# -----------------------------------------------------------------------------
#
# (c) 2009 The University of Glasgow
#
# This file is part of the GHC build system.
#
# To understand how the build system works and how to modify it, see
#      http://hackage.haskell.org/trac/ghc/wiki/Building/Architecture
#      http://hackage.haskell.org/trac/ghc/wiki/Building/Modifying
#
# -----------------------------------------------------------------------------

# -----------------------------------------------------------------------------
# Building the RTS

# We build the RTS with stage 1
rts_dist_HC = $(GHC_STAGE1)

# merge GhcLibWays and GhcRTSWays but strip out duplicates
rts_WAYS = $(GhcLibWays) $(filter-out $(GhcLibWays),$(GhcRTSWays))

ALL_RTS_LIBS = $(foreach way,$(rts_WAYS),rts/dist/build/libHSrts$($(way)_libsuf)) \
	       rts/dist/build/libHSrtsmain.a
all_rts : $(ALL_RTS_LIBS)

# The per-dir options
$(eval $(call distdir-opts,rts,dist))

# -----------------------------------------------------------------------------
# Defining the sources

ALL_DIRS = hooks parallel sm eventlog

ifeq "$(HOSTPLATFORM)" "i386-unknown-mingw32"
ALL_DIRS += win32
else
ALL_DIRS += posix
endif

EXCLUDED_SRCS += rts/Main.c
EXCLUDED_SRCS += rts/parallel/SysMan.c
EXCLUDED_SRCS += rts/dyn-wrapper.c
EXCLUDED_SRCS += $(wildcard rts/Vis*.c)

rts_C_SRCS = $(filter-out $(EXCLUDED_SRCS),$(wildcard rts/*.c $(foreach dir,$(ALL_DIRS),rts/$(dir)/*.c)))
rts_CMM_SRCS = $(wildcard rts/*.cmm)

# Don't compile .S files when bootstrapping a new arch
ifeq "$(TARGETPLATFORM)" "$(HOSTPLATFORM)"
ifneq "$(findstring $(TargetArch_CPP), powerpc powerpc64)" ""
rts_S_SRCS += rts/AdjustorAsm.S
else
ifneq "$(findstring $(TargetOS_CPP), darwin)" ""
rts_S_SRCS += rts/AdjustorAsm.S
endif
endif
endif

ifeq "$(GhcUnregisterised)" "YES"
GENAPPLY_OPTS = -u
endif

rts_AUTO_APPLY_CMM = rts/dist/build/AutoApply.cmm

$(rts_AUTO_APPLY_CMM): $(GENAPPLY_INPLACE)
	"$(GENAPPLY_INPLACE)" >$@

rts/dist/build/sm/Evac_thr.c : rts/sm/Evac.c
	"$(MKDIRHIER)" $(dir $@)
	cp $< $@
rts/dist/build/sm/Scav_thr.c : rts/sm/Scav.c
	"$(MKDIRHIER)" $(dir $@)
	cp $< $@

rts_H_FILES = $(wildcard includes/*.h) $(wildcard rts/*.h)

# collect the -l flags that we need to link the rts dyn lib.
rts/libs.depend : $(GHC_PKG_INPLACE)
	"$(GHC_PKG_INPLACE)" field rts extra-libraries \
	  | sed -e 's/^extra-libraries: //' -e 's/\([a-z]*\)/-l\1/g' > $@

#-----------------------------------------------------------------------------
# Building one way

define build-rts-way # args: $1 = way

# The per-way CC_OPTS
ifneq "$$(findstring debug, $1)" ""
rts_dist_$1_HC_OPTS =
rts_dist_$1_CC_OPTS = -g -O0
else
rts_dist_$1_HC_OPTS = $$(GhcRtsHcOpts)
rts_dist_$1_CC_OPTS = $$(GhcRtsCcOpts)
endif

ifneq "$$(findstring thr, $1)" ""
rts_$1_EXTRA_C_SRCS  =  rts/dist/build/sm/Evac_thr.c rts/dist/build/sm/Scav_thr.c
endif

