0001-Fedora-bootstrap-and-extra-build-flags-support.patch

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -922,6 +922,9 @@
     target_link_libraries(zig2 LINK_PUBLIC version)
 endif()
 
+# Fedora customizations
+set(ZIG_EXTRA_BUILD_ARGS "" CACHE STRING "Extra flags for stage3 build")
+set(ZIG_EXECUTABLE "$<TARGET_FILE:zig2>" CACHE STRING "Compiler command to use for stage3 build")
 
 # "-Dno-langref" is hardcoded because stage2 builds lack the `@cImport`
 # feature, which some of the doctests rely on.
@@ -932,6 +935,8 @@
   "-Dtarget=${ZIG_TARGET_TRIPLE}"
   "-Dcpu=${ZIG_TARGET_MCPU}"
 
+  ${ZIG_EXTRA_BUILD_ARGS}
+
   -Denable-llvm
   "-Dconfig_h=${ZIG_CONFIG_H_OUT}"
 
@@ -978,8 +983,9 @@
 
 add_custom_command(
   OUTPUT "${PROJECT_BINARY_DIR}/stage3/bin/zig"
-  COMMAND zig2 build --prefix "${PROJECT_BINARY_DIR}/stage3" ${ZIG_BUILD_ARGS}
+  COMMAND ${ZIG_EXECUTABLE} build --prefix "${CMAKE_BINARY_DIR}/stage3" ${ZIG_BUILD_ARGS}
   COMMENT STATUS "Building stage3"
+  DEPENDS zigcpp
   WORKING_DIRECTORY "${ZIG2_WORKING_DIR}"
 )