Introduce a variable to identify in-source build

[alexxy/gromacs.git] / docs / manual / CMakeLists.txt

diff --git a/docs/manual/CMakeLists.txt b/docs/manual/CMakeLists.txt
index 0a012e04ff9e5351bf8cfb4e6de4367933abb426..ea6ccbb82a1a5b2c1aecd56714d6e16b21c9ca9e 100644 (file)
--- a/docs/manual/CMakeLists.txt
+++ b/docs/manual/CMakeLists.txt
@@ -32,7 +32,7 @@
 # To help us fund GROMACS development, we humbly ask that you cite
 # the research papers on the package. Check out http://www.gromacs.org.
 
-if(${CMAKE_BINARY_DIR} STREQUAL ${CMAKE_SOURCE_DIR})
+if (BUILD_IS_INSOURCE)
     # UseLATEX.cmake does not work with an in-source build
     message(STATUS "Cannot build the manual when building in the source directory")
     set(MANUAL_BUILD_IS_POSSIBLE OFF)