LTO используется только для исполняемых файлов, но не библиотек

CMLibCommonTargetProperties.cmake

@@ -46,4 +46,41 @@ function(common_target_properties Name)
     endif()
   endif()
 
+  # LTO only for executables (not libraries) in Release build type
+  get_target_property(target_type ${Name} TYPE)
+  if(target_type STREQUAL "EXECUTABLE" AND CMAKE_BUILD_TYPE STREQUAL "Release")
+    check_cxx_compiler_flag(-flto CXX_HAS_LTO_FLAG)
+    check_cxx_compiler_flag(-fno-fat-lto-objects CXX_HAS_NO_FAT_LTO_FLAG)
+    if(CMAKE_CXX_COMPILER_IS_GCC AND CXX_HAS_LTO_FLAG)
+      find_program(CMAKE_GCC_AR
+                   NAMES "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ar${_CMAKE_TOOLCHAIN_SUFFIX}"
+                         "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ar"
+                   HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
+      find_program(CMAKE_GCC_NM
+                   NAMES "${_CMAKE_TOOLCHAIN_PREFIX}gcc-nm${_CMAKE_TOOLCHAIN_SUFFIX}"
+                         "${_CMAKE_TOOLCHAIN_PREFIX}gcc-nm"
+                   HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
+      find_program(CMAKE_GCC_RANLIB
+                   NAMES "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ranlib${_CMAKE_TOOLCHAIN_SUFFIX}"
+                         "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ranlib"
+                   HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
+      if(CMAKE_GCC_AR AND CMAKE_GCC_NM AND CMAKE_GCC_RANLIB)
+        set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -flto")
+        if(CXX_HAS_NO_FAT_LTO_FLAG)
+          set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fno-fat-lto-objects")
+        endif()
+        set(CMAKE_AR "${CMAKE_GCC_AR}")
+        set(CMAKE_NM "${CMAKE_GCC_NM}")
+        set(CMAKE_RANLIB "${CMAKE_GCC_RANLIB}")
+      else()
+        message(
+          WARNING
+            "GCC indicates LTO support, but binutils wrappers could not be found. Disabling LTO.")
+      endif()
+    else()
+      check_enable_compiler_flag(-flto)
+      check_enable_compiler_flag(-fno-fat-lto-objects)
+    endif()
+  endif()
+
 endfunction()

CMLibCompilerFlags.cmake

@@ -1,15 +1,20 @@
 # based on https://github.com/bluescarni/yacma
 
+include(CheckCXXCompilerFlag)
+
 if(LSB_DISTRIBUTOR_ID STREQUAL "AstraLinuxSE"
    AND LSB_CODENAME STREQUAL "smolensk"
    AND LSB_RELEASE STREQUAL "1.5")
   set(_CMAKE_TOOLCHAIN_PREFIX "x86_64-linux-gnu-")
   set(_CMAKE_TOOLCHAIN_SUFFIX "-4.7")
   set(_CMAKE_TOOLCHAIN_LOCATION} "/usr/bin")
+else()
+  # -Wshadow gives a lot of false positives with GCC 4.7.2 in Astra Linux 1.5
+  if(CMAKE_CXX_COMPILER_IS_GCC)
+    check_enable_cxx_flag(-Wshadow)
+  endif()
 endif()
 
-include(CheckCXXCompilerFlag)
-
 macro(CHECK_ENABLE_CXX_FLAG flag)
   set(CMAKE_REQUIRED_QUIET TRUE)
   check_cxx_compiler_flag("${flag}" CHECK_CXX_FLAG)
@@ -92,41 +97,6 @@ if(CMAKE_CXX_COMPILER_IS_CLANG OR CMAKE_CXX_COMPILER_IS_INTEL OR CMAKE_CXX_COMPI
     check_enable_cxx_flag(-Wstrict-null-sentinel)
     check_enable_cxx_flag(-Wshadow-all)
   endif()
-
-  if(CMAKE_BUILD_TYPE STREQUAL "Release")
-    check_cxx_compiler_flag(-flto CXX_HAS_LTO_FLAG)
-    check_cxx_compiler_flag(-fno-fat-lto-objects CXX_HAS_NO_FAT_LTO_FLAG)
-    if(CMAKE_CXX_COMPILER_IS_GCC AND CXX_HAS_LTO_FLAG)
-      find_program(CMAKE_GCC_AR
-                   NAMES "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ar${_CMAKE_TOOLCHAIN_SUFFIX}"
-                         "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ar"
-                   HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
-      find_program(CMAKE_GCC_NM
-                   NAMES "${_CMAKE_TOOLCHAIN_PREFIX}gcc-nm${_CMAKE_TOOLCHAIN_SUFFIX}"
-                         "${_CMAKE_TOOLCHAIN_PREFIX}gcc-nm"
-                   HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
-      find_program(CMAKE_GCC_RANLIB
-                   NAMES "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ranlib${_CMAKE_TOOLCHAIN_SUFFIX}"
-                         "${_CMAKE_TOOLCHAIN_PREFIX}gcc-ranlib"
-                   HINTS ${_CMAKE_TOOLCHAIN_LOCATION})
-      if(CMAKE_GCC_AR AND CMAKE_GCC_NM AND CMAKE_GCC_RANLIB)
-        set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -flto")
-        if(CXX_HAS_NO_FAT_LTO_FLAG)
-          set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -fno-fat-lto-objects")
-        endif()
-        set(CMAKE_AR "${CMAKE_GCC_AR}")
-        set(CMAKE_NM "${CMAKE_GCC_NM}")
-        set(CMAKE_RANLIB "${CMAKE_GCC_RANLIB}")
-      else()
-        message(
-          WARNING
-            "GCC indicates LTO support, but binutils wrappers could not be found. Disabling LTO.")
-      endif()
-    else()
-      check_enable_compiler_flag(-flto)
-      check_enable_compiler_flag(-fno-fat-lto-objects)
-    endif()
-  endif()
 endif()
 
 if(CMAKE_CXX_COMPILER_IS_GCC)
@@ -142,10 +112,6 @@ if(CMAKE_CXX_COMPILER_IS_GCC)
     # Let's just disable the warning for now.
     check_enable_cxx_flag(-Wno-attributes)
   endif()
-  if(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "4.799")
-    # -Wshadow gives a lot of false positives with GCC 4.7.2 in Astra Linux 1.5
-    check_enable_cxx_flag(-Wshadow)
-  endif()
 endif()
 
 if(CMAKE_SYSTEM_PROCESSOR STREQUAL "e2k")