BaseTools: Rationalise makefile generation

The GenMake.py script tests the platform environment
to determine the type of makefile that needs to be
generated. If a Windows build host is detected, the
makefile generated is of Nmake type. Otherwise a
GNUmake type is generated.

Furthermore, the <TARGET>_<TAGNAME>_<ARCH>_MAKE_PATH
option in tools_def.template defines the make tool
to use.
E.g.: for VS2017 this is configured to use Nmake, cf.
*_VS2017_*_MAKE_PATH = DEF(VS2017_BIN_HOST)\nmake.exe
while for GCC5 it is setup to use GNU make.
*_GCC5_*_MAKE_PATH = DEF(GCC_HOST_PREFIX)make

This prevents using the GCC compiler toolchain on a
Windows build host.

To address this issue this patch introduces 2 factors
to determine the generated makefile output.
  1. Platform -> to determine shell commands used
                 in makefile.
  2. MakeTool -> to determine the type of makefile
                 that needs to be generated.

Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>

Reviewed-by: Bob Feng <bob.c.feng@intel.com>

BaseTools/Source/Python/AutoGen/IncludesAutoGen.py

@@ -2,6 +2,7 @@
 # Build cache intermediate result and state
 #
 # Copyright (c) 2019 - 2020, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2020, ARM Limited. All rights reserved.<BR>
 # SPDX-License-Identifier: BSD-2-Clause-Patent
 #
 from Common.caching import cached_property
@@ -12,20 +13,6 @@ from Common.Misc import SaveFileOnChange, PathClass
 from Common.Misc import TemplateString
 import sys
 gIsFileMap = {}
-if sys.platform == "win32":
-    _INCLUDE_DEPS_TEMPLATE = TemplateString('''
-${BEGIN}
-!IF EXIST(${deps_file})
-!INCLUDE ${deps_file}
-!ENDIF
-${END}
-        ''')
-else:
-    _INCLUDE_DEPS_TEMPLATE = TemplateString('''
-${BEGIN}
--include ${deps_file}
-${END}
-        ''')
 
 DEP_FILE_TAIL = "# Updated \n"
 
@@ -59,6 +46,25 @@ class IncludesAutoGen():
 
     def CreateDepsInclude(self):
         deps_file = {'deps_file':self.deps_files}
+
+        MakePath = self.module_autogen.BuildOption.get('MAKE', {}).get('PATH')
+        if not MakePath:
+            EdkLogger.error("build", PARAMETER_MISSING, Message="No Make path available.")
+        elif "nmake" in MakePath:
+            _INCLUDE_DEPS_TEMPLATE = TemplateString('''
+        ${BEGIN}
+        !IF EXIST(${deps_file})
+        !INCLUDE ${deps_file}
+        !ENDIF
+        ${END}
+               ''')
+        else:
+            _INCLUDE_DEPS_TEMPLATE = TemplateString('''
+        ${BEGIN}
+        -include ${deps_file}
+        ${END}
+               ''')
+
         try:
             deps_include_str = _INCLUDE_DEPS_TEMPLATE.Replace(deps_file)
         except Exception as e: