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build: fix swift detection on major swift versions

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the swift version string on major versions only has two components,
major and minor, the third one is missing.
This commit is contained in:
Akemi 2018-02-12 16:33:51 +01:00 committed by Kevin Mitchell
parent c82fed85b9
commit 8762818dd2
1 changed files with 2 additions and 2 deletions
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4
waftools/detections/compiler_swift.py
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@ -14,8 +14,8 @@ def __run(cmd):
def __add_swift_flags(ctx):
ctx.env.SWIFT_FLAGS = ('-frontend -c -sdk %s -enable-objc-interop -emit-objc-header'
' -emit-module -parse-as-library') % (ctx.env.MACOS_SDK)
swift_version = __run(ctx.env.SWIFT + ' -version').split(' ')[3].split('.')
major, minor, sub = [int(n) for n in swift_version]
swift_version = __run(ctx.env.SWIFT + ' -version').split(' ')[3].split('.')[:2]
major, minor = [int(n) for n in swift_version]
# the -swift-version parameter is only supported on swift 3.1 and newer
if major >= 3 and minor >= 1 or major >= 4: