Files
harbour-core/config/detfun.mk
vszakats a4a357a18b 2013-03-15 11:12 UTC+0100 Viktor Szakats (harbour syenar.net)
* /harbour/* -> /*
    * moved whole Harbour source tree one level up to
      avoid single 'harbour' top dir
2013-03-15 11:13:30 +01:00

160 lines
7.1 KiB
Makefile

#
# $Id$
#
# ---------------------------------------------------------------
# Copyright 2009 Viktor Szakats (harbour syenar.net)
# See COPYING.txt for licensing terms.
#
# This make file will detect optional 3rd party components
# used in Harbour core code. Generic function.
# ---------------------------------------------------------------
# USAGE:
# ON CALL:
# _DET_DSP_NAME - human readable name of 3rd party component.
# _DET_VAR_INC_ - variable name containing user component control (typically "HB_WITH_*").
# _DET_VAR_HAS_ - variable name receiving detection result (typically "HB_HAS_*").
# _DET_FLT_PLAT - positive and negative platform filters. Prefix negative ones with '!' char.
# _DET_FLT_COMP - positive and negative compiler filters. Prefix negative ones with '!' char.
# _DET_INC_DEFP - default location to look at. Not effective in 'HB_BUILD_3RDEXT=no' mode.
# (you must use absolute paths only.)
# _DET_INC_LOCL - embedded location to look at.
# (you must use paths relative to Harbour source tree root.)
# _DET_INC_HEAD - header filename to look for. Unless looking for a directory, prefix with forward slash.
# - variable name specified by _DET_VAR_INC_ (typically "HB_WITH_*") containing:
# (empty) or yes - will enable 3rd party component if found on default locations.
# no - will disable 3rd party component.
# force - will forcibly enable 3rd party component, bypassing location checks,
# HB_HAS_* will have the content '.' (as local dir). In this case user
# is responsible to pass -I C compiler option manually.
# local - will choose locally hosted version of 3rd party component.
# nolocal - will disable using locally hosted version of 3rd party component.
# <dirlist> - will specify locations to check for the 3rd party component.
# ON RETURN:
# - above variables cleared.
# - _DET_RES_TEXT with human readable detection result.
# - variable name specified in _DET_VAR_HAS_ (typically "HB_HAS_*") will
# have any these values:
# (empty) - we can't use this component
# <dirlist> - component headers were found at these locations (typically one)
# - variable name specified in _DET_VAR_HAS_ + "_LOCAL" (typically "HB_HAS_*_LOCAL") will
# be non-empty if we're using the locally hosted version of the package.
# show verbose information (empty|yes|very)
ifneq ($(_DET_OPT_VERB),)
do_info = $(info ! Component: $(1))
else
do_info =
endif
# preparing switch to HB_WITH_* variables from HB_INC_*
ifneq ($($(subst HB_INC_,HB_WITH_,$(_DET_VAR_INC_))),)
$(_DET_VAR_INC_) := $($(subst HB_INC_,HB_WITH_,$(_DET_VAR_INC_)))
endif
ifneq ($(HB_SRC_ROOTPATH),)
_DET_INC_LOCL := $(HB_SRC_ROOTPATH)$(_DET_INC_LOCL)
else
_DET_INC_LOCL := $(realpath $(TOP)$(ROOT)$(_DET_INC_LOCL))
endif
_DET_RES_TEXT :=
ifeq ($($(_DET_VAR_HAS_)),)
$(_DET_VAR_HAS_)_LOCAL :=
ifneq ($($(_DET_VAR_INC_)),no)
_DET_POS := $(filter-out !%,$(_DET_FLT_PLAT))
_DET_NEG := $(subst !,,$(filter !%,$(_DET_FLT_PLAT)))
ifneq ($(if $(_DET_POS),$(filter $(HB_PLATFORM),$(_DET_POS)),ok),)
ifeq ($(filter $(HB_PLATFORM),$(_DET_NEG)),)
_DET_POS := $(filter-out !%,$(_DET_FLT_COMP))
_DET_NEG := $(subst !,,$(filter !%,$(_DET_FLT_COMP)))
ifneq ($(if $(_DET_POS),$(filter $(HB_COMPILER),$(_DET_POS)),ok),)
ifeq ($(filter $(HB_COMPILER),$(_DET_NEG)),)
$(_DET_VAR_HAS_) := $($(_DET_VAR_INC_))
ifeq ($($(_DET_VAR_INC_)),yes)
$(_DET_VAR_HAS_) :=
else
# bypass local check
ifeq ($($(_DET_VAR_INC_)),force)
$(_DET_VAR_HAS_) := .