$(call distdir-way-opts,rts,dist,$1)
$(call c-suffix-rules,rts,dist,$1,YES)
$(call cmm-suffix-rules,rts,dist,$1)

rts_$1_LIB = rts/dist/build/libHSrts$$($1_libsuf)

rts_$1_C_OBJS   = $$(patsubst rts/%.c,rts/dist/build/%.$$($1_osuf),$$(rts_C_SRCS)) $$(patsubst %.c,%.$$($1_osuf),$$(rts_$1_EXTRA_C_SRCS))
rts_$1_S_OBJS   = $$(patsubst rts/%.S,rts/dist/build/%.$$($1_osuf),$$(rts_S_SRCS))
rts_$1_CMM_OBJS = $$(patsubst rts/%.cmm,rts/dist/build/%.$$($1_osuf),$$(rts_CMM_SRCS)) $$(patsubst %.cmm,%.$$($1_osuf),$$(rts_AUTO_APPLY_CMM))

rts_$1_OBJS = $$(rts_$1_C_OBJS) $$(rts_$1_S_OBJS) $$(rts_$1_CMM_OBJS)

rts_dist_$1_CC_OPTS += -DRtsWay=$$(DQ)rts_$1$$(DQ)

ifneq "$$(findstring dyn, $1)" ""
$$(rts_$1_LIB) : $$(rts_$1_OBJS) rts/libs.depend
	"$$(RM)" $$(RM_OPTS) $$@
	"$$(rts_dist_HC)" -shared -dynamic -dynload deploy \
	  -no-auto-link-packages `cat rts/libs.depend` $$(rts_$1_OBJS) -o $$@
else
$$(rts_$1_LIB) : $$(rts_$1_OBJS)
	"$$(RM)" $$(RM_OPTS) $$@
	echo $$(rts_$1_OBJS) | $$(XARGS) $$(AR) $$(EXTRA_AR_ARGS) $$@
endif

endef

# And expand the above for each way:
$(foreach way,$(rts_WAYS),$(eval $(call build-rts-way,$(way))))

#-----------------------------------------------------------------------------
# Flags for compiling every file

# We like plenty of warnings.
WARNING_OPTS += -Wall -Wextra
WARNING_OPTS += -Wstrict-prototypes 
WARNING_OPTS += -Wmissing-prototypes 
WARNING_OPTS += -Wmissing-declarations
WARNING_OPTS += -Winline
WARNING_OPTS += -Waggregate-return
WARNING_OPTS += -Wpointer-arith
WARNING_OPTS += -Wmissing-noreturn
WARNING_OPTS += -Wcast-align
WARNING_OPTS += -Wnested-externs
WARNING_OPTS += -Wredundant-decls 

# These ones are hard to avoid:
#WARNING_OPTS += -Wconversion
#WARNING_OPTS += -Wbad-function-cast
#WARNING_OPTS += -Wshadow
#WARNING_OPTS += -Wcast-qual

STANDARD_OPTS += -Iincludes -Irts
# COMPILING_RTS is only used when building Win32 DLL support.
STANDARD_OPTS += -DCOMPILING_RTS

# HC_OPTS is included in both .c and .cmm compilations, whereas CC_OPTS is
# only included in .c compilations.  HC_OPTS included the WAY_* opts, which
# must be included in both types of compilations.

rts_CC_OPTS += $(WARNING_OPTS)
rts_CC_OPTS += $(STANDARD_OPTS)

rts_HC_OPTS += $(STANDARD_OPTS) -package-name rts

ifneq "$(GhcWithSMP)" "YES"
rts_CC_OPTS += -DNOSMP
rts_HC_OPTS += -optc-DNOSMP
endif

ifeq "$(UseLibFFIForAdjustors)" "YES"
rts_CC_OPTS += -DUSE_LIBFFI_FOR_ADJUSTORS
endif

ifeq "$(Windows)" "YES"
# SDM: when compiled with -fasm the RTS currently has bogus references to 
# __imp_base_ things, so working around for now:
rts_HC_OPTS += -fvia-C
endif

ifneq "$(DYNAMIC_RTS)" "YES"
rts_HC_OPTS += -static
else
$(error ToDo: DYNAMIC_RTS)
endif

# Mac OS X: make sure we compile for the right OS version
rts_CC_OPTS += $(MACOSX_DEPLOYMENT_CC_OPTS)
rts_HC_OPTS += $(addprefix -optc, $(MACOSX_DEPLOYMENT_CC_OPTS))
rts_LD_OPTS += $(addprefix -optl, $(MACOSX_DEPLOYMENT_LD_OPTS))

# Otherwise the stack-smash handler gets triggered.
ifeq "$(TargetOS_CPP)" "openbsd"
rts_HC_OPTS += -optc-fno-stack-protector
endif

