From c5e54ca6234d9568e1185e1ff92f4d04c41faa6c Mon Sep 17 00:00:00 2001
From: Andrei Karas <akaras@inbox.ru>
Date: Fri, 24 Apr 2015 02:11:35 +0300
Subject: Add configure option for enable/disable CilkPlus support.

By default disabled.
---
 configure.ac      | 11 +++++++++++
 src/Makefile.am   |  5 +++++
 src/localconsts.h | 25 ++++++++++++++++++++++---
 src/logger.h      | 27 +++++++++++++++++++++------
 4 files changed, 59 insertions(+), 9 deletions(-)

diff --git a/configure.ac b/configure.ac
index dbf134319..d8abded8c 100755
--- a/configure.ac
+++ b/configure.ac
@@ -368,6 +368,17 @@ esac],[googleprofiler_enabled=false])
 
 AM_CONDITIONAL(ENABLE_GOOGLE_PROFILER, test x$googleprofiler_enabled = xtrue)
 
+# Enable cilk plus
+AC_ARG_ENABLE(cilkplus,
+[  --enable-cilkplus    Turn on parallelisation with CilkPlus],
+[case "${enableval}" in
+  yes) cilkplus_enabled=true ;;
+  no)  cilkplus_enabled=false ;;
+  *) AC_MSG_ERROR(bad value ${enableval} for --enable-cilkplus) ;;
+esac],[cilkplus_enabled=false])
+
+AM_CONDITIONAL(ENABLE_CILKPLUS, test x$cilkplus_enabled = xtrue)
+
 AC_CONFIG_FILES([
 manaplus.spec
 Makefile
diff --git a/src/Makefile.am b/src/Makefile.am
index c9951189e..8f6f457e7 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -28,6 +28,11 @@ else
 manaplus_SOURCES =
 endif
 
+if ENABLE_CILKPLUS
+manaplus_CXXFLAGS += -DENABLE_CILKPLUS -fcilkplus -lcilkrts
+dyecmd_CXXFLAGS += -DENABLE_CILKPLUS -fcilkplus -lcilkrts
+endif
+
 dyecmd_CXXFLAGS += -DDYECMD
 dyecmd_SOURCES = gui/cliprect.cpp \
 	      gui/color.cpp \
diff --git a/src/localconsts.h b/src/localconsts.h
index 1c43ebc58..4c4827d70 100644
--- a/src/localconsts.h
+++ b/src/localconsts.h
@@ -33,6 +33,10 @@
 #endif
 #endif
 
+#define GCC_VERSION (__GNUC__ * 10000 \
+    + __GNUC_MINOR__ * 100 \
+    + __GNUC_PATCHLEVEL__)
+
 #if !defined(__GXX_EXPERIMENTAL_CXX0X__)
 #undef nullptr
 #define nullptr 0
@@ -43,9 +47,6 @@
 #define A_DELETE(func)
 #define A_DELETE_COPY(func)
 #else
-#define GCC_VERSION (__GNUC__ * 10000 \
-    + __GNUC_MINOR__ * 100 \
-    + __GNUC_PATCHLEVEL__)
 #if GCC_VERSION < 40700
 #define final
 #define override
@@ -80,6 +81,20 @@
 #define gnu_printf printf
 #endif
 
+#ifdef __GNUC__
+#ifdef ENABLE_CILKPLUS
+#if GCC_VERSION < 50000
+#define cilk_for for
+#elif GCC_VERSION < 49000
+#define cilk_for for
+#define cilk_spawn
+#endif  // GCC_VERSION < 50000
+#else  // ENABLE_CILKPLUS
+#define cilk_for for
+#define cilk_spawn
+#endif  // ENABLE_CILKPLUS
+#endif  // __GNUC__
+
 #define notfinal
 
 #define FOR_EACH(type, iter, array) for (type iter = array.begin(), \
@@ -142,3 +157,7 @@
 #ifdef HAVE_CONFIG_H
 #include "config.h"
 #endif
+
+#ifdef ENABLE_CILKPLUS
+#include <cilk/cilk.h>
+#endif
diff --git a/src/logger.h b/src/logger.h
index 9e82670ad..40ea191c2 100644
--- a/src/logger.h
+++ b/src/logger.h
@@ -84,11 +84,19 @@ class Logger final
         void log(const char *const log_text, ...)
 #ifdef __GNUC__
 #ifdef __OpenBSD__
+
             __attribute__((__format__(printf, 2, 3)))
-#else
+#else  // __OpenBSD__
+
+#ifdef ENABLE_CILKPLUS
+            __attribute__((__format__(gnu_printf, 1, 2)))
+#else  // ENABLE_CILKPLUS
+
             __attribute__((__format__(gnu_printf, 2, 3)))
-#endif
-#endif
+#endif  // ENABLE_CILKPLUS
+
+#endif  // __OpenBSD__
+#endif  // __GNUC__
             ;
 
         /**
@@ -98,10 +106,17 @@ class Logger final
 #ifdef __GNUC__
 #ifdef __OpenBSD__
             __attribute__((__format__(printf, 2, 3)))
-#else
+#else  // __OpenBSD__
+
+#ifdef ENABLE_CILKPLUS
+            __attribute__((__format__(gnu_printf, 1, 2)))
+#else  // ENABLE_CILKPLUS
+
             __attribute__((__format__(gnu_printf, 2, 3)))
-#endif
-#endif
+#endif  // ENABLE_CILKPLUS
+
+#endif  // __OpenBSD__
+#endif  // __GNUC__
             ;
 
         /**
-- 
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