【已解决】cygwin下用arm-xscale-linux-gnueabi交叉编译libcgi出错：src/string.c:587:2: error: incompatible type for argument 2 of ‘__builtin_va_copy’

【问题】

折腾：

【记录】cygwin下用arm-xscale-linux-gnueabi交叉编译libcgi

期间，编译出错了：

CLi@PC-CLI-1 ~/develop/libcgi/libcgi-1.0
$ make CC=arm-xscale-linux-gnueabi-gcc
arm-xscale-linux-gnueabi-gcc    -c -o src/error.o src/error.c
arm-xscale-linux-gnueabi-gcc    -c -o src/cgi.o src/cgi.c
arm-xscale-linux-gnueabi-gcc    -c -o src/session.o src/session.c
arm-xscale-linux-gnueabi-gcc    -c -o src/base64.o src/base64.c
arm-xscale-linux-gnueabi-gcc    -c -o src/md5.o src/md5.c
arm-xscale-linux-gnueabi-gcc    -c -o src/string.o src/string.c
src/string.c: In function 'make_string':
src/string.c:587:2: error: incompatible type for argument 2 of '__builtin_va_copy'
src/string.c:587:2: note: expected '__va_list' but argument is of type 'char *'
<builtin>: recipe for target `src/string.o' failed
make: *** [src/string.o] Error 1

即：

【解决过程】

1.参考：

arm-linux-gcc 编译 libcgi

[Libcgi-general] src/string.c:587: incompatible type for argument 2 of `__builtin_va_copy’

去把：

libcgi-1.0\src\string.c

中的587行的：

	va_copy(bkp, str);

改为：

	//va_copy(bkp, str);
    va_copy(bkp, ptr);

再继续编译，就可以了：

CLi@PC-CLI-1 ~/develop/libcgi/libcgi-1.0
$ make CC=arm-xscale-linux-gnueabi-gcc
arm-xscale-linux-gnueabi-gcc    -c -o src/string.o src/string.c
arm-xscale-linux-gnueabi-gcc    -c -o src/general.o src/general.c
arm-xscale-linux-gnueabi-gcc    -c -o src/list.o src/list.c
arm-xscale-linux-gnueabi-gcc    -c -o src/cookie.o src/cookie.c
ar rc src/libcgi.a src/error.o src/cgi.o src/session.o src/base64.o src/md5.o  src/string.o src/general.o src/list.o src/cookie.o
arm-xscale-linux-gnueabi-gcc -shared -o src/libcgi.so src/error.o src/cgi.o src/session.o src/base64.o src/md5.o  src/string.o src/general.o src/list.o src/cookie.o



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【总结】

arm-xscale-linux-gnueabi交叉编译libcgi出错

的解决办法：

去把：

libcgi-1.0\src\string.c

中的587行的：

va_copy(bkp, str);

改为：

//va_copy(bkp, str);
va_copy(bkp, ptr);

即可。

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