CI: Use system's cpu_features in FreeBSD CI

.cirrus.yml

@@ -13,10 +13,10 @@ FreeBSD_task:
     freebsd_instance:
       image_family: freebsd-14-0
   prepare_script:
-    - pkg install -y pkgconf cmake git libsodium $SSL
+    - pkg install -y pkgconf cmake git libsodium cpu_features $SSL
     - git submodule update --init --recursive
   configure_script:
-    - ./configure
+    - CMAKE_FLAGS="-DUSE_SYSTEM_CPU_FEATURES=1" CFLAGS="-I/usr/local/include/cpu_features" ./configure
   build_script:
     - make -j $(sysctl -n hw.ncpu || echo 4) -C build
   test_script:

src/Mayaqua/CMakeLists.txt

@@ -121,6 +121,8 @@ if(UNIX)
     message("cpu_features is not available on ${CMAKE_SYSTEM_NAME}")
     add_definitions(-DSKIP_CPU_FEATURES)
   elseif(USE_SYSTEM_CPU_FEATURES)
+    CHECK_INCLUDE_FILE(cpu_features_macros.h HAVE_CPU_FEATURES)
+    message("-- Using system's cpu_features")
     target_link_libraries(mayaqua PRIVATE cpu_features)
   else()
     add_subdirectory(3rdparty/cpu_features)