virtualx-engine/modules/jpg/SCsub

#!/usr/bin/env python

Import("env")
Import("env_modules")

env_jpg = env_modules.Clone()

# Thirdparty source files

thirdparty_obj = []

# Not unbundled for now as they are not commonly available as shared library
thirdparty_dir = "#thirdparty/jpeg-compressor/"
thirdparty_sources = [
    "jpgd.cpp",
]
thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]

env_jpg.Prepend(CPPPATH=[thirdparty_dir])

env_thirdparty = env_jpg.Clone()
env_thirdparty.disable_warnings()
env_thirdparty.add_source_files(thirdparty_obj, thirdparty_sources)
env.modules_sources += thirdparty_obj

# Godot source files

module_obj = []

env_jpg.add_source_files(module_obj, "*.cpp")
env.modules_sources += module_obj

# Needed to force rebuilding the module files when the thirdparty library is updated.
env.Depends(module_obj, thirdparty_obj)
SCsub: Add python shebang as a hint for syntax highlighting Also switch existing shebangs to "better" /usr/bin/env python. 2016-10-17 08:50:25 +02:00			`#!/usr/bin/env python`

SCons: Format buildsystem files with psf/black Configured for a max line length of 120 characters. psf/black is very opinionated and purposely doesn't leave much room for configuration. The output is mostly OK so that should be fine for us, but some things worth noting: - Manually wrapped strings will be reflowed, so by using a line length of 120 for the sake of preserving readability for our long command calls, it also means that some manually wrapped strings are back on the same line and should be manually merged again. - Code generators using string concatenation extensively look awful, since black puts each operand on a single line. We need to refactor these generators to use more pythonic string formatting, for which many options are available (`%`, `format` or f-strings). - CI checks and a pre-commit hook will be added to ensure that future buildsystem changes are well-formatted. 2020-03-30 08:28:32 +02:00			`Import("env")`
			`Import("env_modules")`
jpg: Make it a module and split jpgd thirdparty files Similar rationale as in previous commit. 2016-10-10 00:03:33 +02:00
modules: Clone env in each module This allows to pass include paths and flags only to a given thirdparty library, thus preventing conflicts between their files (e.g. between opus and openssl which both provide modes.h. This also has the nice effect of making the compilation command smaller for each module as it no longer related to all other modules, only the final linking brings them together. This however requires adding manually the ogg include path in opus and vorbis when building against the builtin ogg, since it is no longer in the global env. Also simplified template 'thirdparty_<module>_sources' to 'thirdparty_sources'. "Core" modules like cscript, gdscript, gridmap, ik and virtual_script still use the main env_modules, but it could be changed if need be. 2016-10-13 18:54:00 +02:00			`env_jpg = env_modules.Clone()`

jpg: Make it a module and split jpgd thirdparty files Similar rationale as in previous commit. 2016-10-10 00:03:33 +02:00			`# Thirdparty source files`
SCons: Add explicit dependencies on thirdparty code in cloned env Since we clone the environments to build thirdparty code, we don't get an explicit dependency on the build objects produced by that environment. So when we update thirdparty code, Godot code using it is not necessarily rebuilt (I think it is for changed headers, but not for changed .c/.cpp files), which can lead to an invalid compilation output (linking old Godot .o files with a newer, potentially ABI breaking version of thirdparty code). This was only seen as really problematic with bullet updates (leading to crashes when rebuilding Godot after a bullet update without cleaning .o files), but it's safer to fix it everywhere, even if it's a LOT of hacky boilerplate. 2020-12-17 16:01:36 +01:00
			`thirdparty_obj = []`

