[asterisk-dev] Add module dependecy in build system

[Catalin Stanciu]

Thank you for your support, the help make me succeed, having now the
package working in ubuntu.
Now I am testing the module in Centos 6. First I found that PKG_CONFIG_PATH
is empty, so the AST_PKG_CONFIG_CHECK was not able to find the lib and
include routes. I solved it exporting the pkgconfig routes:

export
PKG_CONFIG_PATH=/usr/lib64/pkgconfig:/usr/src/mongo-c-driver-1.3.3/src/:/usr/local/lib/pkgconfig/

Everything seems to be correct since i found this problem when executing
./configure:

checking for pg_config... /usr/bin/pg_config
checking for PQescapeStringConn in -lpq... yes
checking for pg_encoding_to_char within Postgres headers... yes
./configure: line 43633: syntax error near unexpected token `$PJPROJECT_DIR'
./configure: line 43633: `       PJPROJECT_CONFIGURE($PJPROJECT_DIR)'

My intuition told to install pjproject, so i did it, but output still the
same.

PD: George, are you using any yum repo to install libmongo-client. After a
bit of research I have installed the mongo driver form source, because i
didn't found any other method to install it.

Than you all.


On Mon, Mar 7, 2016 at 12:11 AM, Rafael Prado Rocchi <prado at practis.com.br>
wrote:

> Hello,
> you are doing the right way, I'll put some basic information with examples
> to contribute.
>
> When creating a MODULE that needs some dependency, there are two
> situations to check initially:
>
> 1) If the library is already present in configure.ac (and detected when
> you run ./configure), then you just need to put the dependency inside the
> Module source using <depend> tag
> 2) If it is a NEW library not present in configure.ac, then you have to
> change configure.ac and recreate 'configure' script.
>
>
> Supposing the new library included was for example 'openr2'
> You can do a quick check running:
>
> ./configure |grep openr2
>
>
> The result should make it clear if it was detected or nor detected, like
> the above example, that would give you this result:
>
> checking for openr2_chan_new in -lopenr2... yes
>
>
> The result "yes" above means the library was Found and it's ready for use.
> You correctly modified configure.ac and recreated configure.
> If you get a different result or no result, check the paths where the
> library lives in you linux distro and make the appropriate changes in
> configure.ac because configure was not able to find them, also check the
> logfile.
> Some types of library install theirselves in different places, and some
> linux distros have different places for them, special attention for 64bit
> distros vs 32bit distros.
>
>
> After succeed with ./configure you can tie dependency in any module source
> code by using the <depend> tag inside the module you need.
>
> example from chan_dahdi.c :
>
> /*** MODULEINFO
>         <depend>res_smdi</depend>
>         <depend>dahdi</depend>
>         <depend>tonezone</depend>
>         <depend>res_features</depend>
>         <use>pri</use>
>         <use>openr2</use>
>  ***/
>
> <depend> means module will NOT compile if dependency is not satisfied.
> <use> means module can make use of the library or not, it's not essencial
> and it WILL compile without the library being detected by ./configure.
>
>
> I hope you succeed.
>
>
> Regards,
> Rafael Prado
>
>
>
> De: <asterisk-dev-bounces at lists.digium.com> em nome de Catalin Stanciu <
> catacsdev at gmail.com>
> Responder para: Asterisk List <asterisk-dev at lists.digium.com>
> Data: domingo, 6 de março de 2016 17:56
> Para: Asterisk List <asterisk-dev at lists.digium.com>
> Assunto: [asterisk-dev] Add module dependecy in build system
>
> Hello,
>
> I am trying to include a module dependency in  the asterisk build system,
> but after some hours of research I couldn't found any useful information.
> To start I have followed the asterisk manual (
> https://wiki.asterisk.org/wiki/display/AST/Build+System+Architecture)
>
> 1. I have used the AST_EXT_LIB_SETUP and AST_EXT_LIB_CHECK functions to
> configure in configure.ac
> 2. I have included in build_tools/menuselect-deps.in the line similar to
> other dependencies
> 3. I have included in makeopts.in  two lines one for LIB and the other
> for INCLUDE.
> 4. Finally I have included in the module source code the lines with
> MODULEINFO
>
> I don't know what I am doing wrong but I think the documentation for build
>  system architecture must have some examples with explanation of complex
> cases.
>
> Thank you.
>
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