From a04ba55790e31c692ca4b5a7456967be83707aa2 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?R=C3=A9mi=20Verschelde?= Date: Sat, 11 May 2024 15:19:29 +0200 Subject: [PATCH] SCons: Bump minimum supported GCC version to GCC 9 - GCC 7 supports C++17 but seems to have breaking regressions, see #79352. - GCC 8 broke C++17 guaranteed copy elision support, fixed in 8.4, but... - GCC 9 is old enough (2022) to use as a baseline and stop dealing with unmaintained and less efficient compiler versions. --- SConstruct | 20 +++++--------------- 1 file changed, 5 insertions(+), 15 deletions(-) diff --git a/SConstruct b/SConstruct index cfedcc84edfc0..7505797952649 100644 --- a/SConstruct +++ b/SConstruct @@ -621,22 +621,12 @@ if methods.using_gcc(env): "Couldn't detect compiler version, skipping version checks. " "Build may fail if the compiler doesn't support C++17 fully." ) - # GCC 8 before 8.4 has a regression in the support of guaranteed copy elision - # which causes a build failure: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86521 - elif cc_version_major == 8 and cc_version_minor < 4: + elif cc_version_major < 9: print_error( - "Detected GCC 8 version < 8.4, which is not supported due to a " - "regression in its C++17 guaranteed copy elision support. Use a " - 'newer GCC version, or Clang 6 or later by passing "use_llvm=yes" ' - "to the SCons command line." - ) - Exit(255) - elif cc_version_major < 7: - print_error( - "Detected GCC version older than 7, which does not fully support " - "C++17. Supported versions are GCC 7, 9 and later. Use a newer GCC " - 'version, or Clang 6 or later by passing "use_llvm=yes" to the ' - "SCons command line." + "Detected GCC version older than 9, which does not fully support " + "C++17, or has bugs when compiling Godot. Supported versions are 9 " + "and later. Use a newer GCC version, or Clang 6 or later by passing " + '"use_llvm=yes" to the SCons command line.' ) Exit(255) elif cc_version_metadata1 == "win32":