diff options
| -rw-r--r-- | src/CMakeLists.txt | 40 |
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) |