#
# GNU Makefile for nghttp2 / MSVC.
#
# By G. Vanem <gvanem@yahoo.no> 2013
# The MIT License apply.
#

#
# Choose your weapons:
#  Set 'ZLIB_ROOT' to the root of zlib.
#  Set 'USE_CYTHON=1' to build and install the 'nghttp2.pyd' Python extension.
#
ZLIB_ROOT  = g:/MingW32/src/Compression/zlib-1.2.8
USE_CYTHON = 1

_VERSION   := $(shell grep AC_INIT ../configure.ac | cut -d'[' -f3 | sed -e 's/-DEV], //g')
_VERSION   := $(subst ., ,$(_VERSION))
VER_MAJOR   = $(word 1,$(_VERSION))
VER_MINOR   = $(word 2,$(_VERSION))
VER_MICRO   = $(word 3,$(_VERSION))
VERSION     = $(VER_MAJOR).$(VER_MINOR).$(VER_MICRO)
VERSION_NUM = ($(VER_MAJOR) << 16) + ($(VER_MINOR) << 8) + $(VER_MICRO)

GENERATED   = 'Generated by $(realpath Makefile.MSVC)'

#
# Where to copy nghttp2.dll + lib + headers to.
# Note: 'make install' is not in default targets. Do it explicitly.
#
VC_ROOT     = $(realpath $(VCINSTALLDIR))
INSTALL_BIN = $(VC_ROOT)/bin
INSTALL_LIB = $(VC_ROOT)/lib
INSTALL_HDR = $(VC_ROOT)/include

#
# Build for DEBUG-model and RELEASE at the same time.
#
TARGETS = nghttp2.lib  nghttp2.dll  nghttp2_imp.lib \
          nghttp2d.lib nghttp2d.dll nghttp2d_imp.lib

EXT_LIBS = $(ZLIB_ROOT)/zlib.lib ws2_32.lib

OBJ_DIR = MSVC_obj

NGHTTP2_PDB_R = $(OBJ_DIR)/nghttp2.pdb
NGHTTP2_PDB_D = $(OBJ_DIR)/nghttp2d.pdb

CC       = cl
CFLAGS   = -I./includes -I$(ZLIB_ROOT) -DHAVE_WINSOCK2_H -Dssize_t=long

CFLAGS_R = -nologo -MD  -W3 -Zi -Fd./$(NGHTTP2_PDB_R)
CFLAGS_D = -nologo -MDd -W3 -Zi -Fd./$(NGHTTP2_PDB_D) \
           -Ot -D_DEBUG -GF -RTCs -RTCu # -RTCc -GS

LDFLAGS = -nologo -machine:i386 -map -debug -incremental:no # -verbose

NGHTTP2_SRC = nghttp2_buf.c             \
              nghttp2_callbacks.c       \
              nghttp2_frame.c           \
              nghttp2_helper.c          \
              nghttp2_hd.c              \
              nghttp2_hd_huffman.c      \
              nghttp2_hd_huffman_data.c \
              nghttp2_map.c             \
              nghttp2_npn.c             \
              nghttp2_option.c          \
              nghttp2_outbound_item.c   \
              nghttp2_priority_spec.c   \
              nghttp2_pq.c              \
              nghttp2_queue.c           \
              nghttp2_session.c         \
              nghttp2_stream.c          \
              nghttp2_submit.c          \
              nghttp2_version.c

NGHTTP2_OBJ_R = $(addprefix $(OBJ_DIR)/r_, $(notdir $(NGHTTP2_SRC:.c=.obj)))
NGHTTP2_OBJ_D = $(addprefix $(OBJ_DIR)/d_, $(notdir $(NGHTTP2_SRC:.c=.obj)))

all: intro $(OBJ_DIR) $(TARGETS)
	@echo 'Welcome to NgHTTP2 (release + debug).'
	@echo 'Do a "make -f Makefile.MSVC install" at own risk!'

intro:
	@echo 'Building NgHTTP (MSVC) ver. "$(VERSION)".'

test_ver:
	@echo '$$(VERSION):   "$(VERSION)".'
	@echo '$$(_VERSION):  "$(_VERSION)".'
	@echo '$$(VER_MAJOR): "$(VER_MAJOR)".'
	@echo '$$(VER_MINOR): "$(VER_MINOR)".'
	@echo '$$(VER_MICRO): "$(VER_MICRO)".'

