#!/bin/sh
## Input:
## - darwin_target (defaults to 20, currently only 17, 20, 23 are defined)
## Output:
## - ARCH (e.g. x86_64)
## - osver (e.g., 18.7.0)
## - oscode (e.g., high-sierra) - locked to supported builds!
## - TNAME: $oscode-$ARCH
## - host_oscode - actual oscode of the machine
## - configarch (e.g., powerpc isntead of ppc)
## - texarch (e.g., i686 instead of i386)
## - MACOSX_DEPLOYMENT_TARGET, SDKROOT, sdkver

ARCH=`uname -m`
osver=`uname -r`

## This would be real name, but we only build the above!
if [ -z "${oscode}" ]; then
    oscode="darwin"
    case $osver in
	5.*) oscode="puma" ;;
	6.*) oscode="jaguar" ;;
	7.*) oscode="panther" ;;
	8.*) oscode="tiger" ;;
	9.*) oscode="leopard" ;;
	10.*) oscode="snowleopard" ;;
	11.*) oscode="lion" ;;
	12.*) oscode="mountainlion" ;;
        13.*) oscode="mavericks" ;;
        14.*) oscode="yosemite" ;;
        15.*) oscode="el-capitan" ;;
        16.*) oscode="sierra" ;;
	17.*) oscode="high-sierra" ;;
	18.*) oscode="mojave" ;;
	19.*) oscode="catalina" ;;
	20.*) oscode="big-sur" ;;
	21.*) oscode="monterey" ;;
	22.*) oscode="ventura" ;;
	23.*) oscode="sonoma" ;;
	24.*) oscode="sequoia" ;;
	25.*) oscode="tahoe" ;;
    esac
fi

## real name of the host system
host_oscode=$oscode

if [ -z "${darwin_target}" ]; then
    if echo $osver | grep ^2 >/dev/null; then
	darwin_target=20
    else
	echo "ERROR: We default to darwin20, but the current os is $oscode, please set darwin_target"
	exit 1
    fi
fi

## we override oscode to one of the supported builds
## if the target is set then use the target instead of host
case ${darwin_target} in
    17*) oscode="high-sierra"; sdkver=10.13; target_ver=10.13 ;;
    20*) oscode="big-sur"; sdkver=11.3; target_ver=11.0 ;;
    23*) oscode="sonoma"; sdkver=14.4; target_ver=13 ;;  ## we are a bit more lenient on the binary version
    *) echo "ERROR: darwin_target=${darwin_target} has no definition, aborting" >&2; exit 1 ;;
esac
sdkmver=$(echo $sdkver | sed 's:[.].*::')

export SDKROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX${sdkmver}.sdk
export MACOSX_DEPLOYMENT_TARGET=${target_ver}
export OS_VER=${darwin_target}
export sdkver
export target_ver
export darwin_target

if [ "$ARCH" = i386 ]; then
    ## 10.5+ can run both but arch always returns 32-bit - check if we can use 64-bit instead
    x64=`arch -arch x86_64 sh -c 'echo x86_64'`
    if [ "z$x64" = zx86_64 ]; then
	ARCH=x86_64
    fi
fi

configarch="$ARCH"
texarch="$ARCH"
case "$ARCH" in
    ppc*)
	configarch=powerpc
	texarch=powerpc
	;;
    i?86)
	configarch=i686
	texarch=i386
	;;
    arm64)
	configarch=aarch64
	;;
esac

: ${TNAME="$oscode-$ARCH"}