Support link-time optimization.

3 files changed, 4 insertions, 7 deletions

diff --git a/Makefile b/Makefile
index be9dc32..5c0e04a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,4 @@
-OPTIMIZE ?= -O3
+OPTIMIZE ?= -O3 -flto
 DEBUG ?= -g
 
 AR ?= ar
@@ -21,9 +21,9 @@ endif
 $(info Version ${VERSION})
 
 define GITTAGCPP =
-#include <string>
+#include "git-tag.h"
 
-std::string GIT_TAG = "$(subst ",\",${VERSION})";
+const char *GIT_TAG = "$(subst ",\",${VERSION})";
 endef
 export GITTAGCPP
 
diff --git a/git-tag.h b/git-tag.h
index 280f0c7..0f36b73 100644
--- a/git-tag.h
+++ b/git-tag.h
@@ -1,5 +1,3 @@
 #pragma once
 
-#include <string>
-
-extern const std::string GIT_TAG;
+extern const char *GIT_TAG;
diff --git a/main.cpp b/main.cpp
index 4bd455a..e1ec736 100644
--- a/main.cpp
+++ b/main.cpp
@@ -2,7 +2,6 @@
 #include <iostream>
 #include <memory>
 #include <optional>
-#include <string>
 #include <utility>
 
 #include "aisa/aisa.h"