ccache mips-linux-uclibc-gcc -O2 -Wall -I../.. -I../../include -I../../platform/linux  -c cnfchk.c -o ../../objs/cnfchk.o -Dlinux
ccache mips-linux-uclibc-gcc -O2 -Wall -I../.. -I../../include -I../../platform/linux  -c buffer.c -o ../../objs/buffer.o -Dlinux
ccache mips-linux-uclibc-gcc -O2 -Wall -I../.. -I../../include -I../../platform/linux  -c bufaux.c -o ../../objs/bufaux.o -Dlinux
bufaux.c:57:24: error: openssl/bn.h: No such file or directory
In file included from bufaux.c:61:
../../include/bufaux.h:38: error: expected declaration specifiers or '...' before 'BIGNUM'
../../include/bufaux.h:39: error: expected declaration specifiers or '...' before 'BIGNUM'
bufaux.c:86: error: expected declaration specifiers or '...' before 'BIGNUM'
bufaux.c: In function 'buffer_put_bignum':
bufaux.c:88: warning: implicit declaration of function 'BN_num_bits'
bufaux.c:88: error: 'value' undeclared (first use in this function)
bufaux.c:88: error: (Each undeclared identifier is reported only once
bufaux.c:88: error: for each function it appears in.)
bufaux.c:99: warning: implicit declaration of function 'BN_bn2bin'
bufaux.c: At top level:
bufaux.c:120: error: expected declaration specifiers or '...' before 'BIGNUM'
bufaux.c: In function 'buffer_get_bignum':
bufaux.c:138: warning: implicit declaration of function 'BN_bin2bn'
bufaux.c:138: error: 'value' undeclared (first use in this function)
make[4]: *** [../../objs/bufaux.o] Error 1
make[4]: Leaving directory `/home/ubuntu/openwrt/atheros/build_mips/gw6c-5.0/tspc-advanced/src/lib'
make[3]: *** [all] Error 1
make[3]: Leaving directory `/home/ubuntu/openwrt/atheros/build_mips/gw6c-5.0/tspc-advanced'
make[2]: *** [/home/ubuntu/openwrt/atheros/build_mips/gw6c-5.0/.built] Error 2
make[2]: Leaving directory `/home/ubuntu/openwrt/atheros/feeds/packages/ipv6/gw6c'
  *** gw6c compile failed 
make[1]: *** [gw6c-compile] Error 1
make[1]: Leaving directory `/home/ubuntu/openwrt/atheros/package'
Build failed. Please re-run make with V=99 to see what's going on
make: *** [package/gw6c-compile] Fehler 1
ubuntu@ubuntu-laptop:~/openwrt/atheros$ find staging_dir_mips/ -name bn.h
staging_dir_mips/usr/include/openssl/bn.h