# -*- makefile-gmake -*-

########################################################################
# Detect the PLATFORM with uname.

ifndef PLATFORM
ifeq ($(shell uname),Darwin)
PLATFORM=macosx
else
ifeq ($(shell uname),FreeBSD)
PLATFORM=bsd
LIBCHIBI_FLAGS = -Wl,-soname,libchibi-scheme$(SO).$(SOVERSION_MAJOR)
else
ifeq ($(shell uname),NetBSD)
PLATFORM=bsd
else
ifeq ($(shell uname),OpenBSD)
PLATFORM=bsd
else
ifeq ($(shell uname),DragonFly)
PLATFORM=bsd
else
ifeq ($(shell uname -o),Msys)
PLATFORM=windows
SOLIBDIR = $(BINDIR)
DIFFOPTS = -b
else
ifeq ($(shell uname -o),Cygwin)
PLATFORM=cygwin
SOLIBDIR = $(BINDIR)
DIFFOPTS = -b
else
ifeq ($(shell uname -o),Android)
PLATFORM=android
else
ifeq ($(shell uname -o),GNU/Linux)
PLATFORM=linux
else
ifeq ($(shell uname),SunOS)
PLATFORM=solaris
else
PLATFORM=unix
endif
endif
endif
endif
endif
endif
endif
endif
endif
endif
endif

ifndef ARCH
ARCH = $(shell uname -m)
endif

########################################################################
# Set default variables for the platform.

LIBDL = -ldl
SO_VERSIONED_SUFFIX = $(SO).$(SOVERSION)
SO_MAJOR_VERSIONED_SUFFIX = $(SO).$(SOVERSION_MAJOR)
STATIC_LDFLAGS = -lm -ldl -lutil

ifeq ($(PLATFORM),macosx)
SO  = .dylib
SO_VERSIONED_SUFFIX = .$(SOVERSION)$(SO)
SO_MAJOR_VERSIONED_SUFFIX = .$(SOVERSION_MAJOR)$(SO)
EXE =
CLIBFLAGS =
CLINKFLAGS = -dynamiclib
STATICFLAGS = -DSEXP_USE_DL=0  # -static-libgcc
LIBCHIBI_FLAGS = -install_name $(DESTDIR)$(SOLIBDIR)/libchibi-scheme.$(SOVERSION).dylib
else
ifeq ($(PLATFORM),bsd)
SO  = .so
EXE =
CLIBFLAGS = -fPIC
CLINKFLAGS = -shared
LIBDL = 
RLDFLAGS=-Wl,-R$(LIBDIR)
else
ifeq ($(PLATFORM),solaris)
SO = .so
EXE =
CLIBFLAGS = -fPIC
CLINKFLAGS = -shared
LIBDL = -ldl
RLDFLAGS=-Wl,-R$(LIBDIR)
else
ifeq ($(PLATFORM),windows)
SO  = .dll
EXE = .exe
CC ?= gcc
CLIBFLAGS =
CLINKFLAGS = -shared
CPPFLAGS += -DSEXP_USE_STRING_STREAMS=0 -DSEXP_USE_GREEN_THREADS=0 -DSEXP_USE_GC_FILE_DESCRIPTORS=0 -DBUILDING_DLL
LIBCHIBI_FLAGS = -Wl,--out-implib,libchibi-scheme$(SO).a
STATICFLAGS =
STATIC_LDFLAGS = -lm -ldl
LIBDL = -lws2_32
else
ifeq ($(PLATFORM),msys)
SO  = .dll
EXE = .exe
CC = gcc
CLIBFLAGS =
CLINKFLAGS = -shared
CPPFLAGS += -DSEXP_USE_STRING_STREAMS=0
LIBCHIBI_FLAGS = -Wl,--out-implib,libchibi-scheme$(SO).a
STATIC_LDFLAGS = -lm -ldl
else
ifeq ($(PLATFORM),cygwin)
SO  = .dll
EXE = .exe
CC = gcc
CLIBFLAGS =
CLINKFLAGS = -shared
CPPFLAGS += -DSEXP_USE_STRING_STREAMS=0
LIBCHIBI_FLAGS = -Wl,--out-implib,libchibi-scheme$(SO).a
STATIC_LDFLAGS = -lm -ldl
else
SO  = .so
EXE =
CLIBFLAGS = -fPIC
CLINKFLAGS = -shared
STATICFLAGS = -static -DSEXP_USE_DL=0
LIBCHIBI_FLAGS = -Wl,-soname,libchibi-scheme$(SO).$(SOVERSION_MAJOR)
endif
endif
endif
endif
endif
endif