$(OBJ_DIR):
	- mkdir $(OBJ_DIR)

install: includes/nghttp2/nghttp2.h includes/nghttp2/nghttp2ver.h \
         nghttp2.dll  nghttp2.lib  nghttp2_imp.lib \
         nghttp2d.dll nghttp2d.lib nghttp2d_imp.lib \
         copy_headers_and_libs install_nghttp2_pyd_$(USE_CYTHON)

#
# This MUST be done before using the 'install_nghttp2_pyd_1' rule.
#
copy_headers_and_libs:
	- mkdir $(INSTALL_HDR)/nghttp2
	cp --update $(addprefix includes/nghttp2/, nghttp2.h nghttp2ver.h)     $(INSTALL_HDR)/nghttp2
	cp --update nghttp2.dll nghttp2d.dll $(NGHTTP2_PDB_R) $(NGHTTP2_PDB_D) $(INSTALL_BIN)
	cp --update nghttp2.lib nghttp2d.lib nghttp2_imp.lib nghttp2d_imp.lib  $(INSTALL_LIB)
	@echo

nghttp2.lib: $(NGHTTP2_OBJ_R)
	lib -nologo -out:$@ $^
	@echo

nghttp2d.lib: $(NGHTTP2_OBJ_D)
	lib -nologo -out:$@ $^
	@echo

nghttp2.dll nghttp2_imp.lib: $(NGHTTP2_OBJ_R) $(OBJ_DIR)/r_nghttp2.res $(OBJ_DIR)/r_nghttp2.def
	link $(LDFLAGS) -dll -out:nghttp2.dll -implib:nghttp2_imp.lib -def:$(OBJ_DIR)/r_nghttp2.def \
	     $(NGHTTP2_OBJ_R) $(OBJ_DIR)/r_nghttp2.res $(EXT_LIBS)
	@echo

nghttp2d.dll nghttp2d_imp.lib: $(NGHTTP2_OBJ_D) $(OBJ_DIR)/d_nghttp2.res $(OBJ_DIR)/d_nghttp2.def
	link $(LDFLAGS) -dll -out:nghttp2d.dll -implib:nghttp2d_imp.lib -def:$(OBJ_DIR)/d_nghttp2.def \
	     $(NGHTTP2_OBJ_D) $(OBJ_DIR)/d_nghttp2.res $(EXT_LIBS)
	@echo

install_nghttp2_pyd_0: ;

install_nghttp2_pyd_1: $(addprefix ../python/, setup.py.in nghttp2.pyx)
	cd ../python ; \
	echo '# $(GENERATED). DO NOT EDIT.' > setup.py ; \
	sed -e 's/@top_srcdir@/../'   \
	    -e 's/@top_builddir@/../' \
	    -e 's/@PACKAGE_VERSION@/$(VERSION)/' setup.py.in >> setup.py ; \
	cython -v nghttp2.pyx ; \
	python setup.py install

clean_nghttp2_pyd_0: ;

clean_nghttp2_pyd_1:
	cd ../python ; \
	rm -f setup.py nghttp2.c ; \
	rm -fR build/*

$(OBJ_DIR)/r_%.obj: %.c
	$(CC) $(CFLAGS_R) $(CFLAGS) -Fo$@ -c $<
	@echo

$(OBJ_DIR)/d_%.obj: %.c
	$(CC) $(CFLAGS_D) $(CFLAGS) -Fo$@ -c $<
	@echo

$(OBJ_DIR)/r_nghttp2.res: nghttp2.rc
	rc -nologo -D_RELEASE -Fo $@ $<
	@echo

$(OBJ_DIR)/d_nghttp2.res: nghttp2.rc
	rc -nologo -D_DEBUG -Fo $@ $<
	@echo

includes/nghttp2/nghttp2ver.h: includes/nghttp2/nghttp2ver.h.in
	sed < includes/nghttp2/nghttp2ver.h.in     \
	     -e 's/@PACKAGE_VERSION@/$(VERSION)/g' \
	     -e 's/@PACKAGE_VERSION_NUM@/($(VERSION_NUM))/g' > $@
	touch --reference=includes/nghttp2/nghttp2ver.h.in $@