jpg: Make it a module and split jpgd thirdparty files Similar rationale as in previous commit. 2016-10-10 00:03:33 +02:00			`# Not unbundled for now as they are not commonly available as shared library`
			`thirdparty_dir = "#thirdparty/jpeg-compressor/"`
modules: Clone env in each module This allows to pass include paths and flags only to a given thirdparty library, thus preventing conflicts between their files (e.g. between opus and openssl which both provide modes.h. This also has the nice effect of making the compilation command smaller for each module as it no longer related to all other modules, only the final linking brings them together. This however requires adding manually the ogg include path in opus and vorbis when building against the builtin ogg, since it is no longer in the global env. Also simplified template 'thirdparty_<module>_sources' to 'thirdparty_sources'. "Core" modules like cscript, gdscript, gridmap, ik and virtual_script still use the main env_modules, but it could be changed if need be. 2016-10-13 18:54:00 +02:00			`thirdparty_sources = [`
style: Start applying PEP8 to Python files, indentation issues Done with `autopep8 --select=E1`, fixes: - E101 - Reindent all lines. - E112 - Fix under-indented comments. - E113 - Fix over-indented comments. - E115 - Fix under-indented comments. - E116 - Fix over-indented comments. - E121 - Fix a badly indented line. - E122 - Fix a badly indented line. - E123 - Fix a badly indented line. - E124 - Fix a badly indented line. - E125 - Fix indentation undistinguish from the next logical line. - E126 - Fix a badly indented line. - E127 - Fix a badly indented line. - E128 - Fix a badly indented line. - E129 - Fix a badly indented line. 2016-10-30 18:44:57 +01:00			`"jpgd.cpp",`
jpg: Make it a module and split jpgd thirdparty files Similar rationale as in previous commit. 2016-10-10 00:03:33 +02:00			`]`
modules: Clone env in each module This allows to pass include paths and flags only to a given thirdparty library, thus preventing conflicts between their files (e.g. between opus and openssl which both provide modes.h. This also has the nice effect of making the compilation command smaller for each module as it no longer related to all other modules, only the final linking brings them together. This however requires adding manually the ogg include path in opus and vorbis when building against the builtin ogg, since it is no longer in the global env. Also simplified template 'thirdparty_<module>_sources' to 'thirdparty_sources'. "Core" modules like cscript, gdscript, gridmap, ik and virtual_script still use the main env_modules, but it could be changed if need be. 2016-10-13 18:54:00 +02:00			`thirdparty_sources = [thirdparty_dir + file for file in thirdparty_sources]`
jpg: Make it a module and split jpgd thirdparty files Similar rationale as in previous commit. 2016-10-10 00:03:33 +02:00
SCons: Always use env.Prepend for CPPPATH Include paths are processed from left to right, so we use Prepend to ensure that paths to bundled thirdparty files will have precedence over system paths (e.g. `/usr/include` should have lowest priority). 2019-04-30 13:12:02 +02:00			`env_jpg.Prepend(CPPPATH=[thirdparty_dir])`
jpg: Make it a module and split jpgd thirdparty files Similar rationale as in previous commit. 2016-10-10 00:03:33 +02:00
SCons: Build thirdparty code in own env, disable warnings Also remove unnecessary `Export('env')` in other SCsubs, Export should only be used when exporting new objects. 2018-09-28 13:29:52 +02:00			`env_thirdparty = env_jpg.Clone()`
			`env_thirdparty.disable_warnings()`
SCons: Add explicit dependencies on thirdparty code in cloned env Since we clone the environments to build thirdparty code, we don't get an explicit dependency on the build objects produced by that environment. So when we update thirdparty code, Godot code using it is not necessarily rebuilt (I think it is for changed headers, but not for changed .c/.cpp files), which can lead to an invalid compilation output (linking old Godot .o files with a newer, potentially ABI breaking version of thirdparty code). This was only seen as really problematic with bullet updates (leading to crashes when rebuilding Godot after a bullet update without cleaning .o files), but it's safer to fix it everywhere, even if it's a LOT of hacky boilerplate. 2020-12-17 16:01:36 +01:00			`env_thirdparty.add_source_files(thirdparty_obj, thirdparty_sources)`
			`env.modules_sources += thirdparty_obj`

			`# Godot source files`

			`module_obj = []`

			`env_jpg.add_source_files(module_obj, "*.cpp")`
			`env.modules_sources += module_obj`
SCons: Build thirdparty code in own env, disable warnings Also remove unnecessary `Export('env')` in other SCsubs, Export should only be used when exporting new objects. 2018-09-28 13:29:52 +02:00
SCons: Add explicit dependencies on thirdparty code in cloned env Since we clone the environments to build thirdparty code, we don't get an explicit dependency on the build objects produced by that environment. So when we update thirdparty code, Godot code using it is not necessarily rebuilt (I think it is for changed headers, but not for changed .c/.cpp files), which can lead to an invalid compilation output (linking old Godot .o files with a newer, potentially ABI breaking version of thirdparty code). This was only seen as really problematic with bullet updates (leading to crashes when rebuilding Godot after a bullet update without cleaning .o files), but it's safer to fix it everywhere, even if it's a LOT of hacky boilerplate. 2020-12-17 16:01:36 +01:00			`# Needed to force rebuilding the module files when the thirdparty library is updated.`
			`env.Depends(module_obj, thirdparty_obj)`