endif
endif
ifeq ($($(_DET_VAR_HAS_)),)
ifneq ($(HB_BUILD_3RDEXT),no)
$(_DET_VAR_HAS_) := $(_DET_INC_DEFP)
endif
$(_DET_VAR_HAS_) += $(_DET_INC_LOCL)
else
ifeq ($($(_DET_VAR_HAS_)),nolocal)
ifneq ($(HB_BUILD_3RDEXT),no)
$(_DET_VAR_HAS_) := $(_DET_INC_DEFP)
endif
endif
endif
ifeq ($($(_DET_VAR_INC_)),local)
$(_DET_VAR_HAS_) := $(_DET_INC_LOCL)
endif
ifneq ($($(_DET_VAR_HAS_)),)
ifneq ($($(_DET_VAR_HAS_)),.)
$(_DET_VAR_HAS_) := $(strip $(firstword $(foreach d,$($(_DET_VAR_HAS_)),$(if $(wildcard $(d)$(_DET_INC_HEAD)),$(d),))))
ifeq ($($(_DET_VAR_HAS_)),)
_DET_RES_TEXT := '$(_DET_DSP_NAME)' not found
ifneq ($(HB_HOST_PLAT_UNIX),yes)
_DET_RES_TEXT := $(_DET_RES_TEXT). Configure with $(subst HB_INC_,HB_WITH_,$(_DET_VAR_INC_)).
endif
$(call do_info,$(_DET_RES_TEXT))
else
# detect if the component was found in locally hosted dir
ifneq ($(_DET_INC_LOCL),)
ifneq ($(filter $(_DET_INC_LOCL),$($(_DET_VAR_HAS_))),)
$(_DET_VAR_HAS_)_LOCAL := (local)
endif
endif
_DET_RES_TEXT := '$(_DET_DSP_NAME)' found in $($(_DET_VAR_HAS_)) $($(_DET_VAR_HAS_)_LOCAL)
ifeq ($(_DET_OPT_VERB),very)
$(call do_info,$(_DET_RES_TEXT))
endif
endif
endif
else
_DET_RES_TEXT := '$(_DET_DSP_NAME)' location not specified
$(call do_info,$(_DET_RES_TEXT))
endif
else
_DET_RES_TEXT := '$(_DET_DSP_NAME)' not supported with $(HB_COMPILER) compiler
$(call do_info,$(_DET_RES_TEXT))
endif
else
_DET_RES_TEXT := '$(_DET_DSP_NAME)' not supported with $(HB_COMPILER) compiler
$(call do_info,$(_DET_RES_TEXT))
endif
else
_DET_RES_TEXT := '$(_DET_DSP_NAME)' not supported on $(HB_PLATFORM) platform
$(call do_info,$(_DET_RES_TEXT))
endif
else
_DET_RES_TEXT := '$(_DET_DSP_NAME)' not supported on $(HB_PLATFORM) platform
$(call do_info,$(_DET_RES_TEXT))
endif
_DET_POS :=
_DET_NEG :=
else
_DET_RES_TEXT := '$(_DET_DSP_NAME)' explicitly disabled
$(call do_info,$(_DET_RES_TEXT))
endif
endif
export $(_DET_VAR_HAS_)
export $(_DET_VAR_HAS_)_LOCAL
_DET_DSP_NAME :=
_DET_VAR_INC_ :=
_DET_VAR_HAS_ :=
_DET_FLT_PLAT :=
_DET_FLT_COMP :=
_DET_INC_DEFP :=
_DET_INC_LOCL :=
_DET_INC_HEAD :=