Refactor cmake script to generate tests for later reuse.

This patch creates a function, piglit_make_generated_tests (in
generated_tests/CMakeLists.txt), to encapsulate the logic that builds
a custom command.  The new function can be reused to generate tests
using other python scripts.

1 files changed, 27 insertions, 9 deletions

diff --git a/generated_tests/CMakeLists.txt b/generated_tests/CMakeLists.txt
index 75b3d8ee..2145d871 100644
--- a/generated_tests/CMakeLists.txt
+++ b/generated_tests/CMakeLists.txt
@@ -1,12 +1,30 @@
-# Add a custom command which executes gen_builtin_uniform_tests.py
-# during the build.
-add_custom_command(
-	OUTPUT builtin_uniform_tests.list
-	COMMAND ${python} ${CMAKE_CURRENT_SOURCE_DIR}/gen_builtin_uniform_tests.py > builtin_uniform_tests.list
-	DEPENDS gen_builtin_uniform_tests.py builtin_function.py
-	VERBATIM)
+# Create a custom command that runs the Python script
+# ${generator_script} to generate tests.
+#
+# A list of the files generated will be output to the file
+# ${file_list}.  This can be used to run the custom command by itself,
+# and is also used by the build system to tell when the files need to
+# be rebuilt.
+#
+# The custom command will automatically depend on ${generator_script}.
+# Additional dependencies can be supplied using additional arguments.
+function(piglit_make_generated_tests file_list generator_script)
+	# Add a custom command which executes ${generator_script}
+	# during the build.
+	add_custom_command(
+		OUTPUT ${file_list}
+		COMMAND ${python} ${CMAKE_CURRENT_SOURCE_DIR}/${generator_script} > ${file_list}
+		DEPENDS ${generator_script} ${ARGN}
+		VERBATIM)
+endfunction(piglit_make_generated_tests custom_target generator_script)
 
-# Add a "gen-tests" target that can be used to generate all the tests
-# without doing any other compilation.
+# Create custom commands and targets to build generated tests.
+piglit_make_generated_tests(
+	builtin_uniform_tests.list
+	gen_builtin_uniform_tests.py
+	builtin_function.py)
+
+# Add a "gen-tests" target that can be used to generate all the
+# tests without doing any other compilation.
 add_custom_target(gen-tests ALL
 	DEPENDS builtin_uniform_tests.list)