RE: I want to build a library rather than an executable

["Lev Assinovsky" <LAssinovsky at algorithm dot aelita dot com>]

First of all get rid of:
-L/usr/local/lib -lstdc++\
 -L/usr/local/lib/gcc/sparc-sun-solaris2.9/3.4.1 -lgcc
from LDFLAGS. They'll be added automatically.
Secondary, you really build an executable.
If you want shared library add -shared to the command line for all:

Hope this help.
-----Original Message-----
From: gcc-help-owner@gcc.gnu.org [mailto:gcc-help-owner@gcc.gnu.org]On Behalf Of Jan Croker
Sent: Wednesday, October 20, 2004 2:10 PM
To: gcc-help@gcc.gnu.org
Subject: I want to build a library rather than an executable


Anyone,

I am currently porting an existing application from Solaris 2.6 to Solaris
2.9 and switching to the GNU compiler 3.4.1 as well!! (previously used the
Sun compiler)

As a first stab, I am just trying to build a library that is used by the
other applications.

I can compile OK but I keep hitting a link problem that reports:

Building the Common library
Undefined                       first referenced
 symbol                             in file
main
/usr/local/lib/gcc/sparc-sun-solaris2.9/3.4.1/crt1.o
ld: fatal: Symbol referencing errors. No output written to libcommon.a
collect2: ld returned 1 exit status
*** Error code 1
make: Fatal error: Command failed for target `all'

Is there any way that I can force the linker to ignore looking for 'main' as
this is not a requirement when building a library.

The relevant lines in the makefile are:

OBJECTS = $(SRCS:.cpp=.o)

LDFLAGS = -L. \
  -L/usr/local/lib -lstdc++\
 -L/usr/local/lib/gcc/sparc-sun-solaris2.9/3.4.1 -lgcc\
  -lnsl -lsocket -lthread -lposix4

.SUFFIXES : .cpp


.cpp.o :
        @echo "Compiling '$<'"
        @$(CPLUSPLUS) -c $(CCFLAGS) $(DEBUG) $(INCLUDE) $<


all :   $(OBJECTS); @echo "Building the Common library"
        @$(CPLUSPLUS) -o $(LIB) $(LDFLAGS)  $(DEBUG) $(OBJECTS)

where CPLUSPLUS = g++


If anyone can help, I would appreciate it because I am banging my head on
the wall at the moment!!!

Jan

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