#-*- Makefile -*-
# $(R_HOME}/etc$(R_ARCH)/Makeconf

# Hand-edited version for gnuwin32.

ifdef DEBUG
  DLLFLAGS=
  DEBUGFLAG=-gdwarf-2
else
  DLLFLAGS=-s
  DEBUGFLAG=
endif

DLLFLAGS += -static-libgcc
LINKFLAGS += -static-libgcc


## Things which are substituted by fixed/Makefile (and also -O3 -> -O2)
WIN = 32
MINGW_PREFIX = /mingw$(WIN)
BINPREF =
COMPILED_BY =
# SYMPAT = 's/^.* [BCDRT] _/ /p' for 32-bit
# SYMPAT = 's/^.* [BCDRT] / /p' for 64-bit
SYMPAT = @SYMPAT@
IMPDIR = bin
# flags for multilib builds, for compilers, dlltool and windres
M_ARCH =
DT_ARCH =
RC_ARCH =
# Used by packages tcltk and tkrplot
TCL_HOME = $(R_HOME)/Tcl

# automatically rewritten to assign value from MkRules
LOCAL_SOFT ?=

R_INSTALLER_BUILD = no
# INSTALLER-BUILD: R_INSTALLER_BUILD = yes
ifeq ($(R_INSTALLER_BUILD), yes)
  ifneq ($(strip $(R_CUSTOM_TOOLS_SOFT)),)
    LOCAL_SOFT = $(R_CUSTOM_TOOLS_SOFT)
  else
    ## The rtools43 installer sets RTOOLS43_HOME
    RTOOLS43_HOME ?= c:/rtools43
    LOCAL_SOFT = $(subst \,/,$(RTOOLS43_HOME))/x86_64-w64-mingw32.static.posix
  endif
endif
R_TOOLS_SOFT ?= $(LOCAL_SOFT)

NM_FILTER =

ifneq ($(strip $(LOCAL_SOFT)),)
LOCAL_CPPFLAGS = -I"$(LOCAL_SOFT)/include"
LOCAL_LIBS = -L"$(LOCAL_SOFT)/lib$(R_ARCH)" -L"$(LOCAL_SOFT)/lib"
endif

DLLTOOL = $(BINPREF)dlltool --as $(BINPREF)as $(DT_ARCH)
DLLTOOLFLAGS = -k
NM = $(BINPREF)nm
RESCOMP = $(BINPREF)windres $(RC_ARCH)
## MAIN_LD needs to be set by the package
LINKER = $(MAIN_LD)
## as a default
DLL = $(CC)

## Things defined in Renviron on Unix
SED = sed
TAR ?= tar
TAR_OPTIONS ?= --force-local

## Things defined in MkRules
CAT = cat
CP = cp
MKDIR = mkdir
RM = rm -f
SORT = sort

## For use in packages
GRAPHAPP_LIB = -lRgraphapp
TCL_VERSION = 86
# was a reference to Rzlib.dll in R < 3.2.0
ZLIB_LIBS = -lz

