libssh2 static linking - undefined reference to <libssh2 functions>

Hello,

I have built libssh2 and its dependencies for aarch64, in such a way to
link these libs as static into the final executable.

So the dependencies compiled as static libraries are

*libassuan.a
libcrypto.a
libgcrypt.a
libgpg-error.a
libksba.a
libnpth.a
libntbtls.a
libssl.a
libz.a*

To test the static linkage I use the following minimal code:

     // libssh2_test.c
     #include <libssh2.h>

     int main(void)
     {
         LIBSSH2_SESSION *session;
         LIBSSH2_CHANNEL *channel;

         libssh2_init(0);
         session = libssh2_session_init();

         libssh2_session_free(session);
         libssh2_exit();
         return 0;
     }

But when I try to compile, ld cannot find libssh2 symbols:

*aarch64-linux-gnu-gcc -I ../third/include/ ../third/lib/libz.a
../third/lib/libnpth.a ../third/lib/libssl.a ../third/lib/libcrypto.a
../third/lib/libgpg-error.a ../third/lib/libksba.a
../third/lib/libgcrypt.a ../third/lib/libntbtls.a
../third/lib/libassuan.a ../third/lib/libssh2.a libssh2_test.c -o
libssh2_test
/opt/Xilinx/Vitis/2019.2/gnu/aarch64/lin/aarch64-linux/bin/../lib/gcc/aarch64-linux-gnu/8.2.0/../../../../aarch64-linux-gnu/bin/ld:
/tmp/ccSuPNUb.o: in function `main':
     libssh2_test.c:(.text+0xc): undefined reference to `libssh2_init'
/opt/Xilinx/Vitis/2019.2/gnu/aarch64/lin/aarch64-linux/bin/../lib/gcc/aarch64-linux-gnu/8.2.0/../../../../aarch64-linux-gnu/bin/ld:
libssh2_test.c:(.text+0x20): undefined reference to
`libssh2_session_init_ex'
/opt/Xilinx/Vitis/2019.2/gnu/aarch64/lin/aarch64-linux/bin/../lib/gcc/aarch64-linux-gnu/8.2.0/../../../../aarch64-linux-gnu/bin/ld:
libssh2_test.c:(.text+0x2c): undefined reference to `libssh2_session_free'
/opt/Xilinx/Vitis/2019.2/gnu/aarch64/lin/aarch64-linux/bin/../lib/gcc/aarch64-linux-gnu/8.2.0/../../../../aarch64-linux-gnu/bin/ld:
libssh2_test.c:(.text+0x30): undefined reference to `libssh2_exit'
     collect2: error: ld returned 1 exit status*

Of course these functions are defined in libssh2.h.
libssh2 has been compiled using the following script:

*#!/bin/sh

host=aarch64
target=aarch64-linux-gnu
cc=${target}-gcc
cpp=${target}-g++
ar=${target}-ar
cross_path=/opt/Xilinx/Vitis/2019.2/gnu/aarch64/lin/aarch64-linux/bin

install_prefix=${PWD}/../../../third/

../configure     --prefix=${install_prefix} \
                  --host=${host}  \
                  CC=${cross_path}/${cc}  \
                  CXX=${cross_path}/${cpp} \
                  --with-gnu-ld  \
                  --with-libgpg-error-prefix=${install_prefix} \
                  --with-crypto=auto \
                  --with-libgcrypt-prefix=${install_prefix} \
                  --with-libssl-prefix=${install_prefix} \
                  --enable-static \
                  --enable-shared

if [ $? -eq 0 ]; then
     make -j 32
     make install
fi*

Could someone suggest what I have done wrong ?
Thanks.
S.

_______________________________________________
libssh2-devel https://cool.haxx.se/cgi-bin/mailman/listinfo/libssh2-devel
Received on 2020-09-24