From 53e8d28f6f8f1ebe5bd33b7733aef9c878251f78 Mon Sep 17 00:00:00 2001
From: ruki <waruqi@gmail.com>
Date: Sun, 29 May 2022 16:01:44 +0800
Subject: add linemarkers policy

---
 xmake/core/project/policy.lua    |  2 ++
 xmake/modules/core/tools/cl.lua  | 14 ++++++++++++++
 xmake/modules/core/tools/gcc.lua | 14 ++++++++++++++
 3 files changed, 30 insertions(+)

diff --git a/xmake/core/project/policy.lua b/xmake/core/project/policy.lua
index e8921cefb..7f3b19ad0 100644
--- a/xmake/core/project/policy.lua
+++ b/xmake/core/project/policy.lua
@@ -47,6 +47,8 @@ function policy.policies()
             ["build.merge_archive"]              = {description = "Enable merge archive intead of linking for all dependent targets.", default = false, type = "boolean"},
             -- C/C++ build cache
             ["build.ccache"]                     = {description = "Enable C/C++ build cache.", default = true, type = "boolean"},
+            -- preprocessor configuration for ccache/distcc, we can disable linemarkers to speed up preprocess
+            ["preprocessor.linemarkers"]         = {description = "Enable linemarkers for preprocessor.", default = true, type = "boolean"},
             -- we need enable longpaths when building target or installing package
             ["platform.longpaths"]               = {description = "Enable long paths when building target or installing package on windows.", default = false, type = "boolean"},
             -- lock required packages
diff --git a/xmake/modules/core/tools/cl.lua b/xmake/modules/core/tools/cl.lua
index a832dab4c..fdcce6d45 100644
--- a/xmake/modules/core/tools/cl.lua
+++ b/xmake/modules/core/tools/cl.lua
@@ -450,6 +450,17 @@ function _preprocess(program, argv, opt)
         return false
     end
 
+    -- disable linemarkers?
+    local linemarkers = _g.linemarkers
+    if linemarkers == nil then
+        if os.isfile(os.projectfile()) and project.policy("preprocessor.linemarkers") == false then
+            linemarkers = false
+        else
+            linemarkers = true
+        end
+        _g.linemarkers = linemarkers
+    end
+
     -- do preprocess
     local cppfile = path.join(path.directory(objectfile), path.basename(objectfile) .. path.extension(sourcefile))
     local cppfiledir = path.directory(cppfile)
@@ -457,6 +468,9 @@ function _preprocess(program, argv, opt)
         os.mkdir(cppfiledir)
     end
     table.insert(cppflags, "-P")
+    if linemarkers == false then
+        table.insert(cppflags, "-EP")
+    end
     table.insert(cppflags, "-Fi" .. cppfile)
     table.insert(cppflags, sourcefile)
     return try{ function()
diff --git a/xmake/modules/core/tools/gcc.lua b/xmake/modules/core/tools/gcc.lua
index 79bc6a776..f154fb1ee 100644
--- a/xmake/modules/core/tools/gcc.lua
+++ b/xmake/modules/core/tools/gcc.lua
@@ -448,6 +448,17 @@ function _preprocess(program, argv, opt)
         fdirectives_only = true
     end
 
+    -- disable linemarkers?
+    local linemarkers = _g.linemarkers
+    if linemarkers == nil then
+        if os.isfile(os.projectfile()) and project.policy("preprocessor.linemarkers") == false then
+            linemarkers = false
+        else
+            linemarkers = true
+        end
+        _g.linemarkers = linemarkers
+    end
+
     -- do preprocess
     local cppfile = path.join(path.directory(objectfile), path.basename(objectfile) .. path.extension(sourcefile))
     local cppfiledir = path.directory(cppfile)
@@ -460,6 +471,9 @@ function _preprocess(program, argv, opt)
     if fdirectives_only then
         table.insert(cppflags, "-fdirectives-only")
     end
+    if linemarkers == false then
+        table.insert(cppflags, "-P")
+    end
     table.insert(cppflags, "-o")
     table.insert(cppflags, cppfile)
     table.insert(cppflags, sourcefile)
-- 
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