From 8035b7f32033a41e829a7289dbbef3fd39863dc0 Mon Sep 17 00:00:00 2001
From: Luis Diaz Mas <piponazo@gmail.com>
Date: Wed, 12 May 2021 20:31:41 +0200
Subject: [PATCH] cmake: Add target for obtaining local covarage reports

---
 CMakeLists.txt    |  1 +
 cmake/gcovr.cmake | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 cmake/gcovr.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b1571b1a..2c7627ef 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -52,6 +52,7 @@ mark_as_advanced(
 
 option( BUILD_WITH_CCACHE             "Use ccache to speed up compilations"                   OFF )
 option( BUILD_WITH_COVERAGE           "Add compiler flags to generate coverage stats"         OFF )
+include(cmake/gcovr.cmake REQUIRED)
 
 set( PACKAGE_BUGREPORT                "http://github.com/exiv2/exiv2" )
 set( PACKAGE_URL                      "https://exiv2.org")
diff --git a/cmake/gcovr.cmake b/cmake/gcovr.cmake
new file mode 100644
index 00000000..c787b884
--- /dev/null
+++ b/cmake/gcovr.cmake
@@ -0,0 +1,20 @@
+# Intentd usage
+#   cmake -DBUILD_WITH_COVERAGE=yes ../
+#   make -j
+#   make tests
+#   make coverage
+
+if(BUILD_WITH_COVERAGE)
+    find_program (GCOVR gcovr)
+
+    if(GCOVR)
+        file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/coverage_output )
+        add_custom_command(OUTPUT _run_gcovr_parser
+            POST_BUILD
+            COMMAND ${GCOVR} --root ${CMAKE_SOURCE_DIR} --object-dir=${CMAKE_BINARY_DIR} --html --html-details -o coverage_output/coverage.html
+            WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+        )
+        add_custom_target (coverage DEPENDS _run_gcovr_parser)
+    endif()
+
+endif(BUILD_WITH_COVERAGE)