what is the standard ada include path

问题

Im using gnat4.6 on Ubuntu installed using apt-get. I need to know where to install downloaded libraries like APQ. What should I set my ADA_INCLUDE_PATH and ADA_OBJECTS_PATH to?

回答1:

The beauty of Ada support in Debian (on which Ubuntu is based) is that you don't need to mess with ADA_INCLUDE_PATH and friends; supported libraries are installed where the GNAT Project Manager expects to find them. Say gnatls -v to see the default values.

To use the system as intended, you will find it much simpler to use the GNAT Project Manager; you'd say, in your my_project.gpr file,

with "apq";
project My_Project is
   ...

and build with

$ gnatmake -P my_project

There's online documentation for GPR, but I wouldn't call it particularly user-friendly. There's a set of Youtube videos (I haven't looked at them in any detail; their stated interest is large systems, but hang in there).

回答2:

I use gnatmake to build; how do I cite my build paths in a correct way?

The relevant options are shown in 6.2 Switches for gnatmake: Source and library search path switches.

Addendum: The development package is libapq3.2.0-dev.

• The manual is in /usr/share/doc/libapq3.2.0-dev/manual.pdf.gz

• An example and corresponding .gpr file are in /usr/share/doc/libapq3.2.0-dev/examples. As @Simon suggested, the .gpr file begins:

  with "apq.gpr";
  project APQ.Samples is
  

• The Ada include files are in /usr/share/ada/adainclude/apq.

• The libraries are in /usr/lib.

$ dpkg -L libapq3.2.0-dev
/.
/usr
/usr/share
/usr/share/ada
/usr/share/ada/adainclude
/usr/share/ada/adainclude/apq
/usr/share/ada/adainclude/apq/apq_helper.ads
/usr/share/ada/adainclude/apq/apq_helper.adb
/usr/share/ada/adainclude/apq/apq.adb
/usr/share/ada/adainclude/apq/apq.ads
/usr/share/ada/adainclude/apq.gpr
/usr/share/doc
/usr/share/doc/libapq3.2.0-dev
/usr/share/doc/libapq3.2.0-dev/copyright
/usr/share/doc/libapq3.2.0-dev/manual.pdf.gz
/usr/share/doc/libapq3.2.0-dev/examples
/usr/share/doc/libapq3.2.0-dev/examples/apq-samples.adb
/usr/share/doc/libapq3.2.0-dev/examples/apq-samples.ads
/usr/share/doc/libapq3.2.0-dev/examples/apq-samples.gpr
/usr/lib
/usr/lib/libapq.a
/usr/lib/ada
/usr/lib/ada/adalib
/usr/lib/ada/adalib/apq
/usr/lib/ada/adalib/apq/apq_helper.ali
/usr/lib/ada/adalib/apq/apq.ali
/usr/share/doc/libapq3.2.0-dev/changelog.Debian.gz
/usr/lib/libapq.so

来源：https://stackoverflow.com/questions/14643609/what-is-the-standard-ada-include-path