Introduce a variable to identify in-source build

[alexxy/gromacs.git] / CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 28faeb375a5f8afea0ce8ec6288b05daf09e3c45..d3e6720c424f9885ce37444056127471e69db310 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -705,9 +705,7 @@ endif()
 
 option(GMX_BUILD_HELP "Build man pages, HTML help, and completions automatically (requires that compiled binaries can be executed on the build host)" OFF)
 mark_as_advanced(GMX_BUILD_HELP)
-if (GMX_BUILD_HELP AND SOURCE_IS_SOURCE_DISTRIBUTION AND
-    "${CMAKE_CURRENT_SOURCE_DIR}" STREQUAL "${CMAKE_CURRENT_BINARY_DIR}")
-
+if (GMX_BUILD_HELP AND SOURCE_IS_SOURCE_DISTRIBUTION AND BUILD_IS_INSOURCE)
     message(FATAL_ERROR
         "Rebuilding HTML and man pages is not supported for in-source "
         "builds from a source distribution. "