3 files changed, 12 insertions, 1 deletions

diff --git a/.gitignore b/.gitignore
index 81d3ed2..8c6bce0 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,6 +9,10 @@
 *.o
 *.dylib
 
+*.gcda
+*.gcno
+*.gcov
+
 /example
 /example64
 /examplesh
diff --git a/Makefile.in b/Makefile.in
index 1b8bf3f..9ac0406 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -232,6 +232,7 @@ clean:
            libz.* foo.gz so_locations \
            _match.s maketree contrib/infback9/*.o
         rm -rf objs
+        rm -f *.gcda *.gcno *.gcov
 
 maintainer-clean: distclean
 distclean: clean zconf zconf.h.cmakein docs
diff --git a/configure b/configure
index 672b24f..d15c03b 100755
--- a/configure
+++ b/configure
@@ -55,6 +55,7 @@ mandir=${mandir-'${prefix}/share/man'}
 shared_ext='.so'
 shared=1
 solo=0
+cover=0
 zprefix=0
 build64=0
 gcc=0
@@ -85,6 +86,7 @@ case "$1" in
     -s* | --shared | --enable-shared) shared=1; shift ;;
     -t | --static) shared=0; shift ;;
     --solo) solo=1; shift ;;
+    --cover) cover=1; shift ;;
     -z* | --zprefix) zprefix=1; shift ;;
     -6* | --64) build64=1; shift ;;
     -a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;;
@@ -345,6 +347,10 @@ OBJC='$(OBJZ)'
 PIC_OBJC='$(PIC_OBJZ)'
 fi
 
+if test $cover -eq 1; then
+  CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage"
+fi
+
 cat > $test.c <<EOF
 #include <stdio.h>
 #include <stdarg.h>
@@ -578,7 +584,7 @@ case $CFLAGS in
     fi ;;
 esac
 
-rm -f $test.[co] $test $test$shared_ext
+rm -f $test.[co] $test $test$shared_ext $test.gcno
 
 # udpate Makefile
 sed < Makefile.in "