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-rw-r--r--src/CMakeLists.txt40
1 files changed, 25 insertions, 15 deletions
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 4358f6bce..bad1500e1 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -344,31 +344,41 @@ SET_TARGET_PROPERTIES(${CMAKE_PROJECT_NAME} PROPERTIES
# Create a symbolic link from ${orig} to ${link}
+# If the orig and link point to the same thing, does nothing (-> in-source build)
# If ${link} already exists, does nothing.
function(make_symlink orig link)
# Get OS dependent path to use in `execute_process`
- message("Creating symlink, orig = ${orig}; link = ${link}")
file(TO_NATIVE_PATH "${orig}" orig)
file(TO_NATIVE_PATH "${link}" link)
- if (NOT EXISTS ${link})
- if (CMAKE_HOST_UNIX)
- set(command ln -s ${orig} ${link})
+ # If both are the same, or link already exists, bail out:
+ if ("${orig}" STREQUAL "${link}")
+ return()
+ endif()
+ if (EXISTS ${link})
+ return()
+ endif()
+
+ # Create the symlink (platform-dependent):
+ message("Creating symlink, orig = ${orig}; link = ${link}")
+ if (CMAKE_HOST_UNIX)
+ set(command ln -s ${orig} ${link})
+ else()
+ if (IS_DIRECTORY ${orig})
+ set(command cmd.exe /c mklink /j ${link} ${orig})
else()
- if (IS_DIRECTORY ${orig})
- set(command cmd.exe /c mklink /j ${link} ${orig})
- else()
- set(command cmd.exe /c mklink /h ${link} ${orig})
- endif()
+ set(command cmd.exe /c mklink /h ${link} ${orig})
endif()
+ endif()
- execute_process(COMMAND ${command}
- RESULT_VARIABLE result
- ERROR_VARIABLE output)
+ execute_process(
+ COMMAND ${command}
+ RESULT_VARIABLE result
+ ERROR_VARIABLE output
+ )
- if (NOT ${result} EQUAL 0)
- message(FATAL_ERROR "Could not create symbolic link for: ${link} --> ${orig}: ${output}")
- endif()
+ if (NOT ${result} EQUAL 0)
+ message(FATAL_ERROR "Could not create symbolic link for: ${link} --> ${orig}: ${output}")
endif()
endfunction(make_symlink)