在OS/X上用gnat编译ada库

Question

我已经从Adacore获得了消息来源，所以它应该能工作--我也在Adacore上留下了一个“问题”，但可能需要一些时间才能解决这个问题。我怀疑我可能做错了什么，有什么建议吗？

问题是：

$ gnat make gnatcoll-json.adb

    gcc -c gnatcoll-json.adb

    gnatcoll-json.adb:33:23: missing body for "Prepend" declared at gnatcoll-json.ads:64

    gnatcoll-json.adb:33:23: missing body for "Create" declared at gnatcoll-json.ads:99

    gnatcoll-json.adb:33:23: missing body for "Set_Field" declared at gnatcoll-json.ads:144

    gnatcoll-json.adb:33:23: missing body for "Get" declared at gnatcoll-json.ads:173

    gnatcoll-json.adb:33:23: missing body for "Get" declared at gnatcoll-json.ads:206

    gnatcoll-json.adb:454:63: prefix of dereference must be an access type

    gnatcoll-json.adb:641:33: invalid operand types for operator "/="    gnatcoll-json.adb:641:33: left operand has private type "UTF8_Unbounded_String" defined at gnatcoll-json.ads:47

    gnatcoll-json.adb:641:33: right operand has an access type

    gnatcoll-json.adb:642:19: no candidate interpretations match the actuals:

    gnatcoll-json.adb:642:28: expected type "Counter" defined at gnatcoll-json.ads:239

    gnatcoll-json.adb:642:28: found private type "Ada.Strings.Unbounded.Unbounded_String"

    gnatcoll-json.adb:642:28:   ==> in call to "Free" at gnatcoll-json.ads:289

    gnatcoll-json.adb:642:28:   ==> in call to "Free" at gnatcoll-json.ads:287

    gnatcoll-json.adb:642:28:   ==> in call to "Free" at gnatcoll-json.ads:285

    gnatcoll-json.adb:642:28:   ==> in call to "Free" at a-strunb.ads:88

    gnatcoll-json.adb:714:24: expected private type "Ada.Strings.Unbounded.Unbounded_String"

    gnatcoll-json.adb:714:24: found type access to "UTF8_String" defined at line 714

    gnatcoll-json.adb:841:28: prefix of dereference must be an access type

    gnatmake: "gnatcoll-json.adb" compilation error

我可以看到，文件中缺少的似乎是第一个问题。当然，例如，Prepend的主体不在该文件中，但我认为主体应该在gnatcoll.adb文件中，而不是gnatcoll.ads文件中。

Answer 1

使用相当标准的configure/make/make install流程构建GNATColl。您可以通过查看发行版中的docs/building.rst来了解更多信息；我没有用于构建可安装版本的 program，但它是可读性很强的。还有docs/json.rst可以告诉您如何在安装GNATColl之后使用JSON支持。

在发行版的根目录中，

$ ./configure --prefix=/your/preferred/install/location # default is /usr/local
$ make
$ sudo make install # if /your/preferred/install/location isn't user-writable