001
From: vsr <vsr@opencascade.com>
Date: Fri, 1 Oct 2021 15:24:25 +0300
Subject: [PATCH] bos #24474 Add possibility to create relative symbolic links

---
 CMakeLists.txt                  | 2 ++
 cmake/DocumentationMacros.cmake | 8 +++++++-
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0472810..9957c65 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -56,6 +56,8 @@ INCLUDE(CMakeDependentOption)
 OPTION(SALOME_INSTALL_MODULES_DOC "Install documentation of SALOME modules" OFF)
 CMAKE_DEPENDENT_OPTION(SALOME_CREATE_SYMLINKS "Create symlinks instead of installing docs" OFF
                        "NOT WIN32;SALOME_INSTALL_MODULES_DOC" OFF)
+CMAKE_DEPENDENT_OPTION(SALOME_RELATIVE_SYMLINKS "Make relative symlinks instead of absolute ones" OFF
+                       "NOT WIN32;SALOME_INSTALL_MODULES_DOC;SALOME_CREATE_SYMLINKS" OFF)
 
 # Find prerequisites needed to documentation generation
 # =====================================================
diff --git a/cmake/DocumentationMacros.cmake b/cmake/DocumentationMacros.cmake
index 6c8cfb3..51937c0 100644
--- a/cmake/DocumentationMacros.cmake
+++ b/cmake/DocumentationMacros.cmake
@@ -13,6 +13,11 @@
 # ==============================================================================
 
 MACRO(SALOME_CREATE_SYMLINK src_path link_path)
+  IF(SALOME_RELATIVE_SYMLINKS)
+    FILE(RELATIVE_PATH _link "$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/${link_path}/.." "${src_path}")
+  ELSE()
+    SET(_link "${src_path}")
+  ENDIF()
   INSTALL(CODE "
           IF(EXISTS \"${src_path}\")
             MESSAGE(STATUS \"Creating symbolic link \$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/${link_path}\")
@@ -20,7 +25,8 @@ MACRO(SALOME_CREATE_SYMLINK src_path link_path)
             EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -E make_directory
                     \"\${_path}\")
             EXECUTE_PROCESS(COMMAND ${CMAKE_COMMAND} -E create_symlink
-                    \"${src_path}\" \"\$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/${link_path}\")
+                    \"${_link}\" \"\$ENV{DESTDIR}${CMAKE_INSTALL_PREFIX}/${link_path}\"
+                    WORKING_DIRECTORY \"${_path}\")
           ENDIF()
           ")
 ENDMACRO()
-- 
2.39.2