view auto/cc/clang @ 7736:a46fcf101cfc

Core: added format specifiers to output binary data as hex. Now "s", "V", and "v" format specifiers may be prefixed with "x" (lowercase) or "X" (uppercase) to output corresponding data in hexadecimal format. In collaboration with Maxim Dounin.
author Vladimir Homutov <vl@nginx.com>
date Wed, 28 Oct 2020 10:56:11 +0300
parents ceab908790c4
children
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# Copyright (C) Nginx, Inc.


# clang


NGX_CLANG_VER=`$CC -v 2>&1 | grep 'version' 2>&1 \
                           | sed -n -e 's/^.*clang version \(.*\)/\1/p' \
                                    -e 's/^.*LLVM version \(.*\)/\1/p'`

echo " + clang version: $NGX_CLANG_VER"

have=NGX_COMPILER value="\"clang $NGX_CLANG_VER\"" . auto/define


CC_TEST_FLAGS="-pipe"


# optimizations

#NGX_CLANG_OPT="-O2"
#NGX_CLANG_OPT="-Oz"
NGX_CLANG_OPT="-O"

case $CPU in
    pentium)
        # optimize for Pentium
        CPU_OPT="-march=pentium"
        NGX_CPU_CACHE_LINE=32
    ;;

    pentiumpro | pentium3)
        # optimize for Pentium Pro, Pentium II and Pentium III
        CPU_OPT="-march=pentiumpro"
        NGX_CPU_CACHE_LINE=32
    ;;

    pentium4)
        # optimize for Pentium 4
        CPU_OPT="-march=pentium4"
        NGX_CPU_CACHE_LINE=128
    ;;

    athlon)
        # optimize for Athlon
        CPU_OPT="-march=athlon"
        NGX_CPU_CACHE_LINE=64
    ;;

    opteron)
        # optimize for Opteron
        CPU_OPT="-march=opteron"
        NGX_CPU_CACHE_LINE=64
    ;;

esac

CC_AUX_FLAGS="$CC_AUX_FLAGS $CPU_OPT"


CFLAGS="$CFLAGS -pipe $CPU_OPT"

if [ ".$PCRE_OPT" = "." ]; then
    PCRE_OPT="-O2 -pipe $CPU_OPT"
else
    PCRE_OPT="$PCRE_OPT -pipe"
fi

if [ ".$ZLIB_OPT" = "." ]; then
    ZLIB_OPT="-O2 -pipe $CPU_OPT"
else
    ZLIB_OPT="$ZLIB_OPT -pipe"
fi


# warnings

CFLAGS="$CFLAGS $NGX_CLANG_OPT -Wall -Wextra -Wpointer-arith"
CFLAGS="$CFLAGS -Wconditional-uninitialized"
#CFLAGS="$CFLAGS -Wmissing-prototypes"

# we have a lot of unused function arguments
CFLAGS="$CFLAGS -Wno-unused-parameter"

# deprecated system OpenSSL library on OS X
if [ "$NGX_SYSTEM" = "Darwin" ]; then
    CFLAGS="$CFLAGS -Wno-deprecated-declarations"
fi

# stop on warning
CFLAGS="$CFLAGS -Werror"

# debug
CFLAGS="$CFLAGS -g"

if [ ".$CPP" = "." ]; then
    CPP="$CC -E"
fi