From d57bbeb634ff8ef93f4e2017b0787b0ee9004e55 Mon Sep 17 00:00:00 2001
From: Andrey Astafyev <dev@246060.ru>
Date: Tue, 8 Oct 2019 16:33:29 +0300
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---
 CMLibCodeCoverage.cmake | 56 ++++++++++++++++++++++-------------------
 1 file changed, 30 insertions(+), 26 deletions(-)

diff --git a/CMLibCodeCoverage.cmake b/CMLibCodeCoverage.cmake
index 50d9898..d472b80 100644
--- a/CMLibCodeCoverage.cmake
+++ b/CMLibCodeCoverage.cmake
@@ -1,34 +1,38 @@
 function(add_code_coverage)
   list(GET ARGN 0 _target)
 
-  find_program(LCOV_EXE NAMES lcov)
-  find_program(GENHTML_EXE NAMES genhtml)
-  target_compile_options(${_target} PUBLIC "--coverage")
-  get_target_property(LF ${_target} LINK_FLAGS)
-  list(APPEND LF "--coverage")
-  set_target_properties(${_target} PROPERTIES LINK_FLAGS ${LF})
+  if(CMAKE_CXX_COMPILER_IS_GCC)
+    find_program(LCOV_EXE NAMES lcov)
+    find_program(GENHTML_EXE NAMES genhtml)
+    target_compile_options(${_target} PUBLIC "--coverage")
+    get_target_property(LF ${_target} LINK_FLAGS)
+    string(APPEND LF " --coverage")
+    set_target_properties(${_target} PROPERTIES LINK_FLAGS ${LF})
 
-  if(LCOV_EXE)
-    add_custom_target(coverage-${_target}
-                      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-                      COMMAND ${LCOV_EXE}
-                              --test-name
-                              ${_target}
-                              --output
-                              "${_target}.lcov"
-                              --capture
-                              --directory
-                              ${CMAKE_BINARY_DIR})
-    add_dependencies(coverage-${_target} ${_target})
-
-    if(GENHTML_EXE)
-      add_custom_target(coverage-report-${_target}
+    if(LCOV_EXE)
+      add_custom_target(coverage-${_target}
                         WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-                        COMMAND ${GENHTML_EXE}
-                                --output-directory
-                                "report-${_target}"
-                                "${_target}.lcov")
-      add_dependencies(coverage-report-${_target} coverage-${_target})
+                        COMMAND ${LCOV_EXE}
+                                --test-name
+                                ${_target}
+                                --output
+                                "${_target}.lcov"
+                                --capture
+                                --directory
+                                ${CMAKE_BINARY_DIR})
+      add_dependencies(coverage-${_target} ${_target})
+
+      if(GENHTML_EXE)
+        add_custom_target(coverage-report-${_target}
+                          WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+                          COMMAND ${GENHTML_EXE}
+                                  --output-directory
+                                  "report-${_target}"
+                                  "${_target}.lcov")
+        add_dependencies(coverage-report-${_target} coverage-${_target})
+      endif()
     endif()
+  else()
+    message("Only GCC is supported for code coverage")
   endif()
 endfunction()