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#!/bin/bash
# based on https://github.com/Homebrew/install/blob/master/install.sh
major_minor() {
echo "${1%%.*}.$(x="${1#*.}"; echo "${x%%.*}")"
}
if [[ -z "${HOMEBREW_ON_LINUX-}" ]]; then
macos_version="$(major_minor "$(/usr/bin/sw_vers -productVersion)")"
fi
version_gt() {
[[ "${1%.*}" -gt "${2%.*}" ]] || [[ "${1%.*}" -eq "${2%.*}" && "${1#*.}" -gt "${2#*.}" ]]
}
should_install_command_line_tools() {
if version_gt "$macos_version" "10.13"; then
! [[ -e "/Library/Developer/CommandLineTools/usr/bin/git" ]]
else
! [[ -e "/usr/lib/crt1.o" ]]
fi
}
if should_install_command_line_tools; then
exit 1
else
exit 0
fi
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