From 58ba255e29bad8a3d7e660620d9b0201c42a3fdc Mon Sep 17 00:00:00 2001
From: Robin Watts <Robin.Watts@artifex.com>
Date: Tue, 22 Mar 2016 15:59:15 +0000
Subject: Add Google Perf Tools build.

"make build=gperf" will now build and link the google perf tools
library into mutool. When mutool is then run, a mutool.prof file
is dropped into the current directory that can be analysed.
---
 Makerules             |  3 +++
 source/tools/mutool.c | 18 ++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/Makerules b/Makerules
index f9f2b06f..c73d8242 100644
--- a/Makerules
+++ b/Makerules
@@ -32,6 +32,9 @@ ifeq "$(HAVE_LIBDL)" "yes"
 CFLAGS += -DHAVE_LIBDL
 LIBS += -ldl
 endif
+else ifeq "$(build)" "gperf"
+CFLAGS += -pipe -O2 -DNDEBUG -fomit-frame-pointer -DGPERF
+LIBS += -lprofiler
 else
 $(error unknown build setting: '$(build)')
 endif
diff --git a/source/tools/mutool.c b/source/tools/mutool.c
index 6d2cfa40..1f163b21 100644
--- a/source/tools/mutool.c
+++ b/source/tools/mutool.c
@@ -41,12 +41,30 @@ namematch(const char *end, const char *start, const char *match)
 	return ((end-len >= start) && (strncmp(end-len, match, len) == 0));
 }
 
+#ifdef GPERF
+#include "gperftools/profiler.h"
+
+static int profiled_main(int argc, char **argv);
+
+int main(int argc, char **argv)
+{
+	int ret;
+	ProfilerStart("mutool.prof");
+	ret = profiled_main(argc, argv);
+	ProfilerStop();
+	return ret;
+}
+
+static int profiled_main(int argc, char **argv)
+#else
 int main(int argc, char **argv)
+#endif
 {
 	char *start, *end;
 	char buf[32];
 	int i;
 
+	
 	if (argc == 0)
 	{
 		fprintf(stderr, "No command name found!\n");
-- 
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