# 
# %CopyrightBegin%
#
# Copyright Ericsson AB 2001-2016. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# %CopyrightEnd%

include $(ERL_TOP)/make/target.mk

EBIN = ../../ebin
MEGACO_INCLUDEDIR = ../../include

include $(ERL_TOP)/make/$(TARGET)/otp.mk

# ----------------------------------------------------
# Application version
# ----------------------------------------------------
include ../../vsn.mk
VSN=$(MEGACO_VSN)

# ----------------------------------------------------
# The following variables differ on different systems, we set
# reasonable defaults, if something different is needed it should
# be set for that system only.
# ----------------------------------------------------

FLEX_VSN = $(shell flex --version)

TMP_CFLAGS  = @DED_BASIC_CFLAGS@ @OTP_EXTRA_FLAGS@
ifeq ($(TYPE),valgrind)
CFLAGS = $(subst -O2, , $(TMP_CFLAGS)) -DVALGRIND
else
CFLAGS = $(TMP_CFLAGS)
endif
CC      = @DED_CC@
CFLAGS_MT = $(CFLAGS) @DED_THR_DEFS@
LD      = @DED_LD@
LDFLAGS = @DED_LDFLAGS@
LEX     = @LEX@
LEXLIB  = @LEXLIB@
PERL    = @PERL@

# Shall we build the flex scanner or not.
# We assume that it does not exist on windows...
ifeq ($(ENABLE_MEGACO_FLEX_SCANNER),)
ifeq ($(findstring win32,$(TARGET)), win32)
ENABLE_MEGACO_FLEX_SCANNER = false
ENABLE_REENTRANT_MEGACO_FLEX_SCANNER = false
else
ENABLE_MEGACO_FLEX_SCANNER = @ENABLE_MEGACO_FLEX_SCANNER@
ENABLE_REENTRANT_MEGACO_FLEX_SCANNER = @ENABLE_REENTRANT_MEGACO_FLEX_SCANNER@
endif
endif
ERL_COMPILE_FLAGS += -DENABLE_MEGACO_FLEX_SCANNER=$(ENABLE_MEGACO_FLEX_SCANNER)

ifeq ($(ENABLE_REENTRANT_MEGACO_FLEX_SCANNER),true)
CFLAGS_MT += -DMEGACO_REENTRANT_FLEX_SCANNER
MT_LEX_FLAGS += -R
ERL_COMPILE_FLAGS += -DMEGACO_REENTRANT_FLEX_SCANNER=true
else
ERL_COMPILE_FLAGS += -DMEGACO_REENTRANT_FLEX_SCANNER=false
endif

# Shall the library be built with line-number checks or without
ifeq ($(ENABLE_MEGACO_FLEX_SCANNER_LINENO),)
# This is not really needed in this case (since we don't support
# this for windows), but just to ensure that the variable _has_ 
# a value...
ifeq ($(findstring win32,$(TARGET)), win32)
ENABLE_MEGACO_FLEX_SCANNER_LINENO = true
else
ENABLE_MEGACO_FLEX_SCANNER_LINENO = @ENABLE_MEGACO_FLEX_SCANNER_LINENO@
endif
endif

PRIVDIR = ../../priv
LIBDIR  = $(PRIVDIR)/lib/$(TARGET)
OBJDIR  = $(PRIVDIR)/obj/$(TARGET)

# ----------------------------------------------------
# Release directory specification
# ----------------------------------------------------
RELSYSDIR = $(RELEASE_PATH)/lib/megaco-$(VSN)


# ----------------------------------------------------
# Target Specs
# ----------------------------------------------------

include modules.mk

ERL_FILES = $(MODULES:%=%.erl)	

TARGET_FILES =  \
	$(MODULES:%=$(EBIN)/%.$(EMULATOR))

FLEX_SRC   = $(FLEX_MODULES:%=%.flex.src)
FLEX_FILES = $(STD_DRV).flex $(MT_DRV).flex

C_TARGETS  = $(STD_DRV).c $(MT_DRV).c


# ----------------------------------------------------
# Misc Macros
# ----------------------------------------------------

STD_DRV_NAME=-DMEGACO_DRV_NAME=\"$(STD_DRV)\"
MT_DRV_NAME=-DMEGACO_DRV_NAME=\"$(MT_DRV)\"

ifeq ($(findstring win32,$(TARGET)), win32)
FLEX_SCANNER_SO = 
SOLIBS = $(FLEX_SCANNER_SO)
else
FLEX_SCANNER_SO = $(LIBDIR)/$(STD_DRV).@DED_EXT@ 
FLEX_SCANNER_MT_SO = $(LIBDIR)/$(MT_DRV).@DED_EXT@ 
SOLIBS = $(FLEX_SCANNER_SO) $(FLEX_SCANNER_MT_SO) 
endif


