Add initial HULK source and linker script

Rsconscript

@@ -45,32 +45,10 @@ class FontGen < Builder
   end
 end
 
-# FontGen Environment
 fontgen_env = env "fontgen", use: "freetype" do |env|
   env.Program("^/fontgen", glob("src/fontgen/**/*.c"))
 end
 
-## Kernel Environment
-#kernel_env = env "kernel" do |env|
-#  env.add_builder(Image)
-#  env.add_builder(FontGen)
-#  env["OBJDUMP"] = "x86_64-elf-objdump"
-#  env["SIZE"] = "x86_64-elf-size"
-#  env["CCFLAGS"] += %w[-ffreestanding -Wall -O2]
-#  env["LDFLAGS"] += %w[-ffreestanding -nostdlib -T src/link.ld]
-#  env["LDFLAGS"] += %W[-Wl,-Map,${_TARGET}.map]
-#  env["LIBS"] += %w[gcc]
-#  env.FontGen("^/kfont/kfont.c", "font/Hack-Regular.ttf",
-#             "fontgen" => fontgen_env.expand("^/fontgen"))
-#  env.barrier
-#  env["CPPPATH"] += ["#{env.build_root}/kfont"]
-#  env.Program("^/hos.elf", glob("src/**/*.{S,c}") + ["^/kfont/kfont.c"])
-#  env.depends("#{env.build_root}/hos.elf", "src/link.ld")
-#  env.Disassemble("^/hos.elf.txt", "^/hos.elf")
-#  env.Size("^/hos.elf.size", "^/hos.elf")
-#  env.Image("^/hos.img", %w[^/hos.elf])
-#end
-
 hello_env = env "hello", use: %w[ldc2 x86_64-w64-mingw32-gcc] do |env|
   env.add_builder(Image)
   env["sources"] = glob("src/hello/**/*.d")
@@ -86,6 +64,19 @@ hello_env = env "hello", use: %w[ldc2 x86_64-w64-mingw32-gcc] do |env|
   env.Image("^/hos.img", "^/BOOTX64.EFI")
 end
 
+hulk_env = env "hulk", use: %w[ldc2 x86_64-elf-gcc] do |env|
+  env["sources"] = glob("src/hulk/**/*.d")
+  env["DFLAGS"] += %w[-mtriple=x86_64-unknown-elf --betterC -release -O3 --wi --enable-cross-module-inlining]
+  env["D_IMPORT_PATH"] += %w[src/hulk src/common]
+  env["LD"] = "x86_64-elf-gcc"
+  env["LDFLAGS"] += %w[-nostdlib -Tsrc/hulk/hulk.ld -Wl,-Map,${_TARGET}.map]
+  env["LDCMD"] = %w[${LD} -o ${_TARGET} ${LDFLAGS} ${_SOURCES} ${LIBDIRPREFIX}${LIBPATH} ${LIBLINKPREFIX}${LIBS}]
+  env["OBJDUMP"] = "x86_64-elf-objdump"
+  env.Program("^/hulk.elf", "${sources}")
+  env.depends("^/hulk.elf", "src/hulk/hulk.ld")
+  env.Disassemble("^/hulk.txt", "^/hulk.elf")
+end
+
 task "run", desc: "Run HOS in QEMU" do
   Dir.mktmpdir do |tmpdir|
     img = hello_env.expand("^/hos.img")