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build: log the found compiler version if too old
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`configure` will log a warning if the detected compiler is not new
enough. Take some of the guesswork out of it by also logging the
version of the compiler that was detected.

PR-URL: #30028
Reviewed-By: Sam Roberts <[email protected]>
Reviewed-By: Colin Ihrig <[email protected]>
Reviewed-By: Luigi Pinca <[email protected]>
Reviewed-By: Anna Henningsen <[email protected]>
Reviewed-By: Jiawen Geng <[email protected]>
Reviewed-By: David Carlier <[email protected]>
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richardlau authored and MylesBorins committed Oct 23, 2019
1 parent 35bffcd commit 13f3d6c
Showing 1 changed file with 4 additions and 2 deletions.
6 changes: 4 additions & 2 deletions configure.py
Original file line number Diff line number Diff line change
Expand Up @@ -775,7 +775,8 @@ def check_compiler(o):
if not ok:
warn('failed to autodetect C++ compiler version (CXX=%s)' % CXX)
elif clang_version < (8, 0, 0) if is_clang else gcc_version < (6, 3, 0):
warn('C++ compiler too old, need g++ 6.3.0 or clang++ 8.0.0 (CXX=%s)' % CXX)
warn('C++ compiler (CXX=%s, %s) too old, need g++ 6.3.0 or clang++ 8.0.0' %
(CXX, ".".join(map(str, clang_version if is_clang else gcc_version))))

ok, is_clang, clang_version, gcc_version = try_check_compiler(CC, 'c')
if not ok:
Expand All @@ -784,7 +785,8 @@ def check_compiler(o):
# clang 3.2 is a little white lie because any clang version will probably
# do for the C bits. However, we might as well encourage people to upgrade
# to a version that is not completely ancient.
warn('C compiler too old, need gcc 4.2 or clang 3.2 (CC=%s)' % CC)
warn('C compiler (CC=%s, %s) too old, need gcc 4.2 or clang 3.2' %
(CC, ".".join(map(str, gcc_version))))

o['variables']['llvm_version'] = get_llvm_version(CC) if is_clang else '0.0'

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