# ----------------------------------------------------
# FLAGS
# ----------------------------------------------------
ifeq ($(TYPE),debug)
ERL_COMPILE_FLAGS += -Ddebug
endif

include ../app/megaco.mk

ERL_COMPILE_FLAGS += \
	$(MEGACO_ERL_COMPILE_FLAGS) \
	-I../../include

ifeq ($(MFS_DEBUG),true)
CFLAGS += -DMFS_DEBUG=true
endif

ifeq ($(MFS_FLEX_PERF),true)
STD_LEX_FLAGS += -p
MT_LEX_FLAGS += -p
endif

ifeq ($(MFS_FLEX_DEBUG),true)
CFLAGS += -DMFS_FLEX_DEBUG=1
STD_LEX_FLAGS += -d
MT_LEX_FLAGS += -d
else
CFLAGS += -DMFS_FLEX_DEBUG=0
endif

CFLAGS += @DED_INCLUDE@ -I$(ERL_TOP)/erts/$(TARGET) $(DRV_FLAGS) -funroll-loops -Wall

#ifneq ($(FLEX_VSN),)
#CFLAGS += -DFLEX_VERSION="$(FLEX_VSN)"
#else
#CFLAGS += -DFLEX_VERSION=unknown
#endif

ifeq ($(ENABLE_MEGACO_FLEX_SCANNER_LINENO),true)
CFLAGS += -DMEGACO_LINENO
STD_LEX_FLAGS += -Ca
MT_LEX_FLAGS += -Ca
ifeq ($(ENABLE_REENTRANT_MEGACO_FLEX_SCANNER),true)
MT_LEX_FLAGS += --yylineno
endif
else
CFLAGS += -DMEGACO_TOKENCNT
STD_LEX_FLAGS += -Cfe
MT_LEX_FLAGS += -Cfe
endif



# ----------------------------------------------------
# Targets
# ----------------------------------------------------

ifeq ($(ENABLE_MEGACO_FLEX_SCANNER),true)
debug opt: $(TARGET_FILES) $(C_TARGETS) solibs
else
debug opt: $(TARGET_FILES) 
endif

clean:
	rm -f $(TARGET_FILES) 
	rm -f $(FLEX_FILES) 
	rm -f $(C_TARGETS) 
	rm -f $(SOLIBS) 
	rm -f errs core *~

docs:

info:
	@echo "ENABLE_MEGACO_FLEX_SCANNER           = $(ENABLE_MEGACO_FLEX_SCANNER)"
	@echo "ENABLE_MEGACO_FLEX_SCANNER_LINENO    = $(ENABLE_MEGACO_FLEX_SCANNER_LINENO)"
	@echo "ENABLE_REENTRANT_MEGACO_FLEX_SCANNER = $(ENABLE_REENTRANT_MEGACO_FLEX_SCANNER)"
	@echo ""
	@echo "FLEX_VSN     = $(FLEX_VSN)"
	@echo ""
	@echo "CFLAGS       = $(CFLAGS)"
	@echo "CFLAGS_MT    = $(CFLAGS_MT)"
	@echo "DRV_FLAGS    = $(DRV_FLAGS)"
	@echo "STD_LEX_FLAGS = $(STD_LEX_FLAGS)"
	@echo "MT_LEX_FLAGS  = $(MT_LEX_FLAGS)"
	@echo ""
	@echo "MODULES      = $(MODULES)"
	@echo "ERL_FILES    = $(ERL_FILES)"
	@echo "TARGET_FILES = $(TARGET_FILES)"
	@echo ""
	@echo "FLEX_MODULES = $(FLEX_MODULES)"
	@echo "FLEX_SRC     = $(FLEX_SRC)"
	@echo "FLEX_FILES   = $(FLEX_FILES)"
	@echo ""
	@echo "C_TARGETS    = $(C_TARGETS)"
	@echo ""
	@echo "LIBDIR       = $(LIBDIR)"
	@echo "LEXLIB       = $(LEXLIB)"
	@echo ""
	@echo "STD_DRV      = $(STD_DRV)"
	@echo "MT_DRV       = $(MT_DRV)"
	@echo ""
	@echo "STD_DRV_NAME = $(STD_DRV_NAME)"
	@echo "MT_DRV_NAME  = $(MT_DRV_NAME)"
	@echo ""
	@echo "SOLIBS       = $(SOLIBS)"