ifeq ($(PLATFORM),emscripten)
STATIC_LDFLAGS = -lm -ldl
endif

ifeq ($(PLATFORM),unix)
#RLDFLAGS=-rpath $(LIBDIR)
RLDFLAGS=-Wl,-R$(LIBDIR)
endif

########################################################################
# Library config.
#
# This is to allow "make SEXP_USE_BOEHM=1" and "make SEXP_USE_DL=0" to
# automatically include the necessary compiler and linker flags in
# addition to setting those features.  If not using GNU make just
# comment out the ifs and use the else branches for the defaults.

ifeq ($(SEXP_USE_BOEHM),1)
GCLDFLAGS := -lgc
XCPPFLAGS := $(CPPFLAGS) -Iinclude $(D:%=-DSEXP_USE_%) -DSEXP_USE_BOEHM=1
else
GCLDFLAGS :=
XCPPFLAGS := $(CPPFLAGS) -Iinclude $(D:%=-DSEXP_USE_%)
endif

ifeq ($(SEXP_USE_DL),0)
XLDFLAGS  := $(LDFLAGS) $(RLDFLAGS) $(GCLDFLAGS) -lm
XCFLAGS   := -Wall -DSEXP_USE_DL=0 -g -g3 -O3 $(CFLAGS)
else
XLDFLAGS  := $(LDFLAGS) $(RLDFLAGS) $(GCLDFLAGS) $(LIBDL) -lm
XCFLAGS   := -Wall -g -g3 -O3 $(CFLAGS)
endif

ifeq ($(PLATFORM),solaris)
XLDFLAGS += -lsocket
XCPPFLAGS += -D_POSIX_PTHREAD_SEMANTICS
endif

# Choose compiled library on MSYS
ifeq ($(OS), Windows_NT)
ifeq ($(PLATFORM),msys)
EXCLUDE_WIN32_LIBS=1
else
ifeq ($(shell uname -o),Cygwin)
EXCLUDE_WIN32_LIBS=1
else
EXCLUDE_POSIX_LIBS=1
endif
endif
endif

CHIBI_POSIX_COMPILED_LIBS = lib/chibi/process$(SO) lib/chibi/time$(SO) \
	lib/chibi/system$(SO) lib/chibi/stty$(SO) lib/chibi/pty$(SO) \
	lib/chibi/net$(SO) lib/srfi/18/threads$(SO)
CHIBI_WIN32_COMPILED_LIBS = lib/chibi/win32/process-win32$(SO)

ifndef EXCLUDE_POSIX_LIBS
CHIBI_COMPILED_LIBS += $(CHIBI_POSIX_COMPILED_LIBS)
else
CHIBI_COMPILED_LIBS += $(CHIBI_WIN32_COMPILED_LIBS)
endif

########################################################################
# Check for headers (who needs autoconf?)

ifndef SEXP_USE_NTP_GETTIME
SEXP_USE_NTP_GETTIME := $(shell echo "int main(){struct ntptimeval n; ntp_gettime(&n);}" | $(CC) -fsyntax-only -include sys/timex.h -xc - >/dev/null 2>/dev/null && echo 1 || echo 0)
endif

ifeq ($(SEXP_USE_NTP_GETTIME),1)
XCPPFLAGS += -DSEXP_USE_NTPGETTIME
endif

ifndef SEXP_USE_INTTYPES
SEXP_USE_INTTYPES := $(shell echo "int main(){int_least8_t x;}" | $(CC) -fsyntax-only -include inttypes.h -xc - >/dev/null 2>/dev/null && echo 1 || echo 0)
endif

ifeq ($(SEXP_USE_INTTYPES),1)
XCPPFLAGS += -DSEXP_USE_INTTYPES
endif