[PATCH] Makefile: add cppcheck target

Add cppcheck target to Makefile. Cppcheck is a static
analysis tool for C/C++ code. Cppcheck primarily detects
the types of bugs that the compilers normally do not detect.
It is an useful target for doing QA analysis.

Signed-off-by: Elia Pinto <redacted>
---
 Makefile      |    6 ++++++
 config.mak.in |    1 +
 2 files changed, 7 insertions(+)

diff --git a/Makefile b/Makefile
index dddaf4f..1d25a70 100644
--- a/Makefile
+++ b/Makefile

@@ -2602,3 +2602,9 @@ cover_db: coverage-report
 cover_db_html: cover_db
 	cover -report html -outputdir cover_db_html cover_db
 
+### cppcheck static coverage analysis
+#
+.PHONY: cppcheck
+
+cppcheck:
+	cppcheck --enable=all -q $(top_srcdir)

diff --git a/config.mak.in b/config.mak.in
index e6a6d0f..86b95fb 100644
--- a/config.mak.in
+++ b/config.mak.in

@@ -22,3 +22,4 @@ docdir = @docdir@
 
 mandir = @mandir@
 htmldir = @htmldir@
+top_srcdir = @top_srcdir@

-- 
1.7.10.4