1#
2# Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
3#
4# SPDX-License-Identifier: BSD-3-Clause
5#
6
7# This file contains the logic to identify and include any relevant
8# build environment specific make include files.
9
10ifndef BUILD_ENV_MK
11    BUILD_ENV_MK        :=      $(lastword $(MAKEFILE_LIST))
12
13    # Block possible built-in command definitions that are not fully portable.
14    # This traps occurences that need replacing with our OS portable macros
15    COPY                :=      $$(error "Replace COPY with call to SHELL_COPY or SHELL_COPY_TREE.")
16    CP                  :=      $$(error "Replace CP with call to SHELL_COPY or SHELL_COPY_TREE.")
17    DEL                 :=      $$(error "Replace DEL with call to SHELL_DELETE.")
18    MD                  :=      $$(error "Replace MD with call to MAKE_PREREQ_DIR.")
19    MKDIR               :=      $$(error "Replace MKDIR with call to MAKE_PREREQ_DIR.")
20    RD                  :=      $$(error "Replace RD with call to SHELL_REMOVE_DIR.")
21    RM                  :=      $$(error "Replace RM with call to SHELL_DELETE.")
22    RMDIR               :=      $$(error "Replace RMDIR with call to SHELL_REMOVE_DIR.")
23
24    ENV_FILE_TO_INCLUDE := unix.mk
25    ifdef OSTYPE
26        ifneq ($(findstring ${OSTYPE}, cygwin),)
27            ENV_FILE_TO_INCLUDE := cygwin.mk
28        else
29            ifneq ($(findstring ${OSTYPE}, MINGW32 mingw msys),)
30                ENV_FILE_TO_INCLUDE := msys.mk
31            endif
32        endif
33    else
34        ifdef MSYSTEM
35            # Although the MINGW MSYS shell sets OSTYPE as msys in its environment,
36            # it does not appear in the GNU make view of environment variables.
37            # We use MSYSTEM as an alternative, as that is seen by make
38            ifneq ($(findstring ${MSYSTEM}, MINGW32 mingw msys),)
39                OSTYPE ?= msys
40                ENV_FILE_TO_INCLUDE := msys.mk
41            endif
42        else
43            ifdef OS
44                ifneq ($(findstring ${OS}, Windows_NT),)
45                    ENV_FILE_TO_INCLUDE := windows.mk
46                endif
47            endif
48        endif
49    endif
50    include ${MAKE_HELPERS_DIRECTORY}${ENV_FILE_TO_INCLUDE}
51    ENV_FILE_TO_INCLUDE :=
52
53    ifndef SHELL_COPY
54        $(error "SHELL_COPY not defined for build environment.")
55    endif
56    ifndef SHELL_COPY_TREE
57        $(error "SHELL_COPY_TREE not defined for build environment.")
58    endif
59    ifndef SHELL_DELETE_ALL
60        $(error "SHELL_DELETE_ALL not defined for build environment.")
61    endif
62    ifndef SHELL_DELETE
63        $(error "SHELL_DELETE not defined for build environment.")
64    endif
65    ifndef MAKE_PREREQ_DIR
66        $(error "MAKE_PREREQ_DIR not defined for build environment.")
67    endif
68    ifndef SHELL_REMOVE_DIR
69        $(error "SHELL_REMOVE_DIR not defined for build environment.")
70    endif
71
72endif
73