ios - 无法为 iOS 编译 LAME

Question

我正在尝试将 lame mp3 编码器编译为 iOS 的静态库。我想支持所有架构，包括 i686、armv6、armv7、armv7s 和 arm64。这是我的构建脚本:

#!/bin/bash
DEVELOPER=`xcode-select -print-path`
SDK_VERSION="7.1"
mkdir build
function build_lame()
{
    make distclean
    ./configure \
    CFLAGS="-isysroot ${DEVELOPER}/Platforms/${SDK}.platform/Developer/SDKs/${SDK}${SDK_VERSION}.sdk" \
    CC="${DEVELOPER}/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch ${PLATFORM} -miphoneos-version-min=7.0 " \
    --prefix=/Users/mcrute/Desktop/lame \
    --host="arm-apple-darwin9" \
    --disable-shared \
    --enable-static \
    --disable-decoder \
    --disable-frontend

make -j4
cp "libmp3lame/.libs/libmp3lame.a" "build/libmp3lame-${PLATFORM}.a"
}
SDK="iPhoneSimulator"
PLATFORM="i686"
build_lame
SDK="iPhoneOS"
PLATFORM="armv6"
build_lame
PLATFORM="armv7"
build_lame
PLATFORM="armv7s"
build_lame
PLATFORM="arm64"
build_lame
lipo -create build/* -output build/libmp3lame.a

所以错误看起来像这样:

configure: error: in `/Users/ivan/Desktop/lame-3.99.5':
configure: error: C preprocessor "/lib/cpp" fails sanity check
See `config.log' for more details
make: *** No targets specified and no makefile found.  Stop.
cp: libmp3lame/.libs/libmp3lame.a: No such file or directory

Here是我的config.log。 |试图从构建目标中删除 arm64，但脚本也因同样的错误而失败。 Google 说我没有 gcc 但我有.. 正在寻找任何建议!

Answer 1

通过在配置函数中添加 CPP="*"变量解决了这个问题。我的环境中缺少 CPP。编辑后的构建脚本应如下所示:

#!/bin/bash

DEVELOPER=`xcode-select -print-path`

SDK_VERSION="7.1"

mkdir build

function build_lame()
{
    make distclean

    ./configure \
    CPP="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cpp" \
    CFLAGS="-isysroot ${DEVELOPER}/Platforms/${SDK}.platform/Developer/SDKs/${SDK}${SDK_VERSION}.sdk" \
    CC="${DEVELOPER}/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch ${PLATFORM} -miphoneos-version-min=7.0 " \
    --prefix=/Users/ivan/Desktop/lame-3.99.5 \
    --host="arm-apple-darwin9" \
    --disable-shared \
    --enable-static \
    --disable-decoder \
    --disable-frontend

    make -j4
    cp "libmp3lame/.libs/libmp3lame.a" "build/libmp3lame-${PLATFORM}.a"
}

PLATFORM="i686"
SDK="iPhoneSimulator"
build_lame

PLATFORM="armv6"
SDK="iPhoneOS"
build_lame

PLATFORM="armv7"
build_lame

PLATFORM="armv7s"
build_lame

PLATFORM="arm64"
build_lame

lipo -create build/* -output build/libmp3lame.a