antlr4: add package

[star-hengxing]

No description provided.

[star-hengxing]

expected:

target("antlr4-lua")
    set_kind("static")
    add_files("g4/LuaLexer.g4", {rules = "@antlr4/lexer"})
    add_files("g4/LuaParser.g4", {rules = "@antlr4/parser"})
    -- add_rules("@antlr4/lexer")
    -- add_rules("@antlr4/parser")

    add_includedirs(".")

    add_packages("antlr4", "antlr4-runtime")

    on_load(function (target)
        if target:is_shared() then
            target:add("defines", "ANTLR4CPP_EXPORTS")
        elseif target:is_static() then
            target:add("defines", "ANTLR4CPP_STATIC", {public = true})
        end
    end)

But add_files can't work with package rule, it's bug?

[waruqi]

为啥解压出来会调到 source 目录外面去？

[star-hengxing]

直接下的 jar，不会解压

[waruqi]

添加路径环境变量，用相对路径，不要用 package:installdir()，否则跑到云端预编译，路径就不对了

然后再用 package:mark_as_pathenv("CLASSPATH") 将它标记为路径，就能自动处理相对路径了。

[waruqi]

expected:

target("antlr4-lua")
    set_kind("static")
    add_files("g4/LuaLexer.g4", {rules = "@antlr4/lexer"})
    add_files("g4/LuaParser.g4", {rules = "@antlr4/parser"})
    -- add_rules("@antlr4/lexer")
    -- add_rules("@antlr4/parser")

    add_includedirs(".")

    add_packages("antlr4", "antlr4-runtime")

    on_load(function (target)
        if target:is_shared() then
            target:add("defines", "ANTLR4CPP_EXPORTS")
        elseif target:is_static() then
            target:add("defines", "ANTLR4CPP_STATIC", {public = true})
        end
    end)

But add_files can't work with package rule, it's bug?

包 rule 是有限制的，有些地方不好实现，目前不支持 add_files，只能走 add_rules

[waruqi]

直接用 target:pkgenvs() 就行了。

[star-hengxing]

但这里拿到的 CLASSPATH 还是相对路径

[waruqi]

回头我看下 这两天还没空看

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I'll check it out later. I haven't had time to look at it in the past two days.