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| -rwxr-xr-x | src/config.guess | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/config.guess b/src/config.guess new file mode 100755 index 0000000..34469b5 --- /dev/null +++ b/src/config.guess @@ -0,0 +1,113 @@ +#!/bin/sh + +# config.guess: an alternate implementation for modern (cross-)systems. +# modern-hosts: native compiler must support the -dumpmachine argument. + +# this file is covered by COPYING.BAUTOMAKE. + +# the order of attempted things: +# +# $NATIVE_CC +# $CC_FOR_BUILD +# c99 +# cc +# ucc +# gcc +# clang +# cparser + + +set -eu + +mb_script="$0" +mb_status=1 +mb_dstamp='2020-01-18' + +mb_target= +mb_extarg="${1:-}" + +export LC_ALL=C + + +config_usage() +{ + printf 'usage:\n' >&2 + printf '\t%s [OPTION]\n' "$mb_script" >&2 + printf '\t%s (cross-)target-alias\n\n' "$mb_script" >&2 + + printf 'Options:\n' >&2 + printf '\t%s\n' \ + '-h, --help' \ + '-t, --time-stamp' \ + '-v, --version' \ + >&2 + + printf '\nThis is an alternate config.guess implementation for modern (cross-)systems.' >&2 + printf '\nThe priority native compiler must support the -dumpmachine argument.\n\n' >&2 + + printf 'Native compilers are tried in the following order:\n' >&2 + printf '\t%s\n' '$NATIVE_CC' '$CC_FOR_BUILD' 'c99' 'cc' 'ucc' 'gcc' 'clang' 'cparser' >&2 + + printf '\npkgsite: https://git.foss21.org/bautomake' >&2 + printf '\npkgbugs: bugs.automake@foss21.org\n\n' >&2 + + exit ${mb_status} +} + + +config_output() +{ + printf '%s\n' "$mb_target" + exit 0 +} + + +for arg ; do + case "$arg" in + -h | --help) + mb_status=0 + config_usage + ;; + + -t | --time-stamp) + printf '%s\n' "$mb_dstamp" + exit 0 + ;; + + -v | --version) + printf 'foss21.org config.guess (%s)\n' "$mb_dstamp" + exit 0 + ;; + + -*) + printf '%s: the argument `%s is not supported.\n\n' "$mb_script" "$arg'" >&2 + exit 2 + esac +done + + +# no unused arguments +if [ -n "$mb_extarg" ]; then + mb_status=2 + config_usage +fi + + +# explicit +mb_native_cc="${NATIVE_CC:-false}" +mb_cc_for_build="${CC_FOR_BUILD:-false}" + + +# try +for mb_cc_guess in "$mb_native_cc" "$mb_cc_for_build" c99 cc ucc gcc clang cparser; do + mb_target=$($mb_cc_guess -dumpmachine 2> /dev/null) || true + + if [ -n "$mb_target" ]; then + config_output + fi +done + + +# fail +printf '%s: native compiler not found, or does not support -dumpmachine.\n\n' "$mb_script" >&2 +exit 2 |