Sample code for building the connection endpoint lookup exit

We can use the sample code snippets for compiling the source on AIX, or Linux, or Windows.

Compiling source

We can compile the source with any LDAP client libraries, for example, IBM Tivoli Directory Server V6.3 Client libraries. This documentation assumes that we are using Tivoli Directory Server V6.3 client libraries. Note: The pre-connect exit library is supported with the following LDAP servers:

• IBM Tivoli Directory Server V6.3
• Novell eDirectory V8.2

The following code snippets describe how to compile the exits:

Compiling the exit on the Windows platform

We can use the following snippet for compiling the exit source:

CC=cl.exe
LL=link.exe
CCARGS=/c /I. /DWIN32 /W3 /DNDEBUG /EHsc /D_CRT_SECURE_NO_DEPRECATE /Zl

# The libraries to include
LDLIBS=Ws2_32.lib Advapi32.lib libibmldapstatic.lib libibmldapdbgstatic.lib \
kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib \
shell32.lib ole32.lib oleaut32.lib uuid.lib odbc32.lib odbccp32.lib msvcrt.lib

OBJS=amqlcel0.obj

all: amqlcelp.dll

amqlcelp.dll: $(OBJS)
        $(LL) /OUT:amqlcelp.dll /INCREMENTAL /NOLOGO /DLL /SUBSYSTEM:WINDOWS /MACHINE: X86 \
              /DEF:amqlcelp.def $(OBJS) $(LDLIBS) /NODEFAULTLIB:msvcrt.lib

# The exit source
amqlcel0.obj: amqlcel0.c
$(CC) $(CCARGS) $*.c

Note: If we are using the IBM Tivoli Directory Server V6.3 Client libraries that are compiled with Microsoft Visual Studio 2003 compiler, you might get warnings while we are compiling the IBM Tivoli Directory Server V6.3 Client libraries with Microsoft Visual Studio 2012, or later, compiler.

Compiling the exit on AIX, or Linux

The following code snippet is for compiling the exit source on Linux. Some compiler options might differ on AIX or Solaris.

#Make file to build exit
CC=gcc

MQML=/opt/mqm/lib
MQMI=/opt/mqm/inc
TDSI=/opt/ibm/ldap/V6.3/include
XFLAG=-m32

TDSL=/opt/ibm/ldap/V6.3/lib

IBM Tivoli Directory Server ships both static and dynamic link libraries, but we can use only one type of library. This script assumes that we are using the static libraries.

#Use static libraries.
LDLIBS=-L$(TDSL) -libibmldapstatic

CFLAGS=-I. -I$(MQMI) -I$(TDSI)

all:amqlcepl

amqlcepl: amqlcel0.c
$(CC) -o cepl amqlcel0.c -shared -fPIC $(XFLAG) $(CFLAGS) $(LDLIBS)

Parent topic: Sample program for Connection Endpoint Lookup (CEPL)