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SCons: Use default env["ENV"] and prepend PATH to it

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This fixes a regression from #46774 where `env["ENV"]` would miss some
important env variables on Windows, such as `SystemRoot`, `PATHEXT`, etc.

So we go back to the previous setup (letting SCons initialize `env["ENV"]`
as it sees fit for the host OS) but use `PrependENVPath` instead of
`AppendENVPath` to preserve the intended fix from #46774.

Fixes #46790 for 3.2.
This commit is contained in:
Rémi Verschelde 2021-03-09 09:32:30 +01:00
parent 0ddba5b712
commit 0431241935
1 changed files with 9 additions and 8 deletions
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17
SConstruct
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@ -61,14 +61,15 @@ elif platform_arg == "javascript":
# Use generic POSIX build toolchain for Emscripten.
custom_tools = ["cc", "c++", "ar", "link", "textfile", "zip"]
env_base = Environment(
ENV={
"PATH": os.getenv("PATH"),
"PKG_CONFIG_PATH": os.getenv("PKG_CONFIG_PATH"),
"TERM": os.getenv("TERM"),
},
tools=custom_tools,
)
# We let SCons build its default ENV as it includes OS-specific things which we don't
# want to have to pull in manually.
# Then we prepend PATH to make it take precedence, while preserving SCons' own entries.
env_base = Environment(tools=custom_tools)
env_base.PrependENVPath("PATH", os.getenv("PATH"))
env_base.PrependENVPath("PKG_CONFIG_PATH", os.getenv("PKG_CONFIG_PATH"))
if "TERM" in os.environ: # Used for colored output.
env_base["ENV"]["TERM"] = os.environ["TERM"]
env_base.disabled_modules = []
env_base.use_ptrcall = False
env_base.module_version_string = ""