Added mrbgems/mruby-bin-utils

mrbgems/default.gembox

@@ -22,4 +22,7 @@ MRuby::GemBox.new do |conf|
 
   # Generate mruby-config command
   conf.gem :core => "mruby-bin-config"
+
+  # Generate mruby-cc and other commands
+  conf.gem :core => "mruby-bin-utils"
 end

mrbgems/mruby-bin-utils/README.md

@@ -0,0 +1,29 @@
+# mruby-bin-utils
+
+This is a command line program that serves as a wrapper to compile and link source code requiring libmruby.
+
+The name is a play on GNU Binutils.
+
+## How to build and use it
+
+Add this mruby-bin-utils to your build configuration file and build mruby.
+
+```ruby
+# in your build configuration file
+
+MRuby::Build.new do |conf|
+  ...
+  conf.gem core: "mruby-bin-utils"
+  ...
+end
+```
+
+Then compile and link your code in the generated command line program.
+
+```console
+$ bin/mruby-cc yourcode.c
+$ bin/mruby-c++ yourcode.cxx
+$ bin/mruby-as yourcode.s
+$ bin/mruby-objc yourcode.m
+$ bin/mruby-ld ...
+```

mrbgems/mruby-bin-utils/bintest/test.rb

@@ -0,0 +1,14 @@
+require "pathname"
+
+cc_command = File.join(ENV["BUILD_DIR"], "bin/mruby-cc")
+testdata = Pathname(__dir__).parent + "testdata"
+
+assert "C compile" do
+  system *%W(#{cc_command} #{testdata + "test1.c"})
+  assert_true $?.success?
+end
+
+assert "C compile (failing)" do
+  system *%W(#{cc_command} #{testdata + "test2.c"}), err: File::NULL
+  assert_false $?.success?
+end

mrbgems/mruby-bin-utils/mrbgem.rake

@@ -0,0 +1,84 @@
+#!ruby
+
+MRuby::Gem::Specification.new("mruby-bin-utils") do |spec|
+  spec.summary = "one-shot mruby C/C++ compiler and utilities"
+  spec.license = "MIT"
+  spec.author  = "mruby developers"
+  spec.add_dependency "mruby-bin-config", core: "mruby-bin-config"
+
+  if ENV["OS"] =~ /windows/i
+    msvc = build.toolchains.find { |e| e == "visualcpp" } ? true : false
+    binext = ".bat"
+    bingen = ->(bin, cflags, ldflags) {
+      (cflags, ldflags) = [cflags, ldflags].map { |flags|
+        flags.map { |f|
+          varname = %(mrbc_#{f.sub(/^--/, "").gsub(/[^\w]+/, "_")})
+          extractor = %(for /f "usebackq delims=" %%i in (`%mrbconfig% #{f}`) do set #{varname}=%%i)
+          ["%#{varname}%", extractor]
+        }
+      }
+
+      withlink = "/link " if msvc && bin != "mruby-ld"
+
+      <<~CODE
+        @echo off
+
+        if "%1" == "" (
+        \techo %~n0: no files given 1>&2
+        \texit /b 1
+        )
+
+        set mrbconfig="%~dp0.\\mruby-config.bat"
+        #{cflags.map { |v, e| e }.join("\n")}
+        #{ldflags.map { |v, e| e }.join("\n")}
+
+        call #{cflags.map { |v, e| v }.join(" ")} %* #{withlink}#{ldflags.map { |v, e| v }.join(" ")}
+      CODE
+    }
+  else
+    binext = ""
+    bingen = ->(bin, cflags, ldflags) {
+      <<~CODE
+        #!/bin/sh
+
+        if [ "$#" -lt 1 ]
+        then
+        \techo "$(basename "$0"): no files given" 1>&2
+        \texit 1
+        fi
+
+        mrbconfig="$(dirname "$0")/mruby-config"
+
+        $("$mrbconfig" #{cflags.join(" ")}) "$@" $("$mrbconfig" #{ldflags.join(" ")})
+      CODE
+    }
+  end
+
+  if spec.build.kind_of?(MRuby::CrossBuild)
+    destdir = "#{build.build_dir}/host-bin"
+    addbin = ->(dest) { build.products << dest }
+  else
+    destdir = "#{build.build_dir}/bin"
+    addbin = ->(dest) { build.bins << File.basename(dest) }
+  end
+
+  [
+    ["mruby-cc",    %w(--cc --cflags),      %w(--ldflags --ldflags-before-libs --libs)],
+    ["mruby-c++",   %w(--cxx --cxxflags),   %w(--ldflags --ldflags-before-libs --libs)],
+    ["mruby-as",    %w(--as --asflags),     %w(--ldflags --ldflags-before-libs --libs)],
+    ["mruby-objc",  %w(--objc --objcflags), %w(--ldflags --ldflags-before-libs --libs)],
+    ["mruby-ld",    %w(--ld),               %w(--ldflags --ldflags-before-libs --libs)],
+  ].each do |bin, cflags, ldflags|
+    destpath = File.join(destdir, "#{bin}#{binext}")
+
+    addbin.call(destpath)
+
+    file destpath => __FILE__ do |t|
+      _pp "GEN", destpath.relative_path
+      mkdir_p destdir
+
+      # NOTE: No line break code is specified, so text appropriate to the environment is output
+      File.write(destpath, bingen.call(bin, cflags, ldflags), perm: 0755)
+    end
+  end
+end

mrbgems/mruby-bin-utils/testdata/test1.c

@@ -0,0 +1,9 @@
+#include <mruby.h>
+
+int
+main(int argc, char **argv)
+{
+  mrb_state *mrb = mrb_open();
+  mrb_close(mrb);
+  return 0;
+}

mrbgems/mruby-bin-utils/testdata/test2.c

@@ -0,0 +1 @@
+#error "INTENTIONAL ERROR FOR FAILING!"