Confu-like deps management in CMake build

1 files changed, 58 insertions, 13 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index f849edb..5c254e0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,4 +1,4 @@
-CMAKE_MINIMUM_REQUIRED(VERSION 3.2 FATAL_ERROR)
+CMAKE_MINIMUM_REQUIRED(VERSION 2.8.12 FATAL_ERROR)
 
 INCLUDE(GNUInstallDirs)
 
@@ -10,11 +10,40 @@ OPTION(PTHREADPOOL_BUILD_TESTS "Build pthreadpool unit tests" ON)
 OPTION(PTHREADPOOL_BUILD_BENCHMARKS "Build pthreadpool micro-benchmarks" ON)
 
 # ---[ CMake options
-LIST(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
 IF(PTHREADPOOL_BUILD_TESTS)
   ENABLE_TESTING()
 ENDIF()
 
+# ---[ Download deps
+SET(CONFU_DEPENDENCIES_SOURCE_DIR ${CMAKE_SOURCE_DIR}/deps
+  CACHE PATH "Confu-style dependencies source directory")
+SET(CONFU_DEPENDENCIES_BINARY_DIR ${CMAKE_BINARY_DIR}/deps
+  CACHE PATH "Confu-style dependencies binary directory")
+
+IF(NOT TARGET fxdiv)
+  CONFIGURE_FILE(cmake/DownloadFXdiv.cmake fxdiv-download/CMakeLists.txt)
+  EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" -G "${CMAKE_GENERATOR}" .
+    WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/fxdiv-download")
+  EXECUTE_PROCESS(COMMAND "${CMAKE_COMMAND}" --build .
+    WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/fxdiv-download")
+ENDIF()
+
+IF(NOT TARGET gtest)
+  CONFIGURE_FILE(cmake/DownloadGoogleTest.cmake 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 "${CMAKE_BINARY_DIR}/googletest-download")
+ENDIF()
+
+IF(NOT TARGET benchmark)
+  CONFIGURE_FILE(cmake/DownloadGoogleBenchmark.cmake googlebenchmark-download/CMakeLists.txt)
+  EXECUTE_PROCESS(COMMAND "${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")
+ENDIF()
+
 # ---[ Build flags
 IF(NOT MSVC)
   SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")
@@ -38,9 +67,15 @@ IF(NOT CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
   TARGET_LINK_LIBRARIES(pthreadpool PUBLIC Threads::Threads)
 ENDIF()
 
-FIND_PACKAGE(FXdiv REQUIRED)
-TARGET_INCLUDE_DIRECTORIES(pthreadpool PRIVATE ${FXDIV_INCLUDE_DIRS})
-ADD_DEPENDENCIES(pthreadpool ${FXDIV_DEPENDENCY})
+# ---[ Configure FXdiv
+IF(NOT TARGET fxdiv)
+  SET(FXDIV_BUILD_TESTS OFF CACHE BOOL "")
+  SET(FXDIV_BUILD_BENCHMARKS OFF CACHE BOOL "")
+  ADD_SUBDIRECTORY(
+    "${CONFU_DEPENDENCIES_SOURCE_DIR}/fxdiv"
+    "${CONFU_DEPENDENCIES_BINARY_DIR}/fxdiv")
+ENDIF()
+TARGET_LINK_LIBRARIES(pthreadpool PRIVATE fxdiv)
 
 INSTALL(TARGETS pthreadpool
   LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
@@ -48,21 +83,31 @@ INSTALL(TARGETS pthreadpool
   PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 
 IF(PTHREADPOOL_BUILD_TESTS)
-  FIND_PACKAGE(GTest REQUIRED)
+  # ---[ Build google test
+  IF(NOT TARGET gtest)
+    SET(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+    ADD_SUBDIRECTORY(
+      "${CONFU_DEPENDENCIES_SOURCE_DIR}/googletest"
+      "${CONFU_DEPENDENCIES_BINARY_DIR}/googletest")
+  ENDIF()
 
   ADD_EXECUTABLE(pthreadpool-test test/pthreadpool.cc)
-  TARGET_INCLUDE_DIRECTORIES(pthreadpool-test PRIVATE ${GTEST_INCLUDE_DIRS})
-  TARGET_LINK_LIBRARIES(pthreadpool-test pthreadpool ${GTEST_BOTH_LIBRARIES})
+  TARGET_LINK_LIBRARIES(pthreadpool-test pthreadpool gtest gtest_main)
+  ADD_TEST(pthreadpool pthreadpool-test)
 ENDIF()
 
 IF(PTHREADPOOL_BUILD_BENCHMARKS)
-  FIND_PACKAGE(GBenchmark REQUIRED)
+  # ---[ Build google benchmark
+  IF(NOT TARGET benchmark)
+    SET(BENCHMARK_ENABLE_TESTING ON CACHE BOOL "")
+    ADD_SUBDIRECTORY(
+      "${CONFU_DEPENDENCIES_SOURCE_DIR}/googlebenchmark"
+      "${CONFU_DEPENDENCIES_BINARY_DIR}/googlebenchmark")
+  ENDIF()
 
   ADD_EXECUTABLE(latency-bench bench/latency.cc)
-  TARGET_INCLUDE_DIRECTORIES(latency-bench PRIVATE ${GBENCHMARK_INCLUDE_DIRS})
-  TARGET_LINK_LIBRARIES(latency-bench pthreadpool ${GBENCHMARK_LIBRARIES})
+  TARGET_LINK_LIBRARIES(latency-bench pthreadpool benchmark)
 
   ADD_EXECUTABLE(throughput-bench bench/throughput.cc)
-  TARGET_INCLUDE_DIRECTORIES(throughput-bench PRIVATE ${GBENCHMARK_INCLUDE_DIRS})
-  TARGET_LINK_LIBRARIES(throughput-bench pthreadpool ${GBENCHMARK_LIBRARIES})
+  TARGET_LINK_LIBRARIES(throughput-bench pthreadpool benchmark)
 ENDIF()