From 252293edc6c33d0fe90d17d090e477d46601b11e Mon Sep 17 00:00:00 2001
From: Richard Russon <rich@flatcap.org>
Date: Tue, 16 Apr 2019 01:47:40 +0100
Subject: [PATCH] build: add coverage testing

---
 .gitignore         |  3 +++
 Makefile.autosetup |  9 +++++++++
 auto.def           | 11 ++++++++++-
 3 files changed, 22 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index 5b05e3eb0..330609b16 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,9 +17,12 @@ test/string-test
 
 # Build products
 *.o
+*.gc??
 *.Po
 *.Tpo
 html
+lcov
+lcov.info
 lib*.a
 po/*.mo
 po/neomutt.pot
diff --git a/Makefile.autosetup b/Makefile.autosetup
index 19abf26c2..2027cdfc5 100644
--- a/Makefile.autosetup
+++ b/Makefile.autosetup
@@ -424,6 +424,15 @@ distclean: clean
 	$(RM) $(DEPFILES) .clang_complete autosetup/jimsh0 config.h config.log \
 		conststrings.c contrib/Makefile doc/Makefile doc/neomutt.1 \
 		html Makefile po/Makefile test/Makefile
+	$(RM) *.gc?? */*.gc?? test/*/*.gc??
+	$(RM) lcov.info lcov
+
+# coverage testing
+coverage: all test
+	$(RM) lcov
+	$(RM) config/dump.gc??
+	lcov -t "result" -o lcov.info -c -d mutt -d config
+	genhtml -o lcov lcov.info
 
 # Tests for the config code
 config-test: libmutt.a libemail.a libconfig.a
diff --git a/auto.def b/auto.def
index 1d4468571..298756a1d 100644
--- a/auto.def
+++ b/auto.def
@@ -89,6 +89,8 @@ options {
   with-tokyocabinet:path    => "Location of TokyoCabinet"
 # System
   with-sysroot:path         => "Target system root"
+# Coverage testing
+  lcov=0                    => "Enable Coverage Testing"
 # Enable all options
   everything=0              => "Enable all options"
 }
@@ -102,7 +104,7 @@ if {1} {
   # Keep sorted, please.
   foreach opt {
     bdb doc everything fmemopen full-doc gdbm gnutls gpgme gss
-    homespool idn idn2 inotify kyotocabinet lmdb locales-fix lua mixmaster nls
+    homespool idn idn2 inotify kyotocabinet lcov lmdb locales-fix lua mixmaster nls
     notmuch pgp qdbm sasl smime ssl tokyocabinet
   } {
     define want-$opt [opt-bool $opt]
@@ -447,6 +449,13 @@ if {[get-define want-sasl]} {
   }
 }
 
+###############################################################################
+# Coverage Testing
+if {[get-define want-lcov]} {
+  define-append CFLAGS -fprofile-arcs -ftest-coverage
+  define-append LDFLAGS -fprofile-arcs -ftest-coverage
+}
+
 ###############################################################################
 # Lua
 if {[get-define want-lua]} {
-- 
2.50.0