Re: Converting a simple makefile in a GPS project.

["Rego, P." <pvrego@gmail.com>]

> I'd have given up on gpr and kept the makefile, since it's simpler (and
> better documented); why are you bothering with the gpr file?

I did not find a way of using the makefiles properly in GPS without having to configure the Build>Settings>Targets Compile/Build options and without messing up my OS configurations on other GPS projects (with other cross-compilers, etc); but actually I did not look for it harder. Running the makefiles from command-line or emacs is no problem, but I like to code using GPS stuffs, so I found that .gpr configs are easier (however the documentation does not help so much). 

> Here's what I use to run 'auto_text_io', which is similar. First,
> auto_text_io.xml, in <gnat>/share/gprconfig:
> 
> <?xml version="1.0" ?>
> <!-- Run auto_text_io
> 
> To tell gprbuild how to run auto_text_io:
> 
> copy this file to <gnat>/share/gprconfig
> 
> use gprbuild - -autoconf
> 
> -->
> <gprconfig>
>   <compiler_description>
>     <name>Auto_Text_IO</name>
>     <executable>auto_text_io</executable>
>     <languages>Auto_Text_IO</languages>
>     <version>
>       <external>auto_text_io -?</external>
>       <grep regexp="auto_text_io version .*"/>
>     </version>
>     <!-- target must match gprconfig target -->
>     <target>
>       <external>${PREFIX}gcc -dumpmachine</external>
>       <grep regexp="[^\r\n]+"></grep>
>     </target>
>   </compiler_description>
> 
>   <configuration>
>     <compilers>
>       <compiler language="Auto_Text_IO"/>
>     </compilers>
>     <config>
>    package Compiler is
>       for Driver ("Auto_Text_IO") use "${PATH}auto_text_io";
>       for Include_Path ("Auto_Text_IO") use "ADA_INCLUDE_PATH";
>       for Required_Switches ("Auto_Text_IO") use ("-f");
>       for Dependency_Switches ("Auto_Text_IO") use ("-M");
>    end Compiler;
>    package Naming is
>       for Body_Suffix ("Auto_Text_IO") use ".ads";
>    end Naming;
>    for Inherit_Source_Path ("Auto_Text_IO") use ("Ada");
>    for Object_Generated ("Auto_Text_IO") use "false";
>     </config>
>   </configuration>
> </gprconfig>
> 
> 
> Then a gpr file sal_text_io.gpr:
> 
> project SAL_Text_IO is
>    for Languages use ("Auto_Text_IO");
>    for Source_Dirs use
>      ("../Source_Common");
>    for Object_Dir use "auto";
>    for Source_Files use
>      ("sal-gen_math-gen_den_hart.ads",
>       "sal-gen_math-gen_dof_2.ads",
>       "sal-gen_math-gen_dof_3.ads",
>       "sal-gen_math-gen_dof_6.ads",
>       "sal-gen_math-gen_manipulator.ads",
>       "sal-gen_math-gen_polynomials.ads",
>       "sal-gen_math-gen_scalar.ads",
>       "sal-interfaces_more.ads",
>       "sal-time_conversions.ads");
> end SAL_Text_IO;
> 
> and a makefile rule to run it:
> 
> text_io :
> 	gprbuild -p -k --autoconf=../auto/auto.cgpr --target=x86-windows -Psal_text_io.gpr 
> 
> Your application should be similar.

Thanks again. I will try it.