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Combine 'checkout branch' with 'apply patch'

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This commit is contained in:
jyelon
2025-06-11 21:45:51 -04:00
parent d074d2be05
commit b116131d16
1 changed files with 14 additions and 23 deletions
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37
build.py
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@@ -210,11 +210,21 @@ def store_system_config_in_globals(config):
# The actual build steps.
#
def checkout_correct_unreal_engine_branch():
def checkout_correct_unreal_engine_branch_and_apply_patch():
"""
This is the version of Unreal Engine that we're currently using.
Check out the correct branch, then apply a patch to the UnrealEngine
source code. Patch application consists of two steps: first, checkout clean,
unpatched versions of the files from git. Then, apply the patch to the clean code.
Note: don't git-commit the patch in UnrealEngine. Instead,
just let this script reapply this patch as necessary.
"""
shell(UNREALENGINE, "git checkout 5.3.1-release")
patch = Path(f"{INTEGRATION}/EnginePatches/EnginePatch")
patch_lines = patch.read_text().splitlines()
patched_files = [line[6:] for line in patch_lines if line.startswith("--- a/")]
for file in patched_files:
shell(UNREALENGINE, f"git show HEAD:{file} > {file}")
shell(UNREALENGINE, f"git checkout 5.3.1-release")
shell(UNREALENGINE, f"git apply {INTEGRATION}/EnginePatches/EnginePatch")
def generate_buildconfiguration_xml():
@@ -251,24 +261,6 @@ def generate_lpx_paths():
target.write_text(code)
def patch_unrealengine_source_code():
"""
Apply a patch to the UnrealEngine source code.
I tried to avoid patching Unreal engine, but it turns out there are a
few things that I just couldn't avoid having to fix.
Patch application consists of two steps: first, checkout clean, unpatched
versions of the files from git. Then, apply the patch to the clean code.
Note: don't git-commit the patch in UnrealEngine. Instead,
just let this script reapply this patch as necessary.
"""
patch = Path(f"{INTEGRATION}/EnginePatches/EnginePatch")
patch_lines = patch.read_text().splitlines()
patched_files = [line[6:] for line in patch_lines if line.startswith("--- a/")]
for file in patched_files:
shell(UNREALENGINE, f"git show HEAD:{file} > {file}")
shell(UNREALENGINE, f"git apply {INTEGRATION}/EnginePatches/EnginePatch")
def generate_integration_uproject():
"""
Generate integration.uproject
@@ -379,10 +371,9 @@ store_system_config_in_globals(CONFIG)
os.chdir(f"{INTEGRATION}/EnginePatches")
if MODE == "all":
checkout_correct_unreal_engine_branch()
checkout_correct_unreal_engine_branch_and_apply_patch()
generate_buildconfiguration_xml()
generate_lpx_paths()
patch_unrealengine_source_code()
generate_integration_uproject()
run_unrealengine_setup_bat()
build_unrealbuildtool()