From 4a7d93f24b2dce3a41d75da752aa1e41bfc62214 Mon Sep 17 00:00:00 2001
From: Avril <flanchan@cumallover.me>
Date: Sun, 29 Nov 2020 21:10:44 +0000
Subject: [PATCH] update makefile

---
 Makefile            | 7 ++++++-
 include/shuffle.hpp | 1 +
 include/shuffle3.h  | 2 ++
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index e7f4f4e..900aa11 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,12 @@ INCLUDE = include
 
 PROJECT=shuffle3
 
-COMMON_FLAGS = -Wall -pedantic $(addprefix -I,$(INCLUDE)) -fno-strict-aliasing
+# Currently supported:
+#	_FS_SPILL_BUFFER:	Use file backed buffer instead of memory backed one for unshuffling. See `shuffle3.h`.
+#	DEBUG:		Pretend we're building a debug release even though we're not. Will enable additional output messages and may interfere with some optimisations
+FEATURE_FLAGS?=
+
+COMMON_FLAGS = $(addprefix -D,$(FEATURE_FLAGS)) -Wall -pedantic $(addprefix -I,$(INCLUDE)) -fno-strict-aliasing
 
 OPT_FLAGS?= -march=native -fgraphite -fopenmp -floop-parallelize-all -ftree-parallelize-loops=4 \
 	    -floop-interchange -ftree-loop-distribution -floop-strip-mine -floop-block \
diff --git a/include/shuffle.hpp b/include/shuffle.hpp
index 7486bef..ba651ad 100644
--- a/include/shuffle.hpp
+++ b/include/shuffle.hpp
@@ -29,6 +29,7 @@ namespace rng {
 		if(!span.size()) return;
 
 #ifdef _FS_SPILL_BUFFER
+#warning "_FS_SPILL_BUFFER is still experimental"
 		file_vector<std::size_t> rng_values(span.size());
 #else
 		std::vector<std::size_t> rng_values(span.size());
diff --git a/include/shuffle3.h b/include/shuffle3.h
index af16299..f3ad0b2 100644
--- a/include/shuffle3.h
+++ b/include/shuffle3.h
@@ -18,6 +18,8 @@ extern "C" {
 
 //#define _FS_SPILL_BUFFER /* Use a file-backed buffer when unshuffling in cases of too high memory usage. Will cause massive slowdowns but can stop OOMs when unshuffling large files */
 
+//
+
 extern const char* _prog_name;
 
 #ifdef __cplusplus