# We *want* type-checking of hand-written cmm.
rts_HC_OPTS += -dcmm-lint 

# -fno-strict-aliasing is required for the runtime, because we often
# use a variety of types to represent closure pointers (StgPtr,
# StgClosure, StgMVar, etc.), and without -fno-strict-aliasing gcc is
# allowed to assume that these pointers do not alias.  eg. without
# this flag we get problems in sm/Evac.c:copy() with gcc 3.4.3, the
# upd_evacee() assigments get moved before the object copy.
rts_CC_OPTS += -fno-strict-aliasing

rts_CC_OPTS += -fno-common

ifeq "$(BeConservative)" "YES"
rts_CC_OPTS += -DBE_CONSERVATIVE
endif

#-----------------------------------------------------------------------------
# Flags for compiling specific files

# XXX DQ is now the same on all platforms, so get rid of it
DQ = \"

# If RtsMain.c is built with optimisation then the SEH exception stuff on
# Windows gets confused.
# This has to be in HC rather than CC opts, as otherwise there's a
# -optc-O2 that comes after it.
RtsMain_HC_OPTS += -optc-O0

RtsMessages_CC_OPTS += -DProjectVersion=$(DQ)$(ProjectVersion)$(DQ)
RtsUtils_CC_OPTS += -DProjectVersion=$(DQ)$(ProjectVersion)$(DQ)
#
RtsUtils_CC_OPTS += -DHostPlatform=$(DQ)$(HOSTPLATFORM)$(DQ)
RtsUtils_CC_OPTS += -DHostArch=$(DQ)$(HostArch_CPP)$(DQ)
RtsUtils_CC_OPTS += -DHostOS=$(DQ)$(HostOS_CPP)$(DQ)
RtsUtils_CC_OPTS += -DHostVendor=$(DQ)$(HostVendor_CPP)$(DQ)
#
RtsUtils_CC_OPTS += -DBuildPlatform=$(DQ)$(BUILDPLATFORM)$(DQ)
RtsUtils_CC_OPTS += -DBuildArch=$(DQ)$(BuildArch_CPP)$(DQ)
RtsUtils_CC_OPTS += -DBuildOS=$(DQ)$(BuildOS_CPP)$(DQ)
RtsUtils_CC_OPTS += -DBuildVendor=$(DQ)$(BuildVendor_CPP)$(DQ)
#
RtsUtils_CC_OPTS += -DTargetPlatform=$(DQ)$(TARGETPLATFORM)$(DQ)
RtsUtils_CC_OPTS += -DTargetArch=$(DQ)$(TargetArch_CPP)$(DQ)
RtsUtils_CC_OPTS += -DTargetOS=$(DQ)$(TargetOS_CPP)$(DQ)
RtsUtils_CC_OPTS += -DTargetVendor=$(DQ)$(TargetVendor_CPP)$(DQ)
#
RtsUtils_CC_OPTS += -DGhcUnregisterised=$(DQ)$(GhcUnregisterised)$(DQ)
RtsUtils_CC_OPTS += -DGhcEnableTablesNextToCode=$(DQ)$(GhcEnableTablesNextToCode)$(DQ)

# ffi.h triggers prototype warnings, so disable them here:
Interpreter_CC_OPTS += -Wno-strict-prototypes
Adjustor_CC_OPTS    += -Wno-strict-prototypes
sm/Storage_CC_OPTS  += -Wno-strict-prototypes

# inlining warnings happen in Compact
sm/Compact_CC_OPTS += -Wno-inline

RetainerProfile_CC_OPTS += -w
RetainerSet_CC_OPTS += -Wno-format
# On Windows:
win32/ConsoleHandler_CC_OPTS += -w
win32/ThrIOManager_CC_OPTS += -w
win32/Ticker_CC_OPTS += -w
# The above warning supression flags are a temporary kludge.
# While working on this module you are encouraged to remove it and fix
# any warnings in the module. See
#     http://hackage.haskell.org/trac/ghc/wiki/WorkingConventions#Warnings
# for details

# Without this, thread_obj will not be inlined (at least on x86 with GCC 4.1.0)
sm/Compact_CC_OPTS += -finline-limit=2500

# -O3 helps unroll some loops (especially in copy() with a constant argument).
sm/Evac_CC_OPTS += -funroll-loops
sm/Evac_thr_HC_OPTS += -optc-funroll-loops

# These files are just copies of sm/Evac.c and sm/Scav.c respectively,
# but compiled with -DPARALLEL_GC.
sm/Evac_thr_HC_OPTS += -optc-DPARALLEL_GC -Irts/sm
sm/Scav_thr_HC_OPTS += -optc-DPARALLEL_GC -Irts/sm

