2020-09-01 02:31:11 +00:00
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#!/bin/sh
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2020-06-15 14:18:57 +00:00
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#-*-mode:sh;indent-tabs-mode:nil;tab-width:2;coding:utf-8-*-┐
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#───vi: set net ft=sh ts=2 sts=2 fenc=utf-8 :vi─────────────┘
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#
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# OVERVIEW
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#
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# Compiler Version Discovery
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#
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# DESCRIPTION
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#
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# Cosmopolitan itself may be built using either GCC and Clang, and our
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# build irons out many of the differences between the two. This script
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# is used by build/definitions.mk alongside build/getccname to support
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# the different versions folks use.
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#
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# Our aim is to support GCC 4.2.1+ since that's the last GPLv2 version
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# with any sort of industry consensus. Please note, Cosmopolitan never
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# links GCC runtimes when using later versions, so some concerns might
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# not apply.
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if [ ! -d o/third_party/gcc ]; then
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third_party/gcc/unbundle.sh
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fi
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set -e
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MAJOR_VERSION=$(
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$1 --version |
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head -n1 |
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sed -n '
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s!^[^(]*([^)]*) \([[:digit:]][[:digit:]]*\).*!\1!p
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s!^.*clang.*version \([[:digit:]][[:digit:]]*\).*!\1!p
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')
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if [ -z "$MAJOR_VERSION" ]; then
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echo 6
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else
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printf '%s\n' "$MAJOR_VERSION"
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fi
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