fixed `ARCH` detection in `cmake`

CMakeLists.txt

@@ -2,6 +2,12 @@ cmake_minimum_required(VERSION 3.14...3.25)
 
 set (CXX_STANDARD 23)
 
+project(
+	qr
+	VERSION 1.1.0
+	LANGUAGES CXX
+)
+
 if (DEFINED ENV{ARCH})
 	set(ARCH $ENV{ARCH})
 else()
@@ -10,12 +16,6 @@ endif()
 
 set(EXE_NAME "qr_${CMAKE_PROJECT_VERSION}-${ARCH}")
 
-project(
-	qr
-	VERSION 1.1.0
-	LANGUAGES CXX
-)
-
 message(STATUS "ARCH:: ${ARCH}")
 
 configure_file(main.cpp main_substitute.cpp)
@@ -36,4 +36,4 @@ add_custom_command(
 
 install(TARGETS qr RUNTIME DESTINATION bin)
 install(PROGRAMS build/${EXE_NAME} DESTINATION bin RENAME qr)
-install(FILES build/qr.7.gz DESTINATION /usr/local/share/man/man7/)
+install(FILES build/qr.7.gz DESTINATION /usr/local/share/man/man7/)

main.cpp

@@ -180,4 +180,4 @@ int main(int argc, char* argv[]) {
 	qr->render(format);
 
 	return 0;
-}
+}