Does not find header files or libraries under /usr/local

Does not find header files or libraries under /usr/local

[Matt Kraai]

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Howdy,

When I tried to compile Guile on a QNX 6.3.0 system, it did not find
the libtool and gmp libraries or the gmp header files that I'd built
and installed under /usr/local until I set the CPPFLAGS environment
variable to -I/usr/local/include and the LDFLAGS environment variable
to -L/usr/local/lib.

-- 
Matt

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Re: Does not find header files or libraries under /usr/local

[Marius Vollmer]

Matt Kraai <kraai@ftbfs.org> writes:

> When I tried to compile Guile on a QNX 6.3.0 system, it did not find
> the libtool and gmp libraries or the gmp header files that I'd built
> and installed under /usr/local until I set the CPPFLAGS environment
> variable to -I/usr/local/include and the LDFLAGS environment variable
> to -L/usr/local/lib.

That is expected.  See this part of the README:

    Guile expects to be able to find these packages in the default
    compiler setup, it does not try to make any special arrangements
    itself.  For example, for the `readline' package, Guile expects to
    be able to find the include file <readline/readline.h>, without
    passing any special `-I' options to the compiler.


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Re: Does not find header files or libraries under /usr/local

[Matt Kraai]

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On Sun, May 28, 2006 at 02:02:13AM +0300, Marius Vollmer wrote:
> Matt Kraai <kraai@ftbfs.org> writes:
> 
> > When I tried to compile Guile on a QNX 6.3.0 system, it did not find
> > the libtool and gmp libraries or the gmp header files that I'd built
> > and installed under /usr/local until I set the CPPFLAGS environment
> > variable to -I/usr/local/include and the LDFLAGS environment variable
> > to -L/usr/local/lib.
> 
> That is expected.  See this part of the README:
> 
>     Guile expects to be able to find these packages in the default
>     compiler setup, it does not try to make any special arrangements
>     itself.  For example, for the `readline' package, Guile expects to
>     be able to find the include file <readline/readline.h>, without
>     passing any special `-I' options to the compiler.

So the correct solution is to ensure that the compiler looks in
/usr/local?  Do you know why other programs don't require this?

-- 
Matt

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Re: Does not find header files or libraries under /usr/local

[Marius Vollmer]

Matt Kraai <kraai@ftbfs.org> writes:

> So the correct solution is to ensure that the compiler looks in
> /usr/local?

Yes.

>  Do you know why other programs don't require this?

Maybe... :-)  What programs are you talking about?

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Re: Does not find header files or libraries under /usr/local

[Matt Kraai]

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On Sun, May 28, 2006 at 02:29:24AM +0300, Marius Vollmer wrote:
> Matt Kraai <kraai@ftbfs.org> writes:
> 
> > So the correct solution is to ensure that the compiler looks in
> > /usr/local?
> 
> Yes.
> 
> >  Do you know why other programs don't require this?
> 
> Maybe... :-)  What programs are you talking about?

I don't have access to that box at the moment, so I can't give a
complete list, but from memory, openssh requires openssl and was able
to find it even though it was in /usr/local.

Thanks for following this up, BTW.

-- 
Matt

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Re: Does not find header files or libraries under /usr/local

[Ludovic Courtès]

Hi,

Matt Kraai <kraai@ftbfs.org> writes:

> I don't have access to that box at the moment, so I can't give a
> complete list, but from memory, openssh requires openssl and was able
> to find it even though it was in /usr/local.

Often, `configure' scripts provide a `--with-PACKAGE-prefix' option (or
`--with-PACKAGE-includes', or `--with-PACKAGE-libs') so that one can
specify where to look fo a particular package.  For instance,
`libgcrypt.m4' contains the following snippet:

  AC_ARG_WITH(libgcrypt-prefix,
            AC_HELP_STRING([--with-libgcrypt-prefix=PFX],
                           [prefix where LIBGCRYPT is installed (optional)]),
     libgcrypt_config_prefix="$withval", libgcrypt_config_prefix="")
  if test x$libgcrypt_config_prefix != x ; then
     if test x${LIBGCRYPT_CONFIG+set} != xset ; then
        LIBGCRYPT_CONFIG=$libgcrypt_config_prefix/bin/libgcrypt-config
     fi
  fi

Consequently, users of the documented libgcrypt M4 macros automatically
get this new `--with' option.

Guile's `configure' already has a number of `--with' options that come
from various `.m4' files depended on.  Perhaps we could add one option
for GMP, or, better, ask the GMP maintainers to provide a set of M4
macros that does this?  :-)

Thanks,
Ludovic.


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Re: Does not find header files or libraries under /usr/local

[Kevin Ryde]

ludovic.courtes@laas.fr (Ludovic Courtès) writes:
>
> Often, `configure' scripts provide a `--with-PACKAGE-prefix' option (or
> `--with-PACKAGE-includes', or `--with-PACKAGE-libs') so that one can
> specify where to look fo a particular package.

Though that's contrary to the gnu standards.  Getting a path from
somewhere is fine, even good, but --with is not the place for it.

   http://www.gnu.org/prep/standards/html_node/Configuration.html

   Do not use a --with option to specify the file name to use to find
   certain files.  That is outside the scope of what --with options
   are for.


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Re: Does not find header files or libraries under /usr/local

[Ludovic Courtès]

Hi,

Kevin Ryde <user42@zip.com.au> writes:

> ludovic.courtes@laas.fr (Ludovic Courtès) writes:
>>
>> Often, `configure' scripts provide a `--with-PACKAGE-prefix' option (or
>> `--with-PACKAGE-includes', or `--with-PACKAGE-libs') so that one can
>> specify where to look fo a particular package.
>
> Though that's contrary to the gnu standards.  Getting a path from
> somewhere is fine, even good, but --with is not the place for it.

Interesting, I'd have thought this was the "Right Way".  ;-) From a user
viewpoint, I find it very convenient, and sometimes even indispensable
(e.g., when one has several versions of a tool available and wants to
build against a specific version).

Thanks,
Ludovic.


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