From acc8dae2b33c24ffe6ff445b7ba387c82af10aa2 Mon Sep 17 00:00:00 2001
From: Michael Maltese <michaeljosephmaltese@gmail.com>
Date: Sun, 5 Feb 2017 22:26:44 -0800
Subject: [PATCH] CMake: use configure_file to generate scmrev.h

The built-in `configure_file` command correctly handles the case where
none of the variables change and scmrev.h doesn't need to be rebuilt.
This saves a full re-link of Dolphin any time CMake is re-run.
---
 CMakeLists.txt                 | 11 ++++-------
 Source/Core/Common/scmrev.h.in |  5 +++++
 2 files changed, 9 insertions(+), 7 deletions(-)
 create mode 100644 Source/Core/Common/scmrev.h.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7090cea516..25ad0a3584 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -941,13 +941,10 @@ else()
 	set(DOLPHIN_WC_IS_STABLE "0")
 endif()
 
-file(WRITE ${PROJECT_BINARY_DIR}/Source/Core/Common/scmrev.h
-	"#define SCM_REV_STR \"" ${DOLPHIN_WC_REVISION} "\"\n"
-	"#define SCM_DESC_STR \"" ${DOLPHIN_WC_DESCRIBE} "\"\n"
-	"#define SCM_BRANCH_STR \"" ${DOLPHIN_WC_BRANCH} "\"\n"
-	"#define SCM_IS_MASTER " ${DOLPHIN_WC_IS_STABLE} "\n"
-	"#define SCM_DISTRIBUTOR_STR \"" ${DISTRIBUTOR} "\"\n"
-	)
+configure_file(
+	"${PROJECT_SOURCE_DIR}/Source/Core/Common/scmrev.h.in"
+	"${PROJECT_BINARY_DIR}/Source/Core/Common/scmrev.h"
+)
 include_directories("${PROJECT_BINARY_DIR}/Source/Core")
 
 ########################################
diff --git a/Source/Core/Common/scmrev.h.in b/Source/Core/Common/scmrev.h.in
new file mode 100644
index 0000000000..6be4c461bb
--- /dev/null
+++ b/Source/Core/Common/scmrev.h.in
@@ -0,0 +1,5 @@
+#define SCM_REV_STR "${DOLPHIN_WC_REVISION}"
+#define SCM_DESC_STR "${DOLPHIN_WC_DESCRIBE}"
+#define SCM_BRANCH_STR "${DOLPHIN_WC_BRANCH}"
+#define SCM_IS_MASTER ${DOLPHIN_WC_IS_STABLE}
+#define SCM_DISTRIBUTOR_STR "${DISTRIBUTOR}"