commit 8d6ecbee2f8261590fae277fb2c7a68ff962737d
author Marat Dukhan <marat@fb.com> Wed Jan 31 17:15:49 2018 -0800
committer Marat Dukhan <marat@fb.com> Wed Jan 31 18:34:39 2018 -0800
tree 445ec90e696160207475e5c5e2a62ae29f93a9a8
parent d0a089419a96801c5293e08d276abfddc7f4a78f

CMake: support option to use pre-downloaded deps

CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 73d86a5..00cb3c5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,20 +25,24 @@
 SET(CONFU_DEPENDENCIES_BINARY_DIR ${CMAKE_BINARY_DIR}/deps
   CACHE PATH "Confu-style dependencies binary directory")
 
-IF(NOT TARGET gtest)
+IF(FXDIV_BUILD_TESTS AND NOT DEFINED GOOGLETEST_SOURCE_DIR)
+  MESSAGE(STATUS "Downloading Google Test to ${CONFU_DEPENDENCIES_SOURCE_DIR}/googletest (define GOOGLETEST_SOURCE_DIR to avoid it)")
   CONFIGURE_FILE(cmake/DownloadGoogleTest.cmake "${CMAKE_BINARY_DIR}/googletest-download/CMakeLists.txt")
   EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" -G "${CMAKE_GENERATOR}" .
     WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/googletest-download")
   EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" --build .
     WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/googletest-download")
+  SET(GOOGLETEST_SOURCE_DIR "${CONFU_DEPENDENCIES_SOURCE_DIR}/googletest" CACHE STRING "Google Test source directory")
 ENDIF()
 
-IF(NOT TARGET benchmark)
+IF(FXDIV_BUILD_BENCHMARKS AND NOT DEFINED GOOGLEBENCHMARK_SOURCE_DIR)
+  MESSAGE(STATUS "Downloading Google Benchmark to ${CONFU_DEPENDENCIES_SOURCE_DIR}/googlebenchmark (define GOOGLEBENCHMARK_SOURCE_DIR to avoid it)")
   CONFIGURE_FILE(cmake/DownloadGoogleBenchmark.cmake "${CMAKE_BINARY_DIR}/googlebenchmark-download/CMakeLists.txt")
   EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" -G "${CMAKE_GENERATOR}" .
     WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/googlebenchmark-download")
   EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" --build .
     WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/googlebenchmark-download")
+  SET(GOOGLEBENCHMARK_SOURCE_DIR "${CONFU_DEPENDENCIES_SOURCE_DIR}/googlebenchmark" CACHE STRING "Google Benchmark source directory")
 ENDIF()
 
 # ---[ FXdiv library
@@ -57,7 +61,7 @@
   IF(NOT TARGET gtest)
     SET(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
     ADD_SUBDIRECTORY(
-      "${CONFU_DEPENDENCIES_SOURCE_DIR}/googletest"
+      "${GOOGLETEST_SOURCE_DIR}"
       "${CONFU_DEPENDENCIES_BINARY_DIR}/googletest")
   ENDIF()
 
@@ -75,7 +79,7 @@
   IF(NOT TARGET benchmark)
     SET(BENCHMARK_ENABLE_TESTING OFF CACHE BOOL "" FORCE)
     ADD_SUBDIRECTORY(
-      "${CONFU_DEPENDENCIES_SOURCE_DIR}/googlebenchmark"
+      "${GOOGLEBENCHMARK_SOURCE_DIR}"
       "${CONFU_DEPENDENCIES_BINARY_DIR}/googlebenchmark")
   ENDIF()