define RES_FILE
  #include <winver.h>

  VS_VERSION_INFO VERSIONINFO
    FILEVERSION    $(VER_MAJOR), $(VER_MINOR), $(VER_MICRO), 0
    PRODUCTVERSION $(VER_MAJOR), $(VER_MINOR), $(VER_MICRO), 0
    FILEFLAGSMASK  0x3fL
    FILEOS         0x40004L
    FILETYPE       0x2L
    FILESUBTYPE    0x0L
  #ifdef _DEBUG
    #define        VER_STR  "$(VERSION).0 (MSVC debug)"
    #define        DBG      "d"
    FILEFLAGS      0x1L
  #else
    #define        VER_STR  "$(VERSION).0 (MSVC release)"
    #define        DBG      ""
    FILEFLAGS      0x0L
  #endif
  BEGIN
    BLOCK "StringFileInfo"
    BEGIN
      BLOCK "040904b0"
      BEGIN
        VALUE "CompanyName",      "http://tatsuhiro-t.github.io/nghttp2/"
        VALUE "FileDescription",  "nghttp2; HTTP/2 C library"
        VALUE "FileVersion",      VER_STR
        VALUE "InternalName",     "nghttp2" DBG
        VALUE "LegalCopyright",   "The MIT License"
        VALUE "LegalTrademarks",  ""
        VALUE "OriginalFilename", "nghttp2" DBG ".dll"
        VALUE "ProductName",      "NGHTTP2."
        VALUE "ProductVersion",   VER_STR
        VALUE "PrivateBuild",     "The privat build of <gvanem@yahoo.no>."
        VALUE "SpecialBuild",     ""
      END
    END
  BLOCK "VarFileInfo"
  BEGIN
    VALUE "Translation", 0x409, 1200
  END
  END
endef

export RES_FILE

nghttp2.rc: Makefile.MSVC
	@echo 'Generating $@...'
	@echo ' /* $(GENERATED). DO NOT EDIT.' > $@
	@echo '  */'                          >> $@
	@echo "$$RES_FILE"                    >> $@

$(OBJ_DIR)/r_nghttp2.def: Makefile.MSVC
	@echo 'Generating $@...'
	@echo '; $(GENERATED). DO NOT EDIT.' > $@
	@echo ';'                           >> $@
	@echo 'LIBRARY nghttp2.dll'         >> $@
	@echo 'EXPORTS'                     >> $@
	nm $(NGHTTP2_OBJ_R) | grep ' T .*_nghttp2' | sed 's/^.* _/  /' >> $@
	@echo 'NGHTTP2_STATIC_TABLE_LENGTH DATA' >> $@

$(OBJ_DIR)/d_nghttp2.def: Makefile.MSVC
	@echo 'Generating $@...'
	@echo '; $(GENERATED). DO NOT EDIT.' > $@
	@echo ';'                           >> $@
	@echo 'LIBRARY nghttp2d.dll'        >> $@
	@echo 'EXPORTS'                     >> $@
	nm $(NGHTTP2_OBJ_D) | grep ' T .*_nghttp2' | sed 's/^.* _/  /' >> $@
	@echo 'NGHTTP2_STATIC_TABLE_LENGTH DATA' >> $@

clean:
	rm -f $(OBJ_DIR)/* nghttp2_imp.exp nghttp2_imp.exp \
	      nghttp2.map nghttp2d.map nghttp2.rc includes/nghttp2/nghttp2ver.h
	@echo

vclean realclean: clean clean_nghttp2_pyd_$(USE_CYTHON)
	rm -f $(TARGETS) nghttp2.pdb nghttp2d.pdb nghttp2_imp.exp nghttp2d_imp.exp .depend.MSVC
	- rmdir $(OBJ_DIR)

#
# Use gcc to generated the dependencies. No MSVC specific args please!
#
REPLACE_R = 's/\(.*\)\.o: /\n$$(OBJ_DIR)\/r_\1.obj: /'
REPLACE_D = 's/\(.*\)\.o: /\n$$(OBJ_DIR)\/d_\1.obj: /'

depend: includes/nghttp2/nghttp2ver.h
	@echo '# $(GENERATED). DO NOT EDIT.' > .depend.MSVC
	gcc -MM $(CFLAGS) $(NGHTTP2_SRC)    >> .depend.tmp
	@echo '#'                           >> .depend.MSVC
	@echo '# Release lib objects:'      >> .depend.MSVC
	sed -e $(REPLACE_R) .depend.tmp     >> .depend.MSVC
	@echo '#'                           >> .depend.MSVC
	@echo '# Debug lib objects:'        >> .depend.MSVC
	sed -e $(REPLACE_D) .depend.tmp     >> .depend.MSVC
	rm -f .depend.tmp

-include .depend.MSVC