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########################################################################
#
# The build rules in this file are intended for use by GAP packages that
# want to build a simple GAP kernel extensions. They are based on the
# GAP build system, and require GNU make. To use this in your GAP
# package, `include` this file from your primary GNUmakefile. You must also
# set several variables beforehand:
#
# - GAPPATH must be set to the location of the GAP installation against
# which to build your package.
# - KEXT_NAME should be the name of your kernel extension (without
# file extensions like .so or .dll)
# - KEXT_SOURCES must contain a list of .c or .cc files to be linked
# into your kernel extension
# - optionally, you can set KEXT_CFLAGS, KEXT_CXXFLAGS, KEXT_LDFLAGS
# - if you are using autoconf to produce your configure script, set
# KEXT_USE_AUTOCONF to 1 to enable dependency rules that enable
# regenerating the configure script etc. when necessary
#
# The contents of this file are released into the public domain; hence
# you may edit this file as you wish, bundle and distribute it with your
# package, etc.
#
# If you bundle this file with your package, please try not to edit it,
# so that we can keep it identical across all GAP packages. Instead, if
# you find that you must edit it, please submit your changes back to
# the GAP team, so that a future version of this file can be adjusted
# to cover your usecase without modifications, thus ensuring you can
# always easily update to newer version of it.
#
########################################################################
# read GAP's build settings
include $(GAPPATH)/sysinfo.gap
# Remove quotation marks from some variable
GAC_LDFLAGS := $(subst $\",,$(GAC_LDFLAGS))
GAP_LDFLAGS := $(subst $\",,$(GAP_LDFLAGS))
GAP_CXX := $(subst $\",,$(GAP_CXX))
# hack to support GAP <= 4.9
ifndef GAP_KERNEL_MAJOR_VERSION
KEXT_CFLAGS += -I$(GAP_LIB_DIR)/src
KEXT_CXXFLAGS += -I$(GAP_LIB_DIR)/src
endif
# honor user supplied flags
KEXT_CFLAGS += $(CPPFLAGS)
KEXT_CFLAGS += $(CFLAGS)
KEXT_CXXFLAGS += $(CPPFLAGS)
KEXT_CXXFLAGS += $(CXXFLAGS)
KEXT_LDFLAGS += $(LDFLAGS)
# various derived settings
KEXT_BINARCHDIR = bin/$(GAParch)
KEXT_SO = $(KEXT_BINARCHDIR)/$(KEXT_NAME).so
# the following settings are provided by sysinfo.gap in GAP >= 4.12;
# for compatibility with older GAP version (at least 4.9, 4.10, 4.11)
# we try to "guess" suitable values here
GAP ?= $(GAPPATH)/gap
GAC ?= $(GAPPATH)/gac
GAP_OBJEXT ?= lo
# override KEXT_RECONF if your package needs a different invocation
# for reconfiguring (e.g. `./config.status --recheck` for autoconf)
ifdef KEXT_USE_AUTOCONF
KEXT_RECONF ?= ./config.status GNUmakefile
else
KEXT_RECONF ?= ./configure "$(GAPPATH)"
endif
# default target
all: $(KEXT_SO)
.PHONY: all
########################################################################
# Object files
# For each file FOO.c in SOURCES, add gen/FOO.$(GAP_OBJEXT) to KEXT_OBJS
# and similar for .cc files
########################################################################
KEXT_OBJS = $(patsubst %.s,gen/%.$(GAP_OBJEXT), \
$(patsubst %.cpp,gen/%.$(GAP_OBJEXT), \
$(patsubst %.c,gen/%.$(GAP_OBJEXT), \
$(KEXT_SOURCES))))
########################################################################
# Quiet rules.
#
# Replace regular output with quiet messages, unless V is set,
# e.g. "make V=1"
########################################################################
ifneq ($(findstring $(MAKEFLAGS),s),s)
ifndef V
QUIET_GAC = @echo " GAC $< => $@";>/dev/null # keep the trailing space!
