static compilation with sonames without specifying it

[genner]

Hi all,

I am experiencing a strange behavior. I am compiling a library without passing any static / staticlib option, but apparently it gets statically compiled somehow.

It correctly generates a .so file (I'm on Linux), but when I check it with ldd I see: "statically linked
" as output.

I printed what is written in CONFIG and everything seems correct:

lex yacc debug exceptions depend_includepath testcase_targets import_plugins import_qpa_plugin file_copies qmake_use qt warn_on release link_prl incremental shared plugin_manifest linux unix posix gcc qtc_run debug qml_debug qtc_run c++11 console

If I add other similar libraries and try to link them, I cannot be able to create dynamic libraries in any way.

This is the code:

QT -= gui

TEMPLATE = lib
DEFINES += MY_FIRST_LIBRARY

CONFIG += c++11

DESTDIR = ../lib
MOC_DIR = ../build
OBJECTS_DIR = ../build
TARGET = my_first


DEFINES += QT_DEPRECATED_WARNINGS

SOURCES += \
    first_class.cpp

HEADERS += \
    first_class.h \
    my_first_global.h \

# Default rules for deployment.
unix {
    target.path = /usr/lib
}
!isEmpty(target.path): INSTALLS += target

What's going on in your opinion? any hint on how to debug it ?

Cheers

[EDIT 1]
Some more info: the generated Makefile has following flags:

CFLAGS        = -pipe -O2 -Wall -Wextra -D_REENTRANT -fPIC $(DEFINES)
CXXFLAGS      = -pipe -O2 -std=gnu++1z -Wall -Wextra -D_REENTRANT -fPIC $(DEFINES)
LINK          = g++
LFLAGS        = -Wl,-O1 -Wl,-rpath,/home/genner/Qt/6.3.0/gcc_64/lib -Wl,-rpath-link,/home/genner/Qt/6.3.0/gcc_64/lib -shared -Wl,-soname,libmy_first.so.1
LIBS          = $(SUBLIBS) /home/genner/Qt/6.3.0/gcc_64/lib/libQt6Gui.so /home/genner/Qt/6.3.0/gcc_64/lib/libQt6Core.so -lpthread -lGL   

EDIT 2:
The file command tells me this:

libmy_first.so.1.0.0: ELF 64-bit LSB shared object, x86-64, version 1 (SYSV), dynamically linked, BuildID[sha1]=20250f39bd468b237bfcaac47960d8381f1e5ebe, with debug_info, not stripped

Again, ldd tells me instead:

statically linked

[jsulm]

@genner What is the target device/OS you're building for? What Qt do you use (is it statically linked?)?

[genner]

@jsulm target is Linux as well, and I have just installed the last Qt 6.3.0 version without doing anything particular.

[genner]

Ok, apparently the library did not contain much code. Adding more code it now correctly shows that it is a dynamic library also with ldd.