add missing file

1 files changed, 108 insertions, 0 deletions

diff --git a/xmake/rules/go/build/target.lua b/xmake/rules/go/build/target.lua
new file mode 100644
index 000000000..ba1663140
--- /dev/null
+++ b/xmake/rules/go/build/target.lua
@@ -0,0 +1,108 @@
+--!A cross-platform build utility based on Lua
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--     http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
+-- Copyright (C) 2015-present, Xmake Open Source Community.
+--
+-- @author      ruki
+-- @file        target.lua
+--
+
+-- imports
+import("core.base.option")
+import("core.base.hashset")
+import("core.tool.compiler")
+import("core.project.depend")
+import("utils.progress")
+
+-- build the source files
+function build_sourcefiles(target, sourcebatch, opt)
+
+    -- get the target file
+    local targetfile = target:targetfile()
+
+    -- get source files and kind
+    local sourcefiles = sourcebatch.sourcefiles
+    local sourcekind  = sourcebatch.sourcekind
+
+    -- get depend file
+    local dependfile = target:dependfile(targetfile)
+
+    -- load compiler
+    local compinst = compiler.load(sourcekind, {target = target})
+
+    -- get compile flags
+    local compflags = compinst:compflags({target = target})
+
+    -- load dependent info
+    local dependinfo = option.get("rebuild") and {} or (depend.load(dependfile) or {})
+
+    -- need build this target?
+    local depvalues = {compinst:program(), compflags}
+    if not depend.is_changed(dependinfo, {lastmtime = os.mtime(targetfile), values = depvalues}) then
+        return
+    end
+
+    -- trace progress info
+    progress.show(opt.progress, "${color.build.target}linking.$(mode) %s", path.filename(targetfile))
+
+    -- trace verbose info
+    vprint(compinst:buildcmd(sourcefiles, targetfile, {target = target, compflags = compflags}))
+
+    -- flush io buffer to update progress info
+    io.flush()
+
+    -- build it (compile and link in one step for Go)
+    -- Go builds packages, so we need to change to the source directory
+    local srcdir = path.directory(sourcefiles[1])
+    local projectdir = os.projectdir()
+
+    -- convert targetfile to absolute path before changing directory
+    -- targetfile is relative to project directory, so use projectdir as base
+    local abs_targetfile = path.is_absolute(targetfile) and targetfile or path.absolute(targetfile, projectdir)
+
+    -- ensure output directory exists before changing directory
+    os.mkdir(path.directory(abs_targetfile))
+
+    -- convert source files to relative paths from source directory
+    local rel_sourcefiles = {}
+    for _, sourcefile in ipairs(sourcefiles) do
+        local abs_sourcefile = path.is_absolute(sourcefile) and sourcefile or path.absolute(sourcefile, projectdir)
+        local rel_sourcefile = path.relative(abs_sourcefile, srcdir)
+        table.insert(rel_sourcefiles, rel_sourcefile)
+    end
+
+    local oldir = os.cd(srcdir)
+    dependinfo.files = {}
+    assert(compinst:build(rel_sourcefiles, abs_targetfile, {target = target, dependinfo = dependinfo, compflags = compflags}))
+    os.cd(oldir)
+
+    -- update files and values to the dependent file
+    dependinfo.values = depvalues
+    table.join2(dependinfo.files, sourcefiles)
+    depend.save(dependinfo, dependfile)
+end
+
+-- build target
+function main(target, opt)
+
+    -- @note only support one source kind!
+    local sourcebatches = target:sourcebatches()
+    if sourcebatches then
+        local sourcebatch = sourcebatches["go.build"]
+        if sourcebatch then
+            build_sourcefiles(target, sourcebatch, opt)
+        end
+    end
+end
+