# Automake snippet for embedding Whippet in an autotools project.
#
# The including Makefile.am needs to do this, assuming Whippet is in the
# whippet/ subdirectory:
#  
#     noinst_LTLIBRARIES =
#     WHIPPET_EMBEDDER_H = $(srcdir)/src/my-embedder.h
#     include whippet/embed.am
#
# my-embedder.h should provide the various hooks that Whippet needs to
# specialize itself to the embedder's object representation.
#
# The result is a libwhippet.la.  To compile and link against it:
#
#     AM_CPPFLAGS = $(WHIPPET_CPPFLAGS)
#     LDADD = libwhippet.la
#
# The assumption is that the embedder will build a single copy of
# Whippet, specialized against a single collector, a single set of
# embedder hooks, and a single target platform.  The collector and
# platform should be chosen at configure-time.  Because Automake really
# wants the set of source files to be visible to it at automake-time, we
# need to implement these conditions via AM_CONDITIONAL in a
# configure.ac.  For example for a parallel-mmc configuration on
# gnu-linux, we would need:
#
#     AM_SUBST(WHIPPET_COLLECTOR, parallel-mmc)
#     AM_CONDITIONAL(WHIPPET_COLLECTOR_SEMI, 0)
#     AM_CONDITIONAL(WHIPPET_COLLECTOR_PCC, 0)
#     AM_CONDITIONAL(WHIPPET_COLLECTOR_BDW, 0)
#     AM_CONDITIONAL(WHIPPET_COLLECTOR_MMC, 1)
#     AM_CONDITIONAL(WHIPPET_PLATFORM_GNU_LINUX, 1)
#
# Then there are other conditionals for compilation options:
#
#     AM_CONDITIONAL(WHIPPET_ENABLE_DEBUG, 0)
#     AM_CONDITIONAL(WHIPPET_USE_LTTNG, 1)
#
# Finally, LTO should be enabled, for best performance.  This should be
# added to CFLAGS at configure-time.
#
# Getting all of this in there is gnarly.  See the example configure.ac
# for one take on the topic.

noinst_LTLIBRARIES += libwhippet.la

libwhippet_la_SOURCES = \
  %D%/api/bdw-attrs.h \
  %D%/api/gc-allocation-kind.h \
  %D%/api/gc-api.h \
  %D%/api/gc-assert.h \
  %D%/api/gc-attrs.h \
  %D%/api/gc-basic-stats.h \
  %D%/api/gc-collection-kind.h \
  %D%/api/gc-config.h \
  %D%/api/gc-conservative-ref.h \
  %D%/api/gc-edge.h \
  %D%/api/gc-embedder-api.h \
  %D%/api/gc-ephemeron.h \
  %D%/api/gc-event-listener-chain.h \
  %D%/api/gc-event-listener.h \
  %D%/api/gc-finalizer.h \
  %D%/api/gc-forwarding.h \
  %D%/api/gc-histogram.h \
  %D%/api/gc-inline.h \
  %D%/api/gc-lttng.h \
  %D%/api/gc-null-event-listener.h \
  %D%/api/gc-options.h \
  %D%/api/gc-ref.h \
  %D%/api/gc-stack-addr.h \
  %D%/api/gc-tracepoint.h \
  %D%/api/gc-visibility.h \
  %D%/api/mmc-attrs.h \
  %D%/api/pcc-attrs.h \
  %D%/api/semi-attrs.h \
  %D%/src/adaptive-heap-sizer.h \
  %D%/src/address-hash.h \
  %D%/src/address-map.h \
  %D%/src/address-set.h \
  %D%/src/assert.h \
  %D%/src/background-thread.h \
  %D%/src/copy-space.h \
  %D%/src/debug.h \
  %D%/src/embedder-api-impl.h \
  %D%/src/extents.h \
  %D%/src/field-set.h \
  %D%/src/freelist.h \
  %D%/src/gc-align.h \
  %D%/src/gc-ephemeron-internal.h \
  %D%/src/gc-ephemeron.c \
  %D%/src/gc-finalizer-internal.h \
  %D%/src/gc-finalizer.c \
  %D%/src/gc-internal.h \
  %D%/src/gc-lock.h \
  %D%/src/gc-options-internal.h \
  %D%/src/gc-options.c \
  %D%/src/gc-platform.h \
  %D%/src/gc-stack.c \
  %D%/src/gc-stack.h \
  %D%/src/gc-trace.h \
  %D%/src/gc-tracepoint.c \
  %D%/src/growable-heap-sizer.h \
  %D%/src/heap-sizer.h \
  %D%/src/large-object-space.h \
  %D%/src/local-worklist.h \
  %D%/src/nofl-space.h \
  %D%/src/parallel-tracer.h \
  %D%/src/root-worklist.h \
  %D%/src/root.h \
  %D%/src/serial-tracer.h \
  %D%/src/shared-worklist.h \
  %D%/src/simple-worklist.h \
  %D%/src/spin.h \
  %D%/src/splay-tree.h \
  %D%/src/swar.h \
  %D%/src/tracer.h

if WHIPPET_PLATFORM_GNU_LINUX
libwhippet_la_SOURCES += %D%/src/gc-platform-gnu-linux.c
endif

