From: Nathan Moinvaziri <nathan@nathanm.com>
Date: Mon, 24 Jan 2022 03:53:22 +0000 (-0800)
Subject: Added fallback macros for add_compile_options and add_link_options.
X-Git-Tag: 2.1.0-beta1~412
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8927b8553d2e3fd89582d1a9f91f0d24f4ce736d;p=thirdparty%2Fzlib-ng.git

Added fallback macros for add_compile_options and add_link_options.
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b9de19a75..dfdc98bbb 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -51,6 +51,7 @@ include(cmake/detect-install-dirs.cmake)
 include(cmake/detect-coverage.cmake)
 include(cmake/detect-intrinsics.cmake)
 include(cmake/detect-sanitizer.cmake)
+include(cmake/fallback-macros.cmake)
 
 if(CMAKE_TOOLCHAIN_FILE)
     message(STATUS "Using CMake toolchain: ${CMAKE_TOOLCHAIN_FILE}")
diff --git a/cmake/fallback-macros.cmake b/cmake/fallback-macros.cmake
new file mode 100644
index 000000000..8bc6cf25b
--- /dev/null
+++ b/cmake/fallback-macros.cmake
@@ -0,0 +1,19 @@
+# fallback-macros.cmake -- CMake fallback macros
+# Copyright (C) 2022 Nathan Moinvaziri
+# Licensed under the Zlib license, see LICENSE.md for details
+
+# CMake less than version 3.5.2
+if(NOT COMMAND add_compile_options)
+    macro(add_compile_options options)
+        string(APPEND CMAKE_C_FLAGS ${options})
+        string(APPEND CMAKE_CXX_FLAGS ${options})
+    endmacro()
+endif()
+
+# CMake less than version 3.14
+if(NOT COMMAND add_link_options)
+    macro(add_link_options options)
+        string(APPEND CMAKE_EXE_LINKER_FLAGS ${options})
+        string(APPEND CMAKE_SHARED_LINKER_FLAGS ${options})
+    endmacro()
+endif()