AR = $(BINPREF)ar
BLAS_LIBS = -L"$(R_HOME)/$(IMPDIR)" -lRblas
C_VISIBILITY = 
CC = $(BINPREF)gcc $(M_ARCH)
CFLAGS = -O3 -Wall $(DEBUGFLAG) @EOPTS@ $(LTO)
CPICFLAGS = 
CPPFLAGS =
CC17 = $(BINPREF)gcc $(M_ARCH)
C17FLAGS = -O3 -Wall $(DEBUGFLAG) -std=gnu17 @EOPTS@ $(LTO)
CC23 = $(BINPREF)gcc $(M_ARCH)
C23FLAGS = -O3 -Wall $(DEBUGFLAG) -std=gnu2x @EOPTS@ $(LTO)
CC90 = $(BINPREF)gcc $(M_ARCH)
C90FLAGS = -O3 -Wall $(DEBUGFLAG) -std=gnu90 @EOPTS@ $(LTO)
CC99 = $(BINPREF)gcc $(M_ARCH)
C99FLAGS = -O3 -Wall $(DEBUGFLAG) -std=gnu99 @EOPTS@ $(LTO)
CXX = $(BINPREF)g++ -std=gnu++17 $(M_ARCH)
CXXCPP = $(CXX) -E
CXXFLAGS = -O2 -Wall $(DEBUGFLAG) @EOPTS@ $(LTO)
CXXPICFLAGS =
CXX11 = $(BINPREF)g++ $(M_ARCH)
CXX11FLAGS = -O2 -Wall $(DEBUGFLAG) @EOPTS@ $(LTO)
CXX11PICFLAGS =
CXX11STD = -std=gnu++11
## these settings are for GCC >= 10
CXX14 = $(CXX11)
CXX14FLAGS = $(CXX11FLAGS)
CXX14PICFLAGS =
CXX14STD = -std=gnu++14
CXX17 = $(CXX11)
CXX17FLAGS = $(CXX11FLAGS)
CXX17PICFLAGS =
CXX17STD = -std=gnu++17
CXX20 = $(CXX11)
CXX20FLAGS = $(CXX11FLAGS)
CXX20PICFLAGS =
## g++ 8/9 used 2a, 10 supports 20.
CXX20STD = -std=gnu++20
CXX23 = $(CXX11)
CXX23FLAGS = $(CXX11FLAGS)
CXX23PICFLAGS =
## g++ >= 11 allow 23
CXX23STD = -std=gnu++2b
DYLIB_EXT = .dll
DYLIB_LD = $(DLL)
DYLIB_LDFLAGS = -shared
DYLIB_LINK = $(DYLIB_LD) $(DYLIB_LDFLAGS) $(LDFLAGS)
ECHO = echo
ECHO_C = 
ECHO_N = -n
ECHO_T = 
## unsupported on Windows
F_VISIBILITY = 
## FC is the compiler used for all Fortran as from R 3.6.0
FC = $(BINPREF)gfortran $(M_ARCH)
FCFLAGS = -O3 $(DEBUGFLAG) @EOPTS@ $(LTO)
## additional libs needed when linking with $(FC), e.g. on some Oracle compilers
FCLIBS_XTRA =
#F77 = $(BINPREF)gfortran $(M_ARCH)
#F77_VISIBILITY = 
FFLAGS = -O3 $(DEBUGFLAG) @EOPTS@ $(LTO)
FLIBS = -lgfortran -lm -lquadmath
#FCPICFLAGS =
FPICFLAGS = 
FOUNDATION_CPPFLAGS =
FOUNDATION_LIBS =
JAR =
JAVA =
JAVAC = 
JAVAH =
## JAVA_HOME might be used in the next three.  
## They are for packages 'JavaGD' and 'rJava'
# JAVA_HOME = 
JAVA_CPPFLAGS = -I"$(JAVA_HOME)/../include" -I"$(JAVA_HOME)/../include/win32"
JAVA_LIBS = -L"$(JAVA_HOME)/bin/client" -ljvm -ljvm-w32
# JAVA_LD_LIBRARY_PATH = 
LAPACK_LIBS = -L"$(R_HOME)/$(IMPDIR)" -lRlapack
LDFLAGS =
## we only need this is if it is external, as otherwise link to R
LIBINTL =
LIBM = -lm
LIBR = -L"$(R_HOME)/$(IMPDIR)" -lR
LIBS =  -lm
## needed by R CMD config
LIBnn = lib
LIBTOOL =
LTO =
## used in INSTALL
LTO_OPT =
## needed to build applications linking to static libR
# MAIN_LD =
# MAIN_LDFLAGS =
# MAIN_LINK = $(MAIN_LD) $(MAIN_LDFLAGS) $(LDFLAGS)
# assume suitable mkdir on PATH (e.g. from Msys2)
MKINSTALLDIRS = mkdir -p
NM = $(BINPREF)nm
## There is no ObjC support in the recommended toolchain,
## but if a toolchain had support, this it what it would be.
OBJC = $(CC)
OBJCFLAGS = -O2
OBJC_LIBS = -lobjc
OBJCXX =
OBJDUMP = $(BINPREF)objdump
R_ARCH =
RANLIB = $(BINPREF)ranlib
SAFE_FFLAGS = -O2 -msse2 -mfpmath=sse
SED = sed
## it seems some makes (but not ours) get upset if SHELL is set.
# SHELL = /bin/sh
SHLIB_CFLAGS = 
SHLIB_CXXFLAGS = 
SHLIB_CXXLD = $(CXX)
## ideally -shared -static-libstdc++, but not for gcc 4.2.1
SHLIB_CXXLDFLAGS = -shared
#SHLIB_CXX98LD = $(CXX98)
#SHLIB_CXX98LDFLAGS = -shared
SHLIB_CXX11LD = $(CXX11)
SHLIB_CXX11LDFLAGS = -shared
SHLIB_CXX14LD = $(CXX14)
SHLIB_CXX14LDFLAGS = -shared
SHLIB_CXX17LD = $(CXX17)
SHLIB_CXX17LDFLAGS = -shared
SHLIB_CXX20LD = $(CXX20)
SHLIB_CXX20LDFLAGS = -shared
SHLIB_CXX23LD = $(CXX23)
SHLIB_CXX23LDFLAGS = -shared
SHLIB_EXT = .dll
SHLIB_FCLD = $(FC)
## ideally -shared -static-libgfortran, but not for gcc 4.2.1
SHLIB_FCLDFLAGS = -shared
SHLIB_FFLAGS = 
SHLIB_LD = $(CC)
SHLIB_LDFLAGS = -shared
SHLIB_LIBADD =
SHLIB_LINK = $(SHLIB_LD) -Wl,--export-all-symbols $(SHLIB_LDFLAGS) $(LDFLAGS)
SHLIB_OPENMP_CFLAGS = @OPENMP@
SHLIB_OPENMP_CXXFLAGS = @OPENMP@
SHLIB_OPENMP_FCFLAGS = @OPENMP@
SHLIB_OPENMP_FFLAGS = @OPENMP@
SHLIB_PTHREAD_FLAGS = @PTHREAD@
STRIP_SHARED_LIB = $(BINPREF)strip --strip-unneeded
STRIP_STATIC_LIB = $(BINPREF)strip --strip-debug
TCLTK_CPPFLAGS = -I "$(TCL_HOME)/include" -DWin32
TCLTK_LIBS = -L"$(TCL_HOME)/bin" -ltcl$(TCL_VERSION) -ltk$(TCL_VERSION)

STATIC_LIBR =

R_XTRA_CFLAGS =
## Allow next to be overriden for cross-builds.
R_XTRA_CPPFLAGS ?= -I"$(R_HOME)/include" -DNDEBUG
R_XTRA_CXXFLAGS = 
R_XTRA_FFLAGS =

ifneq "$(LTO_OPT)" ""
LTO = $(LTO_OPT)
AR = $(BINPREF)gcc-ar
NM = $(BINPREF)gcc-nm