WHIPPET_CPPFLAGS_bdw = -DGC_CONSERVATIVE_ROOTS=1 -DGC_CONSERVATIVE_TRACE=1
WHIPPET_CPPFLAGS_semi = -DGC_PRECISE_ROOTS=1
WHIPPET_CPPFLAGS_pcc = -DGC_PRECISE_ROOTS=1 -DGC_PARALLEL=1
WHIPPET_CPPFLAGS_generational_pcc = $(WHIPPET_CPPFLAGS_pcc) -DGC_GENERATIONAL=1
WHIPPET_CPPFLAGS_mmc = \
  -DGC_PRECISE_ROOTS=1
WHIPPET_CPPFLAGS_generational_mmc = \
  -DGC_PRECISE_ROOTS=1 -DGC_GENERATIONAL=1
WHIPPET_CPPFLAGS_parallel_mmc = \
  -DGC_PRECISE_ROOTS=1 -DGC_PARALLEL=1
WHIPPET_CPPFLAGS_parallel_generational_mmc = \
  -DGC_PRECISE_ROOTS=1 -DGC_GENERATIONAL=1 -DGC_PARALLEL=1
WHIPPET_CPPFLAGS_stack_conservative_mmc = \
  -DGC_CONSERVATIVE_ROOTS=1
WHIPPET_CPPFLAGS_stack_conservative_generational_mmc = \
  -DGC_CONSERVATIVE_ROOTS=1 -DGC_GENERATIONAL=1
WHIPPET_CPPFLAGS_stack_conservative_parallel_mmc = \
  -DGC_CONSERVATIVE_ROOTS=1 -DGC_PARALLEL=1
WHIPPET_CPPFLAGS_stack_conservative_parallel_generational_mmc = \
  -DGC_CONSERVATIVE_ROOTS=1 -DGC_GENERATIONAL=1 -DGC_PARALLEL=1
WHIPPET_CPPFLAGS_heap_conservative_mmc = \
  -DGC_CONSERVATIVE_ROOTS=1 -DGC_CONSERVATIVE_TRACE=1
WHIPPET_CPPFLAGS_heap_conservative_generational_mmc = \
  -DGC_CONSERVATIVE_ROOTS=1 -DGC_CONSERVATIVE_TRACE=1 -DGC_GENERATIONAL=1
WHIPPET_CPPFLAGS_heap_conservative_parallel_mmc = \
  -DGC_CONSERVATIVE_ROOTS=1 -DGC_CONSERVATIVE_TRACE=1 -DGC_PARALLEL=1
WHIPPET_CPPFLAGS_heap_conservative_parallel_generational_mmc = \
  -DGC_CONSERVATIVE_ROOTS=1 -DGC_CONSERVATIVE_TRACE=1 -DGC_GENERATIONAL=1 -DGC_PARALLEL=1

WHIPPET_CPPFLAGS    = $(WHIPPET_CPPFLAGS_$(subst -,_,$(WHIPPET_COLLECTOR)))
WHIPPET_CPPFLAGS    += -I$(srcdir)/%D%/api
WHIPPET_IMPL_CFLAGS = -fno-strict-aliasing
WHIPPET_LIBS        = -lm

if WHIPPET_ENABLE_DEBUG
WHIPPET_CPPFLAGS += -DGC_DEBUG=1
endif

if WHIPPET_COLLECTOR_SEMI
libwhippet_la_SOURCES += %D%/src/semi.c
WHIPPET_CPPFLAGS      += -DGC_ATTRS=\"$(srcdir)/%D%/api/semi-attrs.h\"
endif

if WHIPPET_COLLECTOR_PCC
libwhippet_la_SOURCES += %D%/src/pcc.c
WHIPPET_CPPFLAGS       += -DGC_ATTRS=\"$(srcdir)/%D%/api/pcc-attrs.h\"
endif

if WHIPPET_COLLECTOR_BDW
libwhippet_la_SOURCES += %D%/src/bdw.c
WHIPPET_IMPL_CFLAGS   += $(WHIPPET_BDW_CFLAGS)
WHIPPET_LIBS          += $(WHIPPET_BDW_LIBS)
WHIPPET_CPPFLAGS      += -DGC_ATTRS=\"$(srcdir)/%D%/api/bdw-attrs.h\"
endif

if WHIPPET_COLLECTOR_MMC
libwhippet_la_SOURCES += %D%/src/mmc.c
WHIPPET_CPPFLAGS      += -DGC_ATTRS=\"$(srcdir)/%D%/api/mmc-attrs.h\"
endif

# add to cflags: -flto -fvisibility=hidden -fno-strict-aliasing

libwhippet_la_CPPFLAGS = $(WHIPPET_CPPFLAGS)
libwhippet_la_CPPFLAGS += -DGC_EMBEDDER=\"../../$(WHIPPET_EMBEDDER_H)\"
libwhippet_la_CFLAGS = -Wall -Wno-unused $(CFLAGS) $(WHIPPET_IMPL_CFLAGS)
libwhippet_la_LDFLAGS = -lpthread $(LDFLAGS) $(WHIPPET_LIBS)

if !WHIPPET_ENABLE_DEBUG
libwhippet_la_CPPFLAGS += -DNDEBUG
endif

if WHIPPET_USE_LTTNG
libwhippet_la_CPPFLAGS += $(WHIPPET_LTTNG_CFLAGS) -DGC_TRACEPOINT_LTTNG=1
WHIPPET_LIBS += $(WHIPPET_LTTNG_LIBS)
endif