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configure: fix comparing double-digit versions #21183

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configure: fix comparing double-digit versions #21183

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configure: fix comparing double-digit versions
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@mistydemeo
mistydemeo committed Jun 7, 2018
commit 5759b3e877ee7014457567760dd97886f11c3be4
8 changes: 4 additions & 4 deletions configure
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Original file line number Diff line number Diff line change
Expand Up @@ -612,8 +612,8 @@ def try_check_compiler(cc, lang):

values = (proc.communicate()[0].split() + ['0'] * 7)[0:7]
is_clang = values[0] == '1'
gcc_version = '%s.%s.%s' % tuple(values[1:1+3])
clang_version = '%s.%s.%s' % tuple(values[4:4+3])
gcc_version = tuple(values[1:1+3])
clang_version = tuple(values[4:4+3])

return (True, is_clang, clang_version, gcc_version)

Expand Down Expand Up @@ -707,13 +707,13 @@ def check_compiler(o):
ok, is_clang, clang_version, gcc_version = try_check_compiler(CXX, 'c++')
if not ok:
warn('failed to autodetect C++ compiler version (CXX=%s)' % CXX)
elif clang_version < '3.4.2' if is_clang else gcc_version < '4.9.4':
elif clang_version < (3, 4, 2) if is_clang else gcc_version < (4, 9, 4):
warn('C++ compiler too old, need g++ 4.9.4 or clang++ 3.4.2 (CXX=%s)' % CXX)

ok, is_clang, clang_version, gcc_version = try_check_compiler(CC, 'c')
if not ok:
warn('failed to autodetect C compiler version (CC=%s)' % CC)
elif not is_clang and gcc_version < '4.2.0':
elif not is_clang and gcc_version < (4, 2, 0):
# 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.
Expand Down