Cannot link shared library on qt creator (linux)

Question

Here is my .pro file:

TEMPLATE = app
CONFIG += console
CONFIG -= app_bundle
CONFIG -= qt

DEPENDPATH += /home/khajak/CList/linker
INCLUDEPATH += /home/khajak/CList/linker

LIBS += -L/home/khajak/CList/linker -llibCListManager
LIBS += -L/home/khajak/CList/linker -llibCommandLineEngine

Here is the /home/khajak/CList/linker directory:

lrwxrwxrwx 1 khajak khajak     24 Mar 30 23:10 libCListManager.so -> libCListManager.so.1.0.0
lrwxrwxrwx 1 khajak khajak     24 Mar 30 23:10 libCListManager.so.1 -> libCListManager.so.1.0.0
lrwxrwxrwx 1 khajak khajak     24 Mar 30 23:10 libCListManager.so.1.0 -> libCListManager.so.1.0.0
-rwxrwxr-x 1 khajak khajak 344109 Mar 30 22:37 libCListManager.so.1.0.0
lrwxrwxrwx 1 khajak khajak     29 Mar 30 23:10 libCommandLineEngine.so -> libCommandLineEngine.so.1.0.0
lrwxrwxrwx 1 khajak khajak     29 Mar 30 23:10 libCommandLineEngine.so.1 -> libCommandLineEngine.so.1.0.0
lrwxrwxrwx 1 khajak khajak     29 Mar 30 23:10 libCommandLineEngine.so.1.0 -> libCommandLineEngine.so.1.0.0
-rwxrwxr-x 1 khajak khajak 207537 Mar 30 18:24 libCommandLineEngine.so.1.0.0
-rw-rw-r-- 1 khajak khajak    285 Mar 30 23:15 linker.pro

Qtcreator throws an error:

:-1: error: cannot find -llibCListManager
:-1: error: cannot find -llibCommandLineEngine

Answer 1

Quoting man ld

  -l namespec
  --library=namespec<br>

Add the archive or object file specified by namespec to the list of files to link. This option may be used any number of times. If namespec is of the form :filename, ld will search the library path for a file called filename, otherwise it will search the library path for a file called libnamespec.a.

On systems which support shared libraries, ld may also search for files other than libnamespec.a. Specifically, on ELF and SunOS systems, ld will search a directory for a library called libnamespec.so before searching for one called libnamespec.a. (By convention, a ".so" extension indicates a shared library.) Note that this behavior does not apply to :filename, which always specifies a file called filename.

Thus, -llibCListManager means you want to link with a library named liblibCListManager.so. For libCListManager.so the correct option is -lCListManager.