#!/usr/bin/perl -w
use Getopt::Long;
use Cwd;

# Return name of HIP compiler - either 'nvcc' or 'hcc'
#
use Getopt::Long;
use File::Basename;

Getopt::Long::Configure ( qw{bundling no_ignore_case});
GetOptions(
     "help|h" => \$p_help
    ,"path|p" => \$p_path
    ,"compiler|c" => \$p_compiler
    ,"platform|P" => \$p_platform
    ,"cpp_config|cxx_config|C" => \$p_cpp_config
    ,"newline|n" => \$p_newline
);

if ($p_help) {
    print "usage: which_hip [OPTIONS]\n";
    print "  --path,  -p        : print HIP_PATH (use env var if set, else determine from hipconfig path)\n";
    print "  --cpp_config, -C   : print C++ compiler options\n";
    print "  --compiler, -c     : print compiler (hcc or nvcc)\n";
    print "  --platform, -P     : print platform (hcc or nvcc)\n";
    print "  --newline, -n      : print newline\n";
    print "  --help, -h         : print help message\n";
    exit();
}


$CUDA_PATH=$ENV{'CUDA_PATH'};
$CUDA_PATH='/usr/local/cuda' unless defined $CUDA_PATH;

$HCC_HOME=$ENV{'HCC_HOME'};
$HCC_HOME='/opt/hcc' unless defined $HCC_HOME;

#---
#HIP_PLATFORM controls whether to use NVCC or HCC for compilation:
$HIP_PLATFORM=$ENV{'HIP_PLATFORM'};
if (not defined $HIP_PLATFORM and (-e "$CUDA_PATH/bin/nvcc")) {
    $HIP_PLATFORM="nvcc";
}
$HIP_PLATFORM="hcc" unless defined $HIP_PLATFORM;

$HIP_PATH=$ENV{'HIP_PATH'};
$HIP_PATH=Cwd::realpath (dirname (dirname $0)) unless defined $HIP_PATH;        # use parent directory of this tool



$printed = 0;
if ($p_path) {
    print "$HIP_PATH";
    $printed = 1;
}
    

if ($p_cpp_config) {
    if ($HIP_PLATFORM eq "hcc") {
        print " -D__HIP_PLATFORM_HCC__=   -I$HIP_PATH/include -I$HCC_HOME/include";
    }
    if ($HIP_PLATFORM eq "nvcc") {
        print " -D__HIP_PLATFORM_NVCC__=  -I$HIP_PATH/include -I$CUDA_PATH/include";
    };
    $printed = 1;
}



if (!$printed or $p_compiler or $p_platform) {
    print $HIP_PLATFORM;
}

if ($p_newline) {
    print "\n";
}