Building shared libraries with Insure++ under AIX

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Building shared libraries with Insure++

Building shared libraries with Insure++ under AIX:


The Makefile below has been modified to build a shared library with Insure++. The foo.c and Foo.C source files are first compiled into an object (using insure), then linked into a shared object , and finally archived into the shared library. The shared library can then be linked with the main program.

If you build C++ shared libs using /usr/ibmcxx/bin/makeC++SharedLib. Copy the makeC++SharedLib file, give the file you copied a name you are comfortable with, for example, makeC++SharedLib_ins. Now you have two files the makeC++SharedLib_ins file will work exclusively with Insure, and the makeC++SharedLib file will work without Insure. Modify the new makeC++SharedLib_ins file, changing the LD line

From:
LD=ld
To:
LD=ins_ld. .

After modifying the makeC++SharedLib_ins file, you need to change a few lines in your Makefile.

CC = insure
LD= ins_ld
CXX = insure xlC
LXX =/usr/ibmcxx/bin/makeC++SharedLib_ins


Makefile
--------------------------------------------
CC = insure
LD = ins_ld
CXX = insure xlC
LXX=/usr/ibmcxx/bin/makeC++SharedLib_ins
PRIO = -p 5


all : testfoo testFoo


testfoo: testfoo.c libfoo.a
$(CC) -g -o testfoo testfoo.c -L. -lfoo

libfoo.a: foo.c
$(CC) -c -g foo.c
$(LD) -o foo-shr.o -bM:SRE -bE:foo.exp foo.o -lc
$(AR) ruv libfoo.a foo-shr.o

# For C++ Files

testFoo: libFoo.a
$(CXX) -g -o testFoo testfoo.c -L. -lFoo

libFoo.a: Foo.C
$(CXX) -c -g Foo.C
$(LXX) $(PRIO) -o Foo-shr.o -bM:SRE -bE:foo.exp Foo.o -lc
$(AR) ruv libFoo.a Foo-shr.o

--------------------------------------end-------------------------------------------------


foo.exp (Export file)
------------cut------------
#!
foo
----------end------------

foo.c (C example)
------------cut---------------------------------
/* foo.c */

#include <stdio.h>
char *foo(char *s)
{
#ifdef __INSIGHT__
printf("foo(%s) (INSIGHT)\n", s);
#else
printf("foo(%s)\n", s);
#endif
return strdup(s);
}
------------------end--------------------

Foo.C (C++ example)
--------------------cut-------------------------
/* Foo.C */

#include <stdio.h>
#include <string.h>

struct Foo {
Foo(char *p) {
printf("Foo::Foo(%s)\n", p);
}
~Foo() { printf("Foo::~Foo()\n"); }
};

Foo f("hello, there");

extern "C"
char *foo(char *s)
{
#ifdef __INSIGHT__
printf("foo(%s) (INSIGHT)\n", s);
#else
printf("foo(%s)\n", s);
#endif
return strdup(s);
}
-----------------end--------------------

testfoo.c (Main example program)
-------------------cut--------------------
/* testfoo.c */
#include <stdio.h>

extern char *foo(char *);
extern char *bar(char *);

main(int argc, char *argv[])
{
int i;

for (i = 0; i < argc; i++) {
char *s = foo(argv[i]);
if (i > 2)
free(s);
}
return 0;
}
------------------end---------------------