From: Hans Kristian Rosbach <hk-git@circlestorm.org>
Date: Sat, 24 Apr 2021 21:58:35 +0000 (+0200)
Subject: Fix cmake coverage detection requiring cmake 3.14 or newer.
X-Git-Tag: 2.0.3~16
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=29fd4672a2279a0368be936d7cd44d013d009fae;p=thirdparty%2Fzlib-ng.git

Fix cmake coverage detection requiring cmake 3.14 or newer.
---

diff --git a/cmake/detect-coverage.cmake b/cmake/detect-coverage.cmake
index dc5140447..96478f677 100644
--- a/cmake/detect-coverage.cmake
+++ b/cmake/detect-coverage.cmake
@@ -3,8 +3,13 @@
 
 macro(add_code_coverage)
     # Check for -coverage flag support for Clang/GCC
-    set(CMAKE_REQUIRED_LINK_OPTIONS -coverage)
+    if(CMAKE_VERSION VERSION_LESS 3.14)
+        set(CMAKE_REQUIRED_LIBRARIES -lgcov)
+    else()
+        set(CMAKE_REQUIRED_LINK_OPTIONS -coverage)
+    endif()
     check_c_compiler_flag(-coverage HAVE_COVERAGE)
+    set(CMAKE_REQUIRED_LIBRARIES)
     set(CMAKE_REQUIRED_LINK_OPTIONS)
 
     if(HAVE_COVERAGE)
@@ -13,8 +18,13 @@ macro(add_code_coverage)
         set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -coverage")
     else()
         # Some versions of GCC don't support -coverage shorthand
-        set(CMAKE_REQUIRED_LINK_OPTIONS -lgcov -fprofile-arcs)
+        if(CMAKE_VERSION VERSION_LESS 3.14)
+            set(CMAKE_REQUIRED_LIBRARIES -lgcov)
+        else()
+            set(CMAKE_REQUIRED_LINK_OPTIONS -lgcov -fprofile-arcs)
+        endif()
         check_c_compiler_flag("-ftest-coverage -fprofile-arcs -fprofile-values" HAVE_TEST_COVERAGE)
+        set(CMAKE_REQUIRED_LIBRARIES)
         set(CMAKE_REQUIRED_LINK_OPTIONS)
 
         if(HAVE_TEST_COVERAGE)