为ARM交叉编译时错误的标头子目录

Question

I am trying to cross-compile an application (tvheadend) for ARM (raspberry pi 2), using a x64 machine and this toolchain.

I am using the following command line to configure the compilation: ./configure --arch=arm-linux-gnueabihf --cc=arm-linux-gnueabihf-gcc --disable-avahi --release --cflags=-DOPENSSL_USE_DEPRECATED and then I just make .

The problem happens during the compilation of the source file src/utils.c : such file includes string.h , which is correctly selected from the toolchain include directory (let's say ARMTOOLCHAIN/usr/include ), but then string2.h , which is inside ARMTOOLCHAIN/usr/include/arm-linux-gnueabihf/bits , is selected from the system directory, instead of ARMTOOLCHAIN/usr/include/arm-linux-gnueabihf/bits .

In file included from /usr/include/x86_64-linux-gnu/bits/byteswap.h:35:0,
                 from ARMTOOLCHAIN/usr/include/endian.h:61,
                 from /usr/include/x86_64-linux-gnu/bits/string2.h:51,
                 from ARMTOOLCHAIN/usr/include/string.h:637,
                 from src/utils.c:21:
src/utils.c: In function ‘sbuf_put_be16’:
src/utils.c:397:9: error: invalid 'asm': invalid operand for code 'w'
   u16 = htons(u16);
         ^

The problem is that the compiler does not search inside ARMTOOLCHAIN/usr/include/arm-linux-gnueabihf for the bits subdir. I tried to specify -IARMTOOLCHAIN/usr/include/arm-linux-gnueabihf as an option, and to create a symlink to bits inside ARMTOOLCHAIN/usr/include (so to avoid arm-linux-gnueabihf ), but none of these works.

Answer 1

尝试在configure调用中按如下所示修改cflags ：

--cflags="-DOPENSSL_USE_DEPRECATED -nostdinc -nostdinc++"