From dd986fefd31de76ec62f91a050b031ca1e7d93b4 Mon Sep 17 00:00:00 2001
From: Robin Mueller <robin.mueller.m@gmail.com>
Date: Tue, 10 May 2022 11:51:25 +0200
Subject: [PATCH] experimenting with PRE_BUILD command

---
 CMakeLists.txt            | 9 ++++++++-
 FSFWVersion.h.in          | 0
 src/fsfw/FSFWVersion.h.in | 2 +-
 src/fsfw/version.cpp      | 2 +-
 4 files changed, 10 insertions(+), 3 deletions(-)
 create mode 100644 FSFWVersion.h.in

diff --git a/CMakeLists.txt b/CMakeLists.txt
index aa872f6e..7dc7f2a2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -25,7 +25,7 @@ if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/.git)
         list(GET FSFW_GIT_INFO 1 FSFW_VERSION)
         list(GET FSFW_GIT_INFO 2 FSFW_SUBVERSION)
         list(GET FSFW_GIT_INFO 3 FSFW_REVISION)
-        list(GET FSFW_GIT_INFO 4 FSFW_VERSION_CST_GIT_SHA1)
+        list(GET FSFW_GIT_INFO 4 FSFW_VCS_INFO)
         if(NOT FSFW_VERSION)
             set(FSFW_VERSION ${FSFW_VERSION_IF_GIT_FAILS})
         endif()
@@ -448,6 +448,13 @@ string(CONCAT POST_BUILD_COMMENT
     "######################################################################\n"
 )
 
+add_custom_command(
+    TARGET ${LIB_FSFW_NAME}
+    PRE_BUILD
+    COMMAND ${CMAKE_COMMAND} -E touch ${CMAKE_SOURCE_DIR}/FSFWVersion.h.in
+    COMMENT "${MSG_PREFIX} Updating FSFWVersion.h"
+)
+
 add_custom_command(
    TARGET ${LIB_FSFW_NAME}
    POST_BUILD
diff --git a/FSFWVersion.h.in b/FSFWVersion.h.in
new file mode 100644
index 00000000..e69de29b
diff --git a/src/fsfw/FSFWVersion.h.in b/src/fsfw/FSFWVersion.h.in
index 3b93bee5..caff1efb 100644
--- a/src/fsfw/FSFWVersion.h.in
+++ b/src/fsfw/FSFWVersion.h.in
@@ -6,6 +6,6 @@ static constexpr int FSFW_VERSION_MAJOR = @FSFW_VERSION@;
 static constexpr int FSFW_VERSION_MINOR = @FSFW_SUBVERSION@;
 static constexpr int FSFW_VERSION_REVISION = @FSFW_REVISION@;
 // Also contains CST (Commits since tag) information
-static const char FSFW_VERSION_CST_GIT_SHA1[] = "@FSFW_VERSION_CST_GIT_SHA1@";
+static const char FSFW_VCS_INFO[] = "@FSFW_VCS_INFO@";
 
 #endif /* FSFW_VERSION_H_ */
diff --git a/src/fsfw/version.cpp b/src/fsfw/version.cpp
index 050a275d..050187a9 100644
--- a/src/fsfw/version.cpp
+++ b/src/fsfw/version.cpp
@@ -13,7 +13,7 @@
 #endif
 
 const fsfw::Version fsfw::FSFW_VERSION = {FSFW_VERSION_MAJOR, FSFW_VERSION_MINOR,
-                                          FSFW_VERSION_REVISION, FSFW_VERSION_CST_GIT_SHA1};
+                                          FSFW_VERSION_REVISION, FSFW_VCS_INFO};
 
 fsfw::Version::Version(int major, int minor, int revision, const char* addInfo)
     : major(major), minor(minor), revision(revision), addInfo(addInfo) {}