# ----------------------------------------------------
# Release Target
# ---------------------------------------------------- 
include $(ERL_TOP)/make/otp_release_targets.mk


release_spec: opt
	$(INSTALL_DIR)  "$(RELSYSDIR)/ebin"
	$(INSTALL_DIR)  "$(RELSYSDIR)/src"
	$(INSTALL_DIR)  "$(RELSYSDIR)/src/flex"
	$(INSTALL_DIR)  "$(RELSYSDIR)/priv/lib"
	$(INSTALL_DIR)  "$(RELSYSDIR)/include"
	$(INSTALL_DATA) $(ERL_FILES) $(INTERNAL_HRL_FILES) "$(RELSYSDIR)/src/flex"
	$(INSTALL_DATA) $(TARGET_FILES) "$(RELSYSDIR)/ebin"
ifeq ($(ENABLE_MEGACO_FLEX_SCANNER),true)
	$(INSTALL_DATA) $(FLEX_FILES) $(C_TARGETS) "$(RELSYSDIR)/src/flex"
	$(INSTALL_PROGRAM) $(SOLIBS) "$(RELSYSDIR)/priv/lib"
endif


release_docs_spec:

# megaco_flex_scanner_drv.flex: megaco_flex_scanner_drv.flex.src
# ifeq ($(ENABLE_MEGACO_FLEX_SCANNER_LINENO),true)
# ifeq ($(ENABLE_REENTRANT_MEGACO_FLEX_SCANNER),true)
# 	@printf "\treentrant [flex] scanner lineno enabled\n"
# 	$(PERL) -p -e \
#           's/%FLEX_VERSION%/$(FLEX_VSN)/ ;  \
#            s/%MEGACO_YY_LINENO_OPTION%/%option yylineno/ ;  \
#            s/%MEGACO_YY_REENTRANT_OPTION%/%option reentrant/ ;  \
#            s/%MEGACO_DUMMY_DECL_YY_LINENO%/\/* static int yylineno = 1; *\//' \
#            < $< > $@
# else
# 	@printf "\tnon-reentrant [flex] scanner lineno enabled\n"
# 	$(PERL) -p -e \
#           's/%FLEX_VERSION%/$(FLEX_VSN)/ ;  \
#            s/%MEGACO_YY_LINENO_OPTION%/%option yylineno/ ;  \
#            s/%MEGACO_YY_REENTRANT_OPTION%/\/\* %option reentrant \*\// ; \
#            s/%MEGACO_DUMMY_DECL_YY_LINENO%/\/* static int yylineno = 1; *\//' \
#            < $< > $@
# endif
# else
# ifeq ($(ENABLE_REENTRANT_MEGACO_FLEX_SCANNER),true)
# 	@printf "\treentrant [flex] scanner lineno disabled\n"
# 	$(PERL) -p -e \
#           's/%FLEX_VERSION%/$(FLEX_VSN)/ ;  \
#            s/%MEGACO_YY_LINENO_OPTION%/\/\* %option yylineno \*\// ; \
#            s/%MEGACO_YY_REENTRANT_OPTION%/%option reentrant/ ;  \
#            s/%MEGACO_DUMMY_DECL_YY_LINENO%/\/* static int yylineno = 1; - REENTRANT SCANNER*\//' \
#            < $< > $@
# else
# 	@printf "\tnon-reentrant [flex] scanner lineno disabled\n"
# 	$(PERL) -p -e \
#           's/%FLEX_VERSION%/$(FLEX_VSN)/ ;  \
#            s/%MEGACO_YY_LINENO_OPTION%/\/\* %option yylineno \*\// ; \
#            s/%MEGACO_YY_REENTRANT_OPTION%/\/\* %option reentrant \*\// ; \
#            s/%MEGACO_DUMMY_DECL_YY_LINENO%/static int yylineno = 1;/' \
#            < $< > $@
# endif
# endif
# 

$(STD_DRV).flex: megaco_flex_scanner_drv.flex.src
ifeq ($(ENABLE_MEGACO_FLEX_SCANNER_LINENO),true)
	$(V_colon)@printf "std [flex] scanner - lineno enabled\n"
	$(gen_verbose)$(PERL) -p -e \
          's/%FLEX_VERSION%/$(FLEX_VSN)/ ;  \
           s/%MEGACO_YY_LINENO_OPTION%/%option yylineno/ ;  \
           s/%MEGACO_YY_REENTRANT_OPTION%/\/\* %option reentrant \*\// ; \
           s/%MEGACO_DUMMY_DECL_YY_LINENO%/\/* static int yylineno = 1; *\//' \
           < $< > $@
else
	$(V_colon)@printf "std [flex] scanner - lineno disabled\n"
	$(gen_verbose)$(PERL) -p -e \
          's/%FLEX_VERSION%/$(FLEX_VSN)/ ;  \
           s/%MEGACO_YY_LINENO_OPTION%/\/\* %option yylineno \*\// ; \
           s/%MEGACO_YY_REENTRANT_OPTION%/\/\* %option reentrant \*\// ; \
           s/%MEGACO_DUMMY_DECL_YY_LINENO%/static int yylineno = 1;/' \
           < $< > $@
endif

