From: Nathan Moinvaziri <nathan@nathanm.com>
Date: Mon, 15 Feb 2021 03:01:21 +0000 (-0800)
Subject: Move code coverage detection into its own cmake file.
X-Git-Tag: 2.0.0~21
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0a3ab73fa834786f7de6363e25f10450e43c5602;p=thirdparty%2Fzlib-ng.git

Move code coverage detection into its own cmake file.
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 75806443a..c4c4343b0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -53,6 +53,7 @@ include(CMakeDependentOption)
 include(FeatureSummary)
 
 include(cmake/detect-arch.cmake)
+include(cmake/detect-coverage.cmake)
 include(cmake/detect-sanitizer.cmake)
 
 if(CMAKE_TOOLCHAIN_FILE)
@@ -303,26 +304,7 @@ endif()
 
 # Set code coverage compiler flags
 if(WITH_CODE_COVERAGE)
-    set(CMAKE_REQUIRED_LINK_OPTIONS -coverage)
-    check_c_compiler_flag(-coverage HAVE_COVERAGE)
-    set(CMAKE_REQUIRED_LINK_OPTIONS)
-    if(HAVE_COVERAGE)
-        set(CMAKE_C_FLAGS "-O0 ${CMAKE_C_FLAGS} -coverage")
-        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -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)
-        check_c_compiler_flag("-ftest-coverage -fprofile-arcs -fprofile-values" HAVE_TEST_COVERAGE)
-        if(HAVE_TEST_COVERAGE)
-            set(CMAKE_C_FLAGS "-O0 ${CMAKE_C_FLAGS} -ftest-coverage -fprofile-arcs -fprofile-values")
-            set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lgcov -fprofile-arcs")
-            set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -lgcov -fprofile-arcs")
-        else()
-            message(WARNING "Compiler does not support code coverage")
-        endif()
-        set(CMAKE_REQUIRED_LINK_OPTIONS)
-    endif()
+    add_code_coverage()
 endif()
 
 # Set native instruction set compiler flag
diff --git a/cmake/detect-coverage.cmake b/cmake/detect-coverage.cmake
new file mode 100644
index 000000000..dc5140447
--- /dev/null
+++ b/cmake/detect-coverage.cmake
@@ -0,0 +1,28 @@
+# detect-coverage.cmake -- Detect supported compiler coverage flags
+# Licensed under the Zlib license, see LICENSE.md for details
+
+macro(add_code_coverage)
+    # Check for -coverage flag support for Clang/GCC
+    set(CMAKE_REQUIRED_LINK_OPTIONS -coverage)
+    check_c_compiler_flag(-coverage HAVE_COVERAGE)
+    set(CMAKE_REQUIRED_LINK_OPTIONS)
+
+    if(HAVE_COVERAGE)
+        set(CMAKE_C_FLAGS "-O0 ${CMAKE_C_FLAGS} -coverage")
+        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -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)
+        check_c_compiler_flag("-ftest-coverage -fprofile-arcs -fprofile-values" HAVE_TEST_COVERAGE)
+        set(CMAKE_REQUIRED_LINK_OPTIONS)
+
+        if(HAVE_TEST_COVERAGE)
+            set(CMAKE_C_FLAGS "-O0 ${CMAKE_C_FLAGS} -ftest-coverage -fprofile-arcs -fprofile-values")
+            set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lgcov -fprofile-arcs")
+            set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -lgcov -fprofile-arcs")
+        else()
+            message(WARNING "Compiler does not support code coverage")
+        endif()
+    endif()
+endmacro()