#-----------------------------------------------------------------------------
# Add PAPI library if needed

ifeq "$(GhcRtsWithPapi)" "YES"

rts_CC_OPTS		+= -DUSE_PAPI

rts_PACKAGE_CPP_OPTS	+= -DUSE_PAPI
rts_PACKAGE_CPP_OPTS    += -DPAPI_INCLUDE_DIR=$(PapiIncludeDir)
rts_PACKAGE_CPP_OPTS    += -DPAPI_LIB_DIR=$(PapiLibDir)

ifneq "$(PapiIncludeDir)" ""
rts_HC_OPTS     += -I$(PapiIncludeDir)
rts_CC_OPTS     += -I$(PapiIncludeDir)
rts_HSC2HS_OPTS += -I$(PapiIncludeDir)
endif
ifneq "$(PapiLibDirs)" ""
rts_LD_OPTS     += -L$(PapiLibDirs)
endif

else # GhcRtsWithPapi==YES

rts_PACKAGE_CPP_OPTS += -DPAPI_INCLUDE_DIR=""
rts_PACKAGE_CPP_OPTS += -DPAPI_LIB_DIR=""

endif

# -----------------------------------------------------------------------------
# dependencies

# Hack: we define every way-related option here, so that we get (hopefully)
# a superset of the dependencies.  To do this properly, we should generate
# a different set of dependencies for each way.  Further hack: PROFILING and
# TICKY_TICKY can't be used together, so we omit TICKY_TICKY for now.
rts_MKDEPENDC_OPTS += -DPROFILING -DTHREADED_RTS -DDEBUG

rts_WAYS_DASHED = $(subst $(space),,$(patsubst %,-%,$(strip $(rts_WAYS))))
rts_dist_depfile = rts/dist/build/.depend$(rts_WAYS_DASHED)

rts_dist_C_SRCS  = $(rts_C_SRCS)
rts_dist_S_SRCS =  $(rts_S_SRCS)
rts_dist_C_FILES = $(rts_C_SRCS) $(rts_S_SRCS)

$(eval $(call build-dependencies,rts,dist))

$(rts_dist_depfile) : libffi/ffi.h

#-----------------------------------------------------------------------------
# libffi stuff

rts_CC_OPTS     += -Ilibffi/build/include
rts_HC_OPTS     += -Ilibffi/build/include
rts_HSC2HS_OPTS += -Ilibffi/build/include
rts_LD_OPTS     += -Llibffi/build/include

# -----------------------------------------------------------------------------
# compile generic patchable dyn-wrapper

DYNWRAPPER_SRC = rts/dyn-wrapper.c
DYNWRAPPER_PROG = rts/dyn-wrapper$(exeext)
$(DYNWRAPPER_PROG): $(DYNWRAPPER_SRC)
	"$(HC)" -cpp -optc-include -optcdyn-wrapper-patchable-behaviour.h $(INPLACE_EXTRA_FLAGS) $< -o $@

# -----------------------------------------------------------------------------
# build the static lib containing the C main symbol

rts/dist/build/libHSrtsmain.a : rts/dist/build/Main.o
	$(AR) $(EXTRA_AR_ARGS) $@ $<

# -----------------------------------------------------------------------------
# The RTS package config

# If -DDEBUG is in effect, adjust package conf accordingly..
ifneq "$(strip $(filter -optc-DDEBUG,$(GhcRtsHcOpts)))" ""
rts_PACKAGE_CPP_OPTS += -DDEBUG
endif

ifeq "$(HaveLibMingwEx)" "YES"
rts_PACKAGE_CPP_OPTS += -DHAVE_LIBMINGWEX
endif

$(eval $(call manual-package-config,rts))

ifneq "$(BootingFromHc)" "YES"
rts/package.conf.inplace : $(includes_H_CONFIG) $(includes_H_PLATFORM)
endif

# -----------------------------------------------------------------------------
# installing

install : install_rts

.PHONY: install_rts
install_rts:
	$(INSTALL_DIR) $(DESTDIR)$(libdir)
	$(INSTALL_DIR) $(DESTDIR)$(libdir)/include
	"$(CP)" $(ALL_RTS_LIBS) $(DESTDIR)$(libdir)

# -----------------------------------------------------------------------------
# cleaning

$(eval $(call clean-target,rts,dist,rts/dist))

BINDIST_EXTRAS += rts/package.conf.in
BINDIST_EXTRAS += $(ALL_RTS_LIBS)