Unresolved symbols when compiling with gcc on OpenSolaris 2008.11

Question

When compiling a simple Netbeans C project that uses sockets I get the following output. I supose the problem is that gcc is not properly linking sockets.h library. Need a foolprof method to solve this. Thanks i advance

Running "/usr/bin/make  -f Makefile CONF=Debug clean" in /export/home/manu/Escritorio/TP-entrega 2/Application_1

/usr/bin/make -f nbproject/Makefile-Debug.mk SUBPROJECTS= .clean-conf
rm -f -r build/Debug
rm -f dist/Debug/GNU-Solaris-x86/application_1

Clean successful. Exit value 0.

Running "/usr/bin/make  -f Makefile CONF=Debug" in /export/home/manu/Escritorio/TP-entrega 2/Application_1

/usr/bin/make -f nbproject/Makefile-Debug.mk SUBPROJECTS= .build-conf
/usr/bin/make  -f nbproject/Makefile-Debug.mk dist/Debug/GNU-Solaris-x86/application_1
mkdir -p build/Debug/GNU-Solaris-x86
rm -f build/Debug/GNU-Solaris-x86/tp2.o.d
gcc   -c -g -MMD -MP -MF build/Debug/GNU-Solaris-x86/tp2.o.d -o build/Debug/GNU-Solaris-x86/tp2.o tp2.c
mkdir -p dist/Debug/GNU-Solaris-x86
gcc    -o dist/Debug/GNU-Solaris-x86/application_1 build/Debug/GNU-Solaris-x86/tp2.o 

Undefined                        first referenced
 symbol                              in file

bind                                build/Debug/GNU-Solaris-x86/tp2.o

recv                                build/Debug/GNU-Solaris-x86/tp2.o

send                                build/Debug/GNU-Solaris-x86/tp2.o

accept                              build/Debug/GNU-Solaris-x86/tp2.o

listen                              build/Debug/GNU-Solaris-x86/tp2.o

socket                              build/Debug/GNU-Solaris-x86/tp2.o

ld: fatal: Symbol referencing errors. No output written to dist/Debug/GNU-Solaris-x86/application_1
collect2: ld returned 1 exit status
*** Error code 1
make: Fatal error: Command failed for target `dist/Debug/GNU-Solaris-x86/application_1'
Current working directory /export/home/manu/Escritorio/TP-entrega 2/Application_1
*** Error code 1
make: Fatal error: Command failed for target `.build-conf'
Current working directory /export/home/manu/Escritorio/TP-entrega 2/Application_1
*** Error code 1
make: Fatal error: Command failed for target `.build-impl'

Build failed. Exit value 1.

Answer 1

You need the appropriate -l flag. I'm looking it up.

Duh. add -lsocket. Actually, you probably need -lnsl too. See this man page.

In Netbeans this should be in the Project Properties.

Answer 2

You need to make sure that the linker is linking the socket and nsl libraries. At the command line you would add -lsocket -lnsl to do so. I don't know netbeans and can't tell you how it works there exactly, but somewhere there should be linker settings where you can add these libraries.