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Updated compiler version detection

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This fixes multiple issues/inconsistencies around  `get_compiler_version()`:
* With no shell allocated, launching the compiler could fail even
  with proper paths being set.
* The return value was described as "an array of version numbers as ints",
  but the function actually returned a `Dictionary` (or `None`).
* Not all calls were properly handling a `None` return value in case of errors.
  On Windows this broke compiling for me since #81869 with default settings.
* Some calls defined inconsistent defaults/fallbacks (`0` or `-1`).

(cherry picked from commit 426e18fd37)
This commit is contained in:
Mario Liebisch
2023-09-25 21:08:36 +02:00
committed by Yuri Sizov
parent 08bc3570ae
commit 5bb54d3184
4 changed files with 31 additions and 21 deletions
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2
platform/linuxbsd/detect.py
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@@ -106,7 +106,7 @@ def configure(env: "Environment"):
print("Using linker program: " + env["linker"])
if env["linker"] == "mold" and using_gcc(env): # GCC < 12.1 doesn't support -fuse-ld=mold.
cc_version = get_compiler_version(env)
cc_semver = (int(cc_version["major"]), int(cc_version["minor"]))
cc_semver = (cc_version["major"], cc_version["minor"])
if cc_semver < (12, 1):
found_wrapper = False
for path in ["/usr/libexec", "/usr/local/libexec", "/usr/lib", "/usr/local/lib"]: