AWS for Ada的安装问题

Question

我今晚第一次在Macbook上安装了Ada和AWS.

安装似乎一切都很成功,但我感觉AWS没有安装到正确的目录.

GNAT位于/ usr/local/gnat中.

AWS makefile.conf说,

AWS will be installed under $(prefix). Update this variable to point to
the install directory. By default, it is set to the current GNAT root
directory to have AWS project files automatically available.

所以我没有改变目标.

但是当我尝试从系统中除AWS demos文件夹之外的任何地方编译hello_world时,我收到此错误:

~/projects/ada:gnatmake hello.adb
gcc -c hello.adb
hello.adb:1:06: file "aws.ads" not found
hello.adb:2:06: file "aws.ads" not found
hello.adb:3:06: file "aws.ads" not found
hello.adb:4:06: file "aws.ads" not found
gnatmake: "hello.adb" compilation error

如何确保AWS已正确安装,或者如果不正确则移动它？

Answer 1

答案(好吧,更多的是对知情人士的暗示)在于"让AWS项目文件自动可用".

在GNAT上下文中,"项目文件"表示一种类型的文件,.gpr它告诉构建器(gnatmake或gprbuild)在何处查找源文件,如何编译它们,以及在何处查找"此"项目所依赖的库.

创建hello.gpr:

with "aws";
project Hello is
   for Main use ("hello.adb");
end Hello;

(那是非常小的)然后

with AWS;
with Ada.Text_IO;
procedure Hello is
begin
   Ada.Text_IO.Put_Line ("AWS version is " & AWS.Version);
end Hello;

用.编译

gprbuild -P hello.gpr

输出

AWS version is 2.10.0w

有关于gprbuild和gnatmake的在线信息(gnatmake已被取代gprbuild); 您安装的GNAT(子目录)中可能存在信息${prefix}/share/doc.