GCC搜索目录和默认的C++标准的脚本

女爷i 2022-11-18 13:47 34阅读 0赞

#!/bin/bash
    
    GCC_VERS="$(seq 7 13)"
    
    for v in $GCC_VERS
    do
        GCC="gcc-$v"
        GCC_PATH="$(which $GCC)"
        if [[ -n "$GCC_PATH" ]]; then
            echo "*** Found $GCC: $GCC_PATH ***"
            echo "default C++ standard: "
            gcc -x c++ -E -dM - </dev/null | grep __cplusplus
            echo ""
    
            install_dir="$($GCC --print-search-dirs | grep ^install | awk -F: '{print $2}')"
            echo "install dir:"
            echo "$install_dir"
            echo ""
    
            already_print=""
            programs_dir="$($GCC --print-search-dirs | grep ^programs | awk -F= '{print $2}' | tr ':' '\n')"
            echo "programs search dirs:"
            for d in $programs_dir
            do
                d="$(readlink -m $d)"
                if [[ -e "$d" ]]; then
                    # if already print, then continue
                    echo -e "$already_print" | grep -E -q "^$d\$"
                    (( $? == 0 )) && continue || { 
                        # not print yet
                        echo "$d"
                        already_print="$already_print\n$d"
                    }
                else
                    # not exist
                    # echo "$d (Not Exist)"
                    :
                fi
            done
            echo ""
    
            # include search dirs
            echo "include search dirs:"
            echo | $GCC -E -Wp,-v -
            echo ""
    
            # process libraries search dirs
            already_print=""
            libs_dir="$($GCC --print-search-dirs | grep ^libraries | awk -F= '{print $2}' | tr ':' '\n')"
            echo "libraries search dirs:"
            for d in $libs_dir
            do
                d="$(readlink -m $d)"
                if [[ -e "$d" ]]; then
                    # if already print, then continue
                    echo -e "$already_print" | grep -E -q "^$d\$"
                    (( $? == 0 )) && continue || { 
                        # not print yet
                        echo "$d"
                        already_print="$already_print\n$d"
                    }
                else
                    # not exist
                    # echo "$d (Not Exist)"
                    :
                fi
            done
            echo ""
        else
            echo "$GCC Not Installed"
            echo ""
        fi
    done