Getting Guile to work

[Comrade]

I'm trying to get Guile to work, but I'm having some issues.

Here is my Makefile:

guiletest : guiletest.o
gcc -o guiletest guiletest.o
guiletest.o : guiletest.c
gcc "guile-config link" -c guiletest.c

Here is my guiletest.c:

#include <stdio.h>
#include <stdlib.h>
#include <libguile.h>

int main(int argc, char *argv[])
{
SCM func_symbol;
SCM func;

scm_init_guile();

scm_c_primitive_load ("script.scm");

func_symbol = scm_c_lookup("do-hello");
func = scm_variable_ref(func_symbol);

scm_call_0(func);

exit(EXIT_SUCCESS);
}

Yet when I compile, I'm getting these errors:

gcc -o guiletest guiletest.o
guiletest.o(.text+0x11): In function `main':
: undefined reference to `scm_init_guile'
guiletest.o(.text+0x1d): In function `main':
: undefined reference to `scm_c_primitive_load'
guiletest.o(.text+0x29): In function `main':
: undefined reference to `scm_c_lookup'
guiletest.o(.text+0x37): In function `main':
: undefined reference to `scm_variable_ref'
guiletest.o(.text+0x45): In function `main':
: undefined reference to `scm_call_0'
collect2: ld returned 1 exit status
make: *** [guiletest] Error 1

I am confused. I downloaded guile, did ./configure, make, and make install as root. Why isn't this working? I'm following this guile book.

[lakerdonald]

You were using double-quotes (") instead of backticks (`) on the guile-config part of the gcc command line.

[Comrade]

I changed it to backticks, but it still gives me the same errors.

[lakerdonald]

Just for shits and giggles, can you paste what you typed?

[Comrade]

What?

I'll post the Makefile. I think that's what you're asking for.

guiletest : guiletest.o
gcc -o guiletest guiletest.o
guiletest.o : guiletest.c
gcc 'guile-config link' -c guiletest.c

[lakerdonald]

a. Make sure that you've indented lines 2 and 4 with tabs
b. Those still aren't backticks. The backticks are found directly under the escape key.

[Comrade]

The lines have been indented. For some reason it's not shown here.

Here's my new Makefile again:

guiletest : guiletest.o
gcc -o guiletest guiletest.o
guiletest.o : guiletest.c
gcc `guile-config link` -c guiletest.c

The errors are still there.

[kyku]

The lines have been indented. For some reason it's not shown here.

Here's my new Makefile again:

guiletest : guiletest.o
gcc -o guiletest guiletest.o
guiletest.o : guiletest.c
gcc `guile-config link` -c guiletest.c

The errors are still there.

I guess `guile-config link` returns libraries and their paths necessary for linking the program, i.e. making executable from object files. They are useless during compilation, i.e. translating source code to object files. All this boils down to changing your makefile so that it looks like:

guiletest : guiletest.o
        gcc `guile-config link` -o guiletest guiletest.o
guiletest.o : guiletest.c
        gcc  -c guiletest.c

Hope this helps a little. I also strongly suggest using -Wall flag for compilation. Best regards.

[Comrade]

Foolish me!

There was a makefile given with the Guile book that I linked to above.

Here it is :

CDEBUG = -g -Wall
CFLAGS = $(CDEBUG) `guile-config compile`
LDFLAGS = `guile-config link`

SRCS = main.c
OBJS = main.o

hello_world: $(OBJS)
$(CC) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)

Thanks for the help, anyway. I learned more about Makefiles now. Although I'm looking into Jam.

[lakerdonald]

What's Jam?