$(MT_DRV).flex: megaco_flex_scanner_drv.flex.src
ifeq ($(ENABLE_MEGACO_FLEX_SCANNER_LINENO),true)
ifeq ($(ENABLE_REENTRANT_MEGACO_FLEX_SCANNER),true)
	$(V_colon)@printf "multi-threaded reentrant [flex] scanner - lineno enabled\n"
	$(gen_verbose)$(PERL) -p -e \
          's/%FLEX_VERSION%/$(FLEX_VSN)/ ;  \
           s/%MEGACO_YY_LINENO_OPTION%/%option yylineno/ ;  \
           s/%MEGACO_YY_REENTRANT_OPTION%/%option reentrant/ ;  \
           s/%MEGACO_DUMMY_DECL_YY_LINENO%/\/* static int yylineno = 1; *\//' \
           < $< > $@
else
	$(V_colon)@printf "multi-threaded non-reentrant [flex] scanner - lineno enabled\n"
	$(gen_verbose)$(PERL) -p -e \
          's/%FLEX_VERSION%/$(FLEX_VSN)/ ;  \
           s/%MEGACO_YY_LINENO_OPTION%/%option yylineno/ ;  \
           s/%MEGACO_YY_REENTRANT_OPTION%/\/\* %option reentrant \*\// ; \
           s/%MEGACO_DUMMY_DECL_YY_LINENO%/\/* static int yylineno = 1; *\//' \
           < $< > $@
endif
else
ifeq ($(ENABLE_REENTRANT_MEGACO_FLEX_SCANNER),true)
	$(V_colon)@printf "multi-threaded reentrant [flex] scanner - lineno disabled\n"
	$(gen_verbose)$(PERL) -p -e \
          's/%FLEX_VERSION%/$(FLEX_VSN)/ ;  \
           s/%MEGACO_YY_LINENO_OPTION%/\/\* %option yylineno \*\// ; \
           s/%MEGACO_YY_REENTRANT_OPTION%/%option reentrant/ ;  \
           s/%MEGACO_DUMMY_DECL_YY_LINENO%/\/* static int yylineno = 1; - REENTRANT SCANNER*\//' \
           < $< > $@
else
	$(V_colon)@printf "multi-threaded non-reentrant [flex] scanner - lineno disabled\n"
	$(gen_verbose)$(PERL) -p -e \
          's/%FLEX_VERSION%/$(FLEX_VSN)/ ;  \
           s/%MEGACO_YY_LINENO_OPTION%/\/\* %option yylineno \*\// ; \
           s/%MEGACO_YY_REENTRANT_OPTION%/\/\* %option reentrant \*\// ; \
           s/%MEGACO_DUMMY_DECL_YY_LINENO%/static int yylineno = 1;/' \
           < $< > $@
endif
endif

# megaco_flex_scanner_drv.c: megaco_flex_scanner_drv.flex
# 	$(V_LEX) $(LEX_FLAGS) -P$* -o$@ $<
$(STD_DRV).c: $(STD_DRV).flex
	$(V_LEX) $(STD_LEX_FLAGS) -P$* -o$@ $<
$(MT_DRV).c: $(MT_DRV).flex
	$(V_LEX) $(MT_LEX_FLAGS) -P$* -o$@ $<

_create_dirs := $(shell mkdir -p $(OBJDIR) $(LIBDIR))

solibs: $(SOLIBS) 

$(OBJDIR)/$(STD_DRV).o: $(STD_DRV).c 
	$(V_colon)@echo "compiling std driver:"
	$(V_CC) -c $(STD_DRV_NAME) $(CFLAGS) -o $@ $<

$(OBJDIR)/$(MT_DRV).o: $(MT_DRV).c 
	$(V_colon)@echo "compiling multi-threaded driver:"
	$(V_CC) -c $(MT_DRV_NAME) $(CFLAGS_MT) -o $@ $<


# No need to link with -lfl as we have also defined %option noyywrap - 
# and having -lfl doesn't work under Darwin for some reason. - Sean
$(LIBDIR)/$(STD_DRV).@DED_EXT@: $(OBJDIR)/$(STD_DRV).o
	$(V_colon)@echo "linking std driver:"
	$(V_LD) $(LDFLAGS) -o $@ $<

$(LIBDIR)/$(MT_DRV).@DED_EXT@: $(OBJDIR)/$(MT_DRV).o
	$(V_colon)@echo "linking multi-threaded driver:"
	$(V_LD) $(LDFLAGS) -o $@ $<