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-rw-r--r--Tests/RunCMake/add_custom_target/RunCMakeTest.cmake14
-rw-r--r--Tests/RunCMake/add_custom_target/TargetOrder.cmake31
2 files changed, 45 insertions, 0 deletions
diff --git a/Tests/RunCMake/add_custom_target/RunCMakeTest.cmake b/Tests/RunCMake/add_custom_target/RunCMakeTest.cmake
index 92c4a38..6c4e91b 100644
--- a/Tests/RunCMake/add_custom_target/RunCMakeTest.cmake
+++ b/Tests/RunCMake/add_custom_target/RunCMakeTest.cmake
@@ -4,3 +4,17 @@ run_cmake(NoArguments)
run_cmake(BadTargetName)
run_cmake(ByproductsNoCommand)
run_cmake(UsesTerminalNoCommand)
+
+function(run_TargetOrder)
+ # Use a single build tree for a few tests without cleaning.
+ set(RunCMake_TEST_BINARY_DIR ${RunCMake_BINARY_DIR}/TargetOrder-build)
+ set(RunCMake_TEST_NO_CLEAN 1)
+ file(REMOVE_RECURSE "${RunCMake_TEST_BINARY_DIR}")
+ file(MAKE_DIRECTORY "${RunCMake_TEST_BINARY_DIR}")
+ run_cmake(TargetOrder)
+ if(RunCMake_GENERATOR STREQUAL "Ninja")
+ set(build_flags -j 1 -v)
+ endif()
+ run_cmake_command(TargetOrder-build ${CMAKE_COMMAND} --build . -- ${build_flags})
+endfunction()
+run_TargetOrder()
diff --git a/Tests/RunCMake/add_custom_target/TargetOrder.cmake b/Tests/RunCMake/add_custom_target/TargetOrder.cmake
new file mode 100644
index 0000000..21669c0
--- /dev/null
+++ b/Tests/RunCMake/add_custom_target/TargetOrder.cmake
@@ -0,0 +1,31 @@
+# Add a target that requires step1 to run first but enforces
+# it only by target-level ordering dependency.
+add_custom_command(
+ OUTPUT step2.txt
+ COMMAND ${CMAKE_COMMAND} -E copy step1.txt step2.txt
+ )
+add_custom_target(step2 DEPENDS step2.txt)
+add_dependencies(step2 step1)
+
+# Add a target that requires step1 and step2 to work,
+# only depends on step1 transitively through step2, but
+# also gets a copy of step2's custom command.
+# The Ninja generator in particular must be careful with
+# this case because it needs to compute the proper set of
+# target ordering dependencies for the step2 custom command
+# even though it appears in both the step2 and step3
+# targets due to dependency propagation.
+add_custom_command(
+ OUTPUT step3.txt
+ COMMAND ${CMAKE_COMMAND} -E copy step1.txt step3-1.txt
+ COMMAND ${CMAKE_COMMAND} -E copy step2.txt step3.txt
+ DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/step2.txt
+ )
+add_custom_target(step3 ALL DEPENDS step3.txt)
+add_dependencies(step3 step2)
+
+# We want this target to always run first. Add it last so
+# that serial builds require dependencies to order it first.
+add_custom_target(step1
+ COMMAND ${CMAKE_COMMAND} -E touch step1.txt
+ )