Re: Using autoconf for a shared library

[Basin Ilya]

See attached tarball. Unpack,
./autoreconf -fi
./configure
make
make check
make install DESTDIR=`pwd`/../library-dst


>From your makefile:

"so = libpublic.so"
        "lib_LTLIBRARIES = libpublic.la"

"ldflags = -shared -Wl,-soname,$(so)"
        automatic (soname will be "*.so.0")

"solinkname = -lpublic"
        "LDADD = src/libpublic.la"

"install_target = /usr/local"
"install:"
"uninstall:"
        automatic


"srcs = $(wildcard src/*.c)"
        "libpublic_la_SOURCES = private.c public.c ..."

"objs = $(patsubst %.c,%.o,$(srcs))"
        automatic

"includes = include/public.h"
        "AM_CPPFLAGS = -I${top_srcdir}/include"


"installed_includes = $(addprefix $(install_target)/,$(includes))"
        "include_HEADERS = ../include/public.h"

"cc = gcc"
        automatic



"-c , -fPIC"
        automatic
        

"-g -O3  -Wall -Wextra -Wfatal-errors -pedantic-errors"
        optionally provide as configure arg: CFLAGS="..."


"privateincludedirs = -Isrc"
        not needed, because "src" is current dir during compilation

"publicincludedirs = -Iinclude"
        "AM_CPPFLAGS = -I${top_srcdir}/include"



"LD_LIBRARY_PATH="
        not needed. Test binaries are built with RPATH


"test:"
        "TESTS = test"
        "check_PROGRAMS = test"
        ...

        "test" stdout goes to "test.log"



15.08.2016 19:29, Thomas Nyberg пишет:
> Hello,
> 
> I've been reading the manuals for autoconf/automake and have been unable
> to get a setup working correctly with autoconf. I've written up a toy
> shared library and right now the Makefile has a rule to install the
> library directly to `/usr/local`. All I really want from autoconf is to
> be able to have `--prefix` user-configurable. I figured it was better to
> use autoconf/automake than reinvent the wheel, but I'm totally unable to
> get it working.
> 
> Does anyone here know a source for a very simple example of what is
> needed (configure.ac/Makefile.in) to get this type of setup working?
> I've been reading both manuals, but I can't figure it out. Maybe someone
> here can even immediately see how to do this.
> 
> I'm attaching an extremely simplified version of a shared library setup.
> I'm also pasting the text of the files in below in case you just want to
> read directly (instead of extracting something from a random person on
> the internet). Basically if you run `make` it compiles a shared library
> for you with publicly exports one function called `public_func`. If you
> run `make test` it will test it by setting the current directory to
> LD_LIBRARY_PATH. You can install it by running `make install` and then
> ldconfig (though I doubt you want to...). This is the repo structure:
> 
> .
> ├── include
> │   └── public.h
> ├── Makefile
> ├── src
> │   ├── private.c
> │   ├── private.h
> │   └── public.c
> └── test.c
> 
> Here are the files:
> 
> include/public.h
> -----------------------------------
> int public_func(void);
> -----------------------------------
> 
> src/public.h
> -----------------------------------
> #include <private.h>
> 
> 
> int public_func(void) {
>     return private_func();
> }
> -----------------------------------
> 
> src/private.h
> -----------------------------------
> int private_func(void);
> -----------------------------------
> 
> src/private.c
> -----------------------------------
> #include <private.h>
> 
> 
> int private_func(void) {
>     return 1;
> }
> -----------------------------------
> 
> test.c
> -----------------------------------
> #include <public.h>
> #include <stdio.h>
> 
> 
> int main(void) {
>     printf("public value: %d\n", public_func());
>     return 0;
> }
> -----------------------------------
> 
> Makefile
> -----------------------------------
> so = libpublic.so
> solinkname = -lpublic
> 
> install_target = /usr/local
> 
> srcs = $(wildcard src/*.c)
> objs = $(patsubst %.c,%.o,$(srcs))
> 
> includes = include/public.h
> installed_includes = $(addprefix $(install_target)/,$(includes))
> 
> cc = gcc
> cflags = -c -g -fPIC -Wall -Wextra -Wfatal-errors -pedantic-errors
> privateincludedirs = -Isrc
> publicincludedirs = -Iinclude
> ldflags = -shared -Wl,-soname,$(so)
> 
> 
> all: $(so)
> 
> $(so): $(objs)
>         $(cc) $(ldflags) $(objs) -o $(so)
> 
> %.o:%.c
>         $(cc) $(cflags) $(privateincludedirs) -c -o $@ $<
> 
> clean:
>         rm -f *.o src/*.o *.so test
> 
> install:
>         cp -v $(includes) $(install_target)/include
>         cp -v $(so) $(install_target)/lib
> -----------------------------------
> 
> Thanks for any help!
> 
> Cheers,
> Thomas
> 
> 
> _______________________________________________
> Autoconf mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/autoconf
>

library.tar.bz2
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