Teach the CMake build system to run lit's test suite. These can be run

[oota-llvm.git] / utils / lit / CMakeLists.txt

diff --git a/utils/lit/CMakeLists.txt b/utils/lit/CMakeLists.txt
new file mode 100644 (file)
index 0000000..79862a7
--- /dev/null
+++ b/utils/lit/CMakeLists.txt
@@ -0,0 +1,26 @@
+# The configured file is not placed in the correct location
+# until the tests are run as we need to copy it into
+# a copy of the tests folder
+configure_file("tests/lit.site.cfg.in" "lit.site.cfg" @ONLY)
+
+# Lit's test suite creates output files next to the sources which makes the
+# source tree dirty. This is undesirable because we do out of source builds.
+# To work around this the tests and the configuration file are copied into the
+# build directory just before running them. The tests are not copied over at
+# configure time (i.e. ``file(COPY ...)``) because this could lead to stale
+# tests being run.
+add_custom_target(prepare-check-lit
+  COMMAND ${CMAKE_COMMAND} -E copy_directory "${CMAKE_CURRENT_SOURCE_DIR}/tests" "${CMAKE_CURRENT_BINARY_DIR}/tests"
+  COMMAND ${CMAKE_COMMAND} -E copy "${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg" "${CMAKE_CURRENT_BINARY_DIR}/tests"
+  COMMENT "Preparing lit tests"
+)
+
+# Add rules for lit's own test suite
+add_lit_testsuite(check-lit "Running lit's tests"
+  ${CMAKE_CURRENT_BINARY_DIR}
+  DEPENDS "FileCheck" "not" "prepare-check-lit"
+)
+
+# For IDEs
+set_target_properties(check-lit PROPERTIES FOLDER "Tests")
+set_target_properties(prepare-check-lit PROPERTIES FOLDER "Tests")