endif
endif
########################################################################
# Rules for automatic header dependency tracking.
# This is based on the GAP build system.
########################################################################
# List of all (potential) dependency files, derived from KEXT_OBJS
KEXT_DEPFILES = $(patsubst %.$(GAP_OBJEXT),%.d,$(KEXT_OBJS))
# Include the dependency tracking files
-include $(KEXT_DEPFILES)
# Mark *.d files as PHONY. This stops make from trying to recreate them
# (which it can't), and in particular from looking for potential source
# files. This can save quite a bit of disk access time.
.PHONY: $(KEXT_DEPFILES)
# The following flags instruct the compiler to enable advanced
# dependency tracking. Supported by GCC 3 and newer; clang; Intel C
# compiler; and more.
KEXT_DEPFLAGS = -MQ "$@" -MMD -MP -MF $(@D)/$(*F).d
# build rule for C code
# The dependency on GNUmakefile ensures that re-running configure recompiles everything
gen/%.$(GAP_OBJEXT): %.c GNUmakefile
@mkdir -p $(@D)
$(QUIET_GAC)$(GAC) -d -p "$(KEXT_DEPFLAGS)" -p "$(KEXT_CFLAGS)" -c $< -o $@
# build rule for C++ code
# The dependency on GNUmakefile ensures that re-running configure recompiles everything
gen/%.$(GAP_OBJEXT): %.cpp GNUmakefile
@mkdir -p $(@D)
$(QUIET_GAC)$(GAC) -d -p "$(KEXT_DEPFLAGS)" -p "$(KEXT_CXXFLAGS)" -c $< -o $@
# build rule for assembler code
# The dependency on GNUmakefile ensures that re-running configure recompiles everything
gen/%.$(GAP_OBJEXT): %.s GNUmakefile
@mkdir -p $(@D)
$(QUIET_GAC)$(GAC) -d -p "$(KEXT_DEPFLAGS)" -p "$(KEXT_CFLAGS)" -c $< -o $@
# build rule for linking all object files together into a kernel extension
$(KEXT_SO): $(KEXT_OBJS)
@mkdir -p $(@D)
$(QUIET_GAC)$(GAP_CXX) -o $@ $(GAP_LDFLAGS) $(GAC_LDFLAGS) $(KEXT_OBJS) $(KEXT_LDFLAGS)
# hook into `make clean`
clean: clean-kext
clean-kext:
rm -rf $(KEXT_BINARCHDIR) gen
# hook into `make distclean`
distclean: distclean-kext
distclean-kext:
rm -rf bin gen GNUmakefile
rm -rf doc/_*.xml
rm -rf doc/*.aux doc/*.bbl doc/*.blg doc/*.brf doc/*.idx doc/*.idx
rm -rf doc/*.ilg doc/*.ind doc/*.log doc/*.out doc/*.pnr doc/*.toc
# hook into `make doc`
doc: doc-kext
doc-kext:
$(GAP) --quitonbreak -b -q < makedoc.g
# hook into `make check`
check: check-kext
check-kext:
$(GAP) tst/testall.g
# re-run configure if configure, GNUmakefile.in or GAP itself changed
GNUmakefile: configure GNUmakefile.in $(GAPPATH)/sysinfo.gap
$(KEXT_RECONF)
ifdef KEXT_USE_AUTOCONF
# react to modifications of the build system
configure_deps = configure.ac $(wildcard m4/*.m4)
ifneq ($(MAINTAINER_MODE),no)
configure: $(configure_deps)
@if command -v autoconf >/dev/null 2>&1 ; then \
echo "running autoconf" ; \
autoconf ; \
else \
echo "autoconf not available, proceeding with stale configure" ; \
fi
endif # MAINTAINER_MODE
# re-run configure if configure, GNUmakefile.in or GAP itself changed
config.status: configure $(GAPPATH)/sysinfo.gap
./config.status --recheck
# update GNUmakefile if config.status changed
GNUmakefile: config.status
gen/pkgconfig.h: gen/pkgconfig.h.stamp
@if test ! -f $@; then rm -f $<; else :; fi
@if test ! -f $@; then $(MAKE) $<; else :; fi
gen/pkgconfig.h.stamp: src/pkgconfig.h.in config.status
@rm -f $@
@mkdir -p $(@D)
./config.status gen/pkgconfig.h
echo > $@
ifneq ($(MAINTAINER_MODE),no)
src/pkgconfig.h.in: $(configure_deps)
@if command -v autoheader >/dev/null 2>&1 ; then \
mkdir -p $(@D) ; \
echo "running autoheader" ; \
autoheader ; \
rm -f gen/pkgconfig.h.stamp ; \
else \
echo "autoheader not available, proceeding with stale config.h" ; \
fi
touch $@
endif # MAINTAINER_MODE
endif # KEXT_USE_AUTOCONF
.PHONY: check clean distclean doc
.PHONY: check-kext clean-kext distclean-kext doc-kext
########################################################################
# GNUmakefile debugging trick:
# call print-VARIABLE to see the runtime value of any variable
########################################################################
print-%:
@echo '$*=$($*)'
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