shithub: rgbds

--- a/CMakeLists.txt

+++ b/CMakeLists.txt

@@ -66,14 +66,18 @@

 # Use versioning consistent with Makefile

 # the git revision is used but uses the fallback in an archive

-execute_process(COMMAND git describe --tags --dirty --always

-                OUTPUT_VARIABLE GIT_REV

-                ERROR_QUIET)

-string(STRIP "${GIT_REV}" GIT_REV)

+find_program(GIT git)

+if(GIT)

+  execute_process(COMMAND ${GIT} describe --tags --dirty --always

+                  WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}

+                  OUTPUT_VARIABLE GIT_REV OUTPUT_STRIP_TRAILING_WHITESPACE

+                  ERROR_QUIET)

+  message(STATUS "RGBDS version: ${GIT_REV}")

+else(GIT)

+  message(STATUS "Cannot determine RGBDS version (Git not installed), falling back")

+endif(GIT)

 include_directories("${PROJECT_SOURCE_DIR}/include")

-add_definitions(-DBUILD_VERSION_STRING="${GIT_REV}")

 set(CMAKE_C_STANDARD 11)

 set(CMAKE_C_STANDARD_REQUIRED True)

--- /dev/null

+++ b/src/.gitignore

@@ -1,0 +1,2 @@

+# Generated by CMake

+/.version.c

--- a/src/CMakeLists.txt

+++ b/src/CMakeLists.txt

@@ -6,10 +6,12 @@

 # SPDX-License-Identifier: MIT

+configure_file(version.c _version.c ESCAPE_QUOTES)

 set(common_src

     "error.c"

     "extern/getopt.c"

-    "version.c"

+    "_version.c"

 find_package(PkgConfig)

--- a/src/version.c

+++ b/src/version.c

@@ -12,6 +12,13 @@

 #include "helpers.h"

 #include "version.h"

+// This variable is passed via `-D` from the Makefile, but not from CMake

+// (in which `configure_file()` is used on this file to replace some syntax)

+#ifndef BUILD_VERSION_STRING

+// CMake-specific syntax here

+#define BUILD_VERSION_STRING "@GIT_REV@"

+#endif

 char const *get_package_version_string(void)

 	// The following conditional should be simplified by the compiler.