我正在尝试运行configure命令，但它会生成以下错误： 我正在运行Mountain Lion OS X 10.8
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for a sed that does not truncate output... /usr/bin/sed
checking build system type... i386-apple-darwin12.0.0
checking host system type... i386-apple-darwin12.0.0
checking target system type... i386-apple-darwin12.0.0
checking whether the C compiler works... no
configure: error: in `/Users/aditya15417/php-5.4.6':
configure: error: C compiler cannot create executables
See `config.log' for more details.
任何想法为什么会出现这个错误？我已经安装了Xcode命令行工具，我正在从终端运行configure命令。
我有XCode 4.4，我很确定已经安装了gcc，因为它给了我：
686-apple-darwin11-llvm-gcc-4.2 (GCC) 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00)
Copyright (C) 2007 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
我尝试过：
sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer
但它不起作用。如果需要，这是指向config.log的链接。似乎从日志中找不到gcc4.2
configure:3524: checking for C compiler version
configure:3533: gcc-4.2 --version >&5
./configure: line 3535: gcc-4.2: command not found
configure:3544: $? = 127
configure:3533: gcc-4.2 -v >&5
./configure: line 3535: gcc-4.2: command not found
configure:3544: $? = 127
configure:3533: gcc-4.2 -V >&5
./configure: line 3535: gcc-4.2: command not found
configure:3544: $? = 127
configure:3533: gcc-4.2 -qversion >&5
./configure: line 3535: gcc-4.2: command not found
configure:3544: $? = 127
configure:3564: checking whether the C compiler works
configure:3586: gcc-4.2 conftest.c >&5
./configure: line 3588: gcc-4.2: command not found
configure:3590: $? = 127
configure:3628: result: no
这怎么可能？
答案 0 :(得分：2)
我刚刚编辑了.bash_profile，并注释掉了CC =行，因为我似乎认为它已经从之前的MacPorts安装中遗留下来了。
答案 1 :(得分：0)
从config.log文件中，它尝试使用不存在的编译器gcc-4.2。您需要告诉它使用确实存在的编译器，这通常通过设置环境变量CC
答案 2 :(得分：0)
我有一行：在我的.profile文件中导出CFLAGS =“ - arch ppc -arch x86_64 -g -O2 -m64”。删除-arch ppc后，我可以成功运行./configure。