Building shared libraries with Insure++ under AIX

The following Makefile shows how to build a shared library with Insure++ from the files foo.c (a C example) or Foo.C (a C++ example). The source file is first compiled into an object (using insure), then linked into a shared object (using ins_ld), and finally archived into the shared library (using ar). The shared library can then be linked with the main program.

If you build C++ shared libs using /usr/ibmcxx/bin/makeC++SharedLib, it must be modified. The line

    LD=ld

must be changed to

    LD=${LD:-ld}

to allow the replacement of ld with ins_ld when building a library with Insure++.

Here is the Makefile, followed by the source files for these examples.

	PRIO = -p 5

	#CC=cc
	#LD=${LD:-ld}
	#CXX=xlC
	#LXX=./makeC++SharedLib_r

	CC = insure xlc_r
	LD = ins_ld
	CXX = insure xlC_r
	LXX = LD=ins_ld ./makeC++SharedLib_r

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

	Foo.o: foo.C
        	$(CXX) -c -g foo.C -o $@

foo.exp (Export file)

    #!
    foo

foo.c (C example)

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

Foo.C (C++ example)

    #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 __INSURE__
	    printf("foo(%s) (INSURE)\n", s);
    #else
	    printf("foo(%s)\n", s);
    #endif
        return strdup(s);
    }

testfoo.c (Main example program)

    #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;
    }

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