4 files changed, 90 insertions, 1 deletions
diff --git a/Tests/RunCMake/RuntimePath/Relative.cmake b/Tests/RunCMake/RuntimePath/Relative.cmake
new file mode 100644
index 0000000..203241f
--- /dev/null
+++ b/Tests/RunCMake/RuntimePath/Relative.cmake
@@ -0,0 +1,69 @@
+enable_language(C)
+
+if(NOT CMAKE_SHARED_LIBRARY_RPATH_ORIGIN_TOKEN)
+  if(CMAKE_C_PLATFORM_ID STREQUAL "Linux")
+    # Sanity check for platform that is definitely known to support $ORIGIN.
+    message(FATAL_ERROR "Platform fails to report relative RPATH support")
+  else()
+    message(STATUS "Platform does not support relative RPATHs, skipping")
+  endif()
+  return()
+endif()
+set(CMAKE_BUILD_RPATH_USE_ORIGIN ON)
+
+function(CheckRpath target rpath)
+  add_custom_command(
+    TARGET ${target}
+    POST_BUILD
+    COMMAND ${CMAKE_COMMAND} -Dfile=$<TARGET_FILE:${target}> -Drpath=${rpath}
+            -P "${CMAKE_CURRENT_SOURCE_DIR}/RelativeCheck.cmake"
+    VERBATIM
+  )
+endfunction()
+
+if(CMAKE_C_COMPILER_ID STREQUAL "XL" AND CMAKE_BINARY_DIR MATCHES " ")
+  # XL 16.1.0.0 fails building the library if the output path contains a space.
+  set(externDir)
+  message(STATUS "Skipping external library test because of a toolchain bug")
+else()
+  get_filename_component(externDir "${CMAKE_BINARY_DIR}" DIRECTORY)
+  set(externDir "${externDir}/Relative-extern")
+endif()
+
+add_library(utils SHARED A.c)
+add_library(utils-sub SHARED A.c)
+set_property(TARGET utils-sub PROPERTY LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/libs)
+if(externDir)
+  add_library(utils-extern SHARED A.c)
+  set_property(TARGET utils-extern PROPERTY LIBRARY_OUTPUT_DIRECTORY ${externDir})
+endif()
+
+add_executable(main main.c)
+target_link_libraries(main utils)
+CheckRpath(main "\$ORIGIN")
+
+add_executable(main-norel main.c)
+target_link_libraries(main-norel utils)
+set_property(TARGET main-norel PROPERTY BUILD_RPATH_USE_ORIGIN OFF)
+CheckRpath(main-norel "${CMAKE_CURRENT_BINARY_DIR}")
+
+add_executable(mainsub main.c)
+target_link_libraries(mainsub utils)
+set_property(TARGET mainsub PROPERTY RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/bin)
+CheckRpath(mainsub "\$ORIGIN/../")
+
+add_executable(main-sub main.c)
+target_link_libraries(main-sub utils-sub)
+CheckRpath(main-sub "\$ORIGIN/libs")
+
+add_executable(mainsub-sub main.c)
+target_link_libraries(mainsub-sub utils-sub)
+set_property(TARGET mainsub-sub PROPERTY RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/bin)
+CheckRpath(mainsub-sub "\$ORIGIN/../libs")
+
+if(externDir)
+  # Binaries linking to libraries outside the build tree should have an absolute RPATH.
+  add_executable(main-extern main.c)
+  target_link_libraries(main-extern utils-extern)
+  CheckRpath(main-extern "${externDir}")
+endif()
diff --git a/Tests/RunCMake/RuntimePath/RelativeCheck.cmake b/Tests/RunCMake/RuntimePath/RelativeCheck.cmake
new file mode 100644
index 0000000..9ee403f
--- /dev/null
+++ b/Tests/RunCMake/RuntimePath/RelativeCheck.cmake
@@ -0,0 +1,4 @@
+file(RPATH_CHECK FILE "${file}" RPATH "${rpath}")
+if(NOT EXISTS "${file}")
+  message(FATAL_ERROR "RPATH for ${file} did not contain the expected value")
+endif()
diff --git a/Tests/RunCMake/RuntimePath/RunCMakeTest.cmake b/Tests/RunCMake/RuntimePath/RunCMakeTest.cmake
index 3f238f2..6f1baa1 100644
--- a/Tests/RunCMake/RuntimePath/RunCMakeTest.cmake
+++ b/Tests/RunCMake/RuntimePath/RunCMakeTest.cmake
@@ -16,3 +16,17 @@ function(run_SymlinkImplicit)
     ${CMAKE_COMMAND} -Ddir=${RunCMake_TEST_BINARY_DIR} -P ${RunCMake_SOURCE_DIR}/SymlinkImplicitCheck.cmake)
 endfunction()
 run_SymlinkImplicit()
+
+function(run_Relative)
+  # Use a single build tree for a few tests without cleaning.
+  set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/Relative-build)
+  set(RunCMake_TEST_NO_CLEAN 1)
+  if(NOT RunCMake_GENERATOR_IS_MULTI_CONFIG)
+    set(RunCMake_TEST_OPTIONS -DCMAKE_BUILD_TYPE=Debug)
+  endif()
+  file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
+  file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")
+  run_cmake(Relative)
+  run_cmake_command(Relative-build ${CMAKE_COMMAND} --build . --config Debug)
+endfunction()
+run_Relative()
diff --git a/Tests/RunCMake/RuntimePath/main.c b/Tests/RunCMake/RuntimePath/main.c
index 8488f4e..181cd09 100644
--- a/Tests/RunCMake/RuntimePath/main.c
+++ b/Tests/RunCMake/RuntimePath/main.c
@@ -1,4 +1,6 @@
+extern int libA(void);
+
 int main(void)
 {
-  return 0;
+  return libA();
 }