Force linking to static archives during make?

[Jeffrey Walton]

Thanks

On Wed, Dec 18, 2013 at 4:29 AM, Ruslan Ermilov <ru at nginx.com> wrote:
> On Tue, Dec 17, 2013 at 04:16:55PM -0500, Jeffrey Walton wrote:
>> This should be my last build question.
>>
>> $ ./auto/configure --with-http_ssl_module ...
>> --with-cc-opt="-I/usr/local/ssl/include"
>> --with-ld-opt="-L/usr/local/ssl/lib /usr/local/ssl/lib/libssl.a
>> /usr/local/ssl/lib/libcrypto.a -ldl"
>> ...
>> $ make
>> ...
>>
>> Results in the following. Note that OpenSSL is still dynamically linked:
>>
>> $ ldd objs/nginx
>>     linux-vdso.so.1 =>  (0x00007fffd0dfe000)
>>     libdl.so.2 => /lib64/libdl.so.2 (0x0000003ebf600000)
>>     libpthread.so.0 => /lib64/libpthread.so.0 (0x0000003ebfa00000)
>>     libcrypt.so.1 => /lib64/libcrypt.so.1 (0x0000003ed3e00000)
>>     libpcre.so.1 => /lib64/libpcre.so.1 (0x0000003ec0a00000)
>>     libssl.so.1.0.0 => not found
>>     libcrypto.so.1.0.0 => not found
>>     libz.so.1 => /lib64/libz.so.1 (0x0000003ebfe00000)
>>     libc.so.6 => /lib64/libc.so.6 (0x0000003ebf200000)
>>     /lib64/ld-linux-x86-64.so.2 (0x0000003ebea00000)
>>     libfreebl3.so => /lib64/libfreebl3.so (0x0000003ec7a00000)
>>
>> *****
>>
>> Adding -Bstatic does not help even though its clearly on the link command line:
>>
>> $ ./auto/configure --with-http_ssl_module ...
>> --with-cc-opt="-I/usr/local/ssl/include" --with-ld-opt="-Bstatic
>> -L/usr/local/ssl/lib /usr/local/ssl/lib/libssl.a
>> /usr/local/ssl/lib/libcrypto.a -ldl"
>> ...
>> $ make
>> ...
>> objs/src/http/modules/ngx_http_upstream_keepalive_module.o \
>> objs/ngx_modules.o \
>> -Bstatic -L/usr/local/ssl/lib /usr/local/ssl/lib/libssl.a
>> /usr/local/ssl/lib/libcrypto.a -ldl -lpthread -lcrypt -lpcre -lssl
>> -lcrypto -lz
>> ...
>> $ ldd objs/nginx
>>     linux-vdso.so.1 =>  (0x00007fffd4fc6000)
>>     libdl.so.2 => /lib64/libdl.so.2 (0x0000003ebf600000)
>>     ...
>>     libssl.so.1.0.0 => not found
>>     libcrypto.so.1.0.0 => not found
>>
>> *****
>>
>> Omitting -L/usr/local/ssl/lib results in a failed configure.
>>
>> *****
>>
>> How does one force nginx to use static linking for a library?
>>
>> Thanks in advance.
>
> I can't tell for Linux, but on FreeBSD it's as simple as:
>
> $ auto/configure --with-ld-opt=-static
> [...]
> $ make -sj4
> $ file objs/nginx
> objs/nginx: ELF 64-bit LSB executable, x86-64, version 1 (FreeBSD), statically linked, for FreeBSD 9.2 (902503), not stripped
> $ ldd objs/nginx
> ldd: objs/nginx: not a dynamic ELF executable
This is a known problem with the toolchains on Linux and Apple. Hence
the reason we need a way to use the fully specified archive when we
want static linking.

In my case, if I distribute on Ubuntu 12.04 LTS, folks will likely get
Ubuntu's version of OpenSSL since the names are the same and binary
compatible. The Ubuntu folks disable TLSv1.1 and TLSv1.2, and they
refuse to enable them (there's a bug report covering it).

I just don't see how this can be done without enhancing/patching
nginx's configuration subsystem.

Jeff

*****

$ cat t.c
#include <openssl/ssl.h>

int main(int argc, char* argv[])
{
    return (int)SSL_library_init();
}

$ gcc -I/usr/local/ssl/include t.c -L/usr/local/ssl/lib -Bstatic -lssl -lcrypto

$ ldd a.out
    linux-vdso.so.1 =>  (0x00007fff68a2e000)
    libssl.so.1.0.0 => not found
    libcrypto.so.1.0.0 => not found
    libc.so.6 => /lib64/libc.so.6 (0x0000003ebf200000)
    /lib64/ld-linux-x86-64.so.2 (0x0000003ebea00000)

*****

$ gcc -I/usr/local/ssl/include t.c /usr/local/ssl/lib/libssl.a
/usr/local/ssl/lib/libcrypto.a -ldl

$ ldd a.out
    linux-vdso.so.1 =>  (0x00007ffffdffe000)
    libdl.so.2 => /lib64/libdl.so.2 (0x0000003ebf600000)
    libc.so.6 => /lib64/libc.so.6 (0x0000003ebf200000)
    /lib64/ld-linux-x86-64.so.2 (0x0000003ebea00000)