modules/freetype2/builds/detect.mk

   1 #
   2 # FreeType 2 host platform detection rules
   3 #
   4
   5
   6 # Copyright 1996-2000, 2001, 2002, 2003, 2006, 2008 by
   7 # David Turner, Robert Wilhelm, and Werner Lemberg.
   8 #
   9 # This file is part of the FreeType project, and may only be used, modified,
  10 # and distributed under the terms of the FreeType project license,
  11 # LICENSE.TXT.  By continuing to use, modify, or distribute this file you
  12 # indicate that you have read the license and understand and accept it
  13 # fully.
  14
  15
  16 # This sub-Makefile is in charge of detecting the current platform.  It sets
  17 # the following variables:
  18 #
  19 #   BUILD_DIR    The configuration and system-specific directory.  Usually
  20 #                `freetype/builds/$(PLATFORM)' but can be different for
  21 #                custom builds of the library.
  22 #
  23 # The following variables must be defined in system specific `detect.mk'
  24 # files:
  25 #
  26 #   PLATFORM     The detected platform.  This will default to `ansi' if
  27 #                auto-detection fails.
  28 #   CONFIG_FILE  The configuration sub-makefile to use.  This usually depends
  29 #                on the compiler defined in the `CC' environment variable.
  30 #   DELETE       The shell command used to remove a given file.
  31 #   COPY         The shell command used to copy one file.
  32 #   SEP          The platform-specific directory separator.
  33 #   COMPILER_SEP The separator used in arguments of the compilation tools.
  34 #   CC           The compiler to use.
  35 #
  36 # You need to set the following variable(s) before calling it:
  37 #
  38 #   TOP_DIR      The top-most directory in the FreeType library source
  39 #                hierarchy.  If not defined, it will default to `.'.
  40
  41 # Set auto-detection default to `ansi' resp. UNIX-like operating systems.
  42 #
  43 PLATFORM     := ansi
  44 DELETE       := $(RM)
  45 COPY         := cp
  46 CAT          := cat
  47 SEP          := /
  48
  49 BUILD_CONFIG := $(TOP_DIR)/builds
  50
  51 # These two assignments must be delayed.
  52 BUILD_DIR    = $(BUILD_CONFIG)/$(PLATFORM)
  53 CONFIG_RULES = $(BUILD_DIR)/$(CONFIG_FILE)
  54
  55 # We define the BACKSLASH variable to hold a single back-slash character.
  56 # This is needed because a line like
  57 #
  58 #   SEP := \
  59 #
  60 # does not work with GNU Make (the backslash is interpreted as a line
  61 # continuation).  While a line like
  62 #
  63 #   SEP := \\
  64 #
  65 # really defines $(SEP) as `\' on Unix, and `\\' on Dos and Windows!
  66 #
  67 BACKSLASH := $(strip \ )
  68
  69 # Find all auto-detectable platforms.
  70 #
  71 PLATFORMS := $(notdir $(subst /detect.mk,,$(wildcard $(BUILD_CONFIG)/*/detect.mk)))
  72 .PHONY: $(PLATFORMS) ansi
  73
  74 # Filter out platform specified as setup target.
  75 #
  76 PLATFORM := $(firstword $(filter $(MAKECMDGOALS),$(PLATFORMS)))
  77
  78 # If no setup target platform was specified, enable auto-detection/
  79 # default platform.
  80 #
  81 ifeq ($(PLATFORM),)
  82   PLATFORM := ansi
  83 endif
  84
  85 # If the user has explicitly asked for `ansi' on the command line,
  86 # disable auto-detection.
  87 #
  88 ifeq ($(findstring ansi,$(MAKECMDGOALS)),)
  89   # Now, include all detection rule files found in the `builds/<system>'
  90   # directories.  Note that the calling order of the various `detect.mk'
  91   # files isn't predictable.
  92   #
  93   include $(wildcard $(BUILD_CONFIG)/*/detect.mk)
  94 endif
  95
  96 # In case no detection rule file was successful, use the default.
  97 #
  98 ifndef CONFIG_FILE
  99   CONFIG_FILE := ansi.mk
 100   setup: std_setup
 101   .PHONY: setup
 102 endif
 103
 104 # The following targets are equivalent, with the exception that they use
 105 # a slightly different syntax for the `echo' command.
 106 #
 107 # std_setup: defined for most (i.e. Unix-like) platforms
 108 # dos_setup: defined for Dos-ish platforms like Dos, Windows & OS/2
 109 #
 110 .PHONY: std_setup dos_setup
 111
 112 std_setup:
 113         @echo ""
 114         @echo "$(PROJECT_TITLE) build system -- automatic system detection"
 115         @echo ""
 116         @echo "The following settings are used:"
 117         @echo ""
 118         @echo "  platform                    $(PLATFORM)"
 119         @echo "  compiler                    $(CC)"
 120         @echo "  configuration directory     $(BUILD_DIR)"
 121         @echo "  configuration rules         $(CONFIG_RULES)"
 122         @echo ""
 123         @echo "If this does not correspond to your system or settings please remove the file"
 124         @echo "\`$(CONFIG_MK)' from this directory then read the INSTALL file for help."
 125         @echo ""
 126         @echo "Otherwise, simply type \`$(MAKE)' again to build the library,"
 127         @echo "or \`$(MAKE) refdoc' to build the API reference (the latter needs python)."
 128         @echo ""
 129         @$(COPY) $(CONFIG_RULES) $(CONFIG_MK)
 130
 131
 132 # Special case for Dos, Windows, OS/2, where echo "" doesn't work correctly!
 133 #
 134 dos_setup:
 135         @type builds$(SEP)newline
 136         @echo $(PROJECT_TITLE) build system -- automatic system detection
 137         @type builds$(SEP)newline
 138         @echo The following settings are used:
 139         @type builds$(SEP)newline
 140         @echo   platformÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ$(PLATFORM)
 141         @echo   compilerÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ$(CC)
 142         @echo   configuration directoryÿÿÿÿÿÿ$(subst /,$(SEP),$(BUILD_DIR))
 143         @echo   configuration rulesÿÿÿÿÿÿÿÿÿÿ$(subst /,$(SEP),$(CONFIG_RULES))
 144         @type builds$(SEP)newline
 145         @echo If this does not correspond to your system or settings please remove the file
 146         @echo '$(CONFIG_MK)' from this directory then read the INSTALL file for help.
 147         @type builds$(SEP)newline
 148         @echo Otherwise, simply type 'make' again to build the library.
 149         @echo or 'make refdoc' to build the API reference (the latter needs python).
 150         @type builds$(SEP)newline
 151         @$(COPY) $(subst /,$(SEP),$(CONFIG_RULES) $(CONFIG_MK)) > nul
 152
 153
 154 # EOF