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# -*- mode: makefile-gmake -*-
##
## Netsurf library and feature macros
##
# A macro that conditionaly adds flags to the build when a feature is enabled.
#
# 1: Feature name (ie, NETSURF_USE_BMP -> BMP)
# 2: Parameters to add to CFLAGS
# 3: Parameters to add to LDFLAGS
# 4: Human-readable name for the feature
define feature_enabled
ifeq ($$(NETSURF_USE_$(1)),YES)
CFLAGS += $(2)
CXXFLAGS += $(2)
LDFLAGS += $(3)
ifneq ($(MAKECMDGOALS),clean)
$$(info M.CONFIG: $(4) enabled (NETSURF_USE_$(1) := YES))
endif
else ifeq ($$(NETSURF_USE_$(1)),NO)
ifneq ($(MAKECMDGOALS),clean)
$$(info M.CONFIG: $(4) disabled (NETSURF_USE_$(1) := NO))
endif
else
$$(info M.CONFIG: $(4) error (NETSURF_USE_$(1) := $$(NETSURF_USE_$(1))))
$$(error NETSURF_USE_$(1) must be YES or NO)
endif
endef
# A macro that conditionaly adds flags to the build with a uniform display.
#
# 1: Feature name (ie, NETSURF_USE_BMP -> BMP)
# 2: Human-readable name for the feature
# 3: Parameters to add to CFLAGS when enabled
# 4: Parameters to add to LDFLAGS when enabled
# 5: Parameters to add to CFLAGS when disabled
# 6: Parameters to add to LDFLAGS when disabled
define feature_switch
ifeq ($$(NETSURF_USE_$(1)),YES)
CFLAGS += $(3)
CXXFLAGS += $(3)
LDFLAGS += $(4)
ifneq ($(MAKECMDGOALS),clean)
$$(info M.CONFIG: $(2) enabled (NETSURF_USE_$(1) := YES))
endif
else ifeq ($$(NETSURF_USE_$(1)),NO)
CFLAGS += $(5)
CXXFLAGS += $(5)
LDFLAGS += $(6)
ifneq ($(MAKECMDGOALS),clean)
$$(info M.CONFIG: $(2) disabled (NETSURF_USE_$(1) := NO))
endif
else
$$(info M.CONFIG: $(4) error (NETSURF_USE_$(1) := $$(NETSURF_USE_$(1))))
$$(error NETSURF_USE_$(1) must be YES or NO)
endif
endef
# Extend flags with appropriate values from pkg-config for enabled features
#
# 1: pkg-config required modules for feature
# 2: Human-readable name for the feature
define pkg_config_find_and_add
ifeq ($$(PKG_CONFIG),)
$$(error pkg-config is required to auto-detect feature availability)
endif
PKG_CONFIG_$(1)_EXISTS := $$(shell $$(PKG_CONFIG) --exists $(1) && echo yes)
ifeq ($$(PKG_CONFIG_$(1)_EXISTS),yes)
CFLAGS += $$(shell $$(PKG_CONFIG) --cflags $(1))
CXXFLAGS += $$(shell $$(PKG_CONFIG) --cflags $(1))
LDFLAGS += $$(shell $$(PKG_CONFIG) --libs $(1))
ifneq ($(MAKECMDGOALS),clean)
$$(info PKG.CNFG: $(2) ($(1)) enabled)
endif
else
ifneq ($(MAKECMDGOALS),clean)
$$(info PKG.CNFG: $(2) ($(1)) failed)
$$(error Unable to find library for: $(2) ($(1)))
endif
endif
endef
# Extend flags with appropriate values from pkg-config for enabled features
#
# 1: Feature name (ie, NETSURF_USE_RSVG -> RSVG)
# 2: pkg-config required modules for feature
# 3: Human-readable name for the feature
define pkg_config_find_and_add_enabled
ifeq ($$(PKG_CONFIG),)
$$(error pkg-config is required to auto-detect feature availability)
endif
NETSURF_FEATURE_$(1)_AVAILABLE := $$(shell $$(PKG_CONFIG) --exists $(2) && echo yes)
NETSURF_FEATURE_$(1)_CFLAGS ?= -DWITH_$(1)
ifeq ($$(NETSURF_USE_$(1)),YES)
ifeq ($$(NETSURF_FEATURE_$(1)_AVAILABLE),yes)
CFLAGS += $$(shell $$(PKG_CONFIG) --cflags $(2)) $$(NETSURF_FEATURE_$(1)_CFLAGS)
CXXFLAGS += $$(shell $$(PKG_CONFIG) --cflags $(2)) $$(NETSURF_FEATURE_$(1)_CFLAGS)
LDFLAGS += $$(shell $$(PKG_CONFIG) --libs $(2)) $$(NETSURF_FEATURE_$(1)_LDFLAGS)
ifneq ($(MAKECMDGOALS),clean)
$$(info M.CONFIG: $(3) ($(2)) enabled (NETSURF_USE_$(1) := YES))
endif
else
ifneq ($(MAKECMDGOALS),clean)
$$(info M.CONFIG: $(3) ($(2)) failed (NETSURF_USE_$(1) := YES))
$$(error Unable to find library for: $(3) ($(2)))
endif
endif
else ifeq ($$(NETSURF_USE_$(1)),AUTO)
ifeq ($$(NETSURF_FEATURE_$(1)_AVAILABLE),yes)
CFLAGS += $$(shell $$(PKG_CONFIG) --cflags $(2)) $$(NETSURF_FEATURE_$(1)_CFLAGS)
CXXFLAGS += $$(shell $$(PKG_CONFIG) --cflags $(2)) $$(NETSURF_FEATURE_$(1)_CFLAGS)
LDFLAGS += $$(shell $$(PKG_CONFIG) --libs $(2)) $$(NETSURF_FEATURE_$(1)_LDFLAGS)
ifneq ($(MAKECMDGOALS),clean)
$$(info M.CONFIG: $(3) ($(2)) auto-enabled (NETSURF_USE_$(1) := AUTO))
NETSURF_USE_$(1) := YES
endif
else
ifneq ($(MAKECMDGOALS),clean)
$$(info M.CONFIG: $(3) ($(2)) auto-disabled (NETSURF_USE_$(1) := AUTO))
NETSURF_USE_$(1) := NO
endif
endif
else ifeq ($$(NETSURF_USE_$(1)),NO)
ifneq ($(MAKECMDGOALS),clean)
$$(info M.CONFIG: $(3) ($(2)) disabled (NETSURF_USE_$(1) := NO))
endif
else
ifneq ($(MAKECMDGOALS),clean)
$$(info M.CONFIG: $(3) ($(2)) error (NETSURF_USE_$(1) := $$(NETSURF_USE_$(1))))
$$(error NETSURF_USE_$(1) must be YES, NO, or AUTO)
endif
endif
endef
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