Help please, How static built xrdp communicate with libvnc.so?

[huapox]

Help Please

Build: Static built Xrdp with clang, got the static files

xrdp v0.9.16, build env: Alpine 3.15

• ./sbin/xrdp
• ./lib/xrdp/libvnc.a

#build env: Alpine 3.15
export CFLAGS="-Os -fomit-frame-pointer"
export CXXFLAGS="$CFLAGS"
export CPPFLAGS="$CFLAGS"
export LDFLAGS="-Wl,--as-needed --static -static -Wl,--strip-all"
# 
export CC=xx-clang

#with three change
f=sesman/chansrv/Makefile.am
sed -i "s^\$(X_PRE_LIBS) -lXfixes -lXrandr -lX11^\$(X_PRE_LIBS) -lXfixes -lXrandr -lX11    -lX11-xcb -lxcb -lXdmcp -lXau  -lfdk-aac^g" $f

f=sesman/tools/Makefile.am
sed -i "s^\$(X_PRE_LIBS) -lX11^\$(X_PRE_LIBS) -lX11    -lX11-xcb -lxcb -lXdmcp -lXau  -lfdk-aac^g" $f

f=genkeymap/Makefile.am 
sed -i "s^\$(X_PRE_LIBS) -lX11^\$(X_PRE_LIBS) -lX11    -lX11-xcb -lxcb -lXdmcp -lXau  -lfdk-aac^g" $f

Then try trans libvnc.a to libvnc.so

# libvnc.so
cd $TARGETPATH/lib/xrdp
gcc -shared -o libvnc.so libvnc.a 

# statically shared lib  (Alpine build with musl, validate with Ubuntu 20.04)
root@VM-12-9-ubuntu:~# ldd /mnt/libvnc.so
	statically linked

Error: But when run xrdp got error when communicate with libvnc.so.

The error error loading libvnc.so specified in xrdp.ini

# ERR: error loading libvnc.so specified in xrdp.ini

- built: Alpine build with musl, clang, static built
- validate: Ubuntu 20.04

what's more, I've tried with another libvnc.so, which is non-static build in the ubuntu 20.04:

- still error with the static built xrdp in Alpine.
- works with the non-static built xrdp in Ubuntu 20.04

[huapox]

I've find the xrdp's src code https://github.com/neutrinolabs/xrdp/blob/devel/xrdp/xrdp_mm.c#L372

xrdp_mm_sync_load(long param1, long param2)
{
    long rv;
    char *libname;

    libname = (char *)param1;
    rv = g_load_library(libname);
    return rv;
}

/* Let the main thread load the lib,*/
self->mod_handle = g_xrdp_sync(xrdp_mm_sync_load, (tintptr)text, 0);

It's pluggable loaded when a connection establishing (After login with confirm button), Can pluggable libvnc.so works with static built xrdp?

[matt335672]

No it can't. You'll need a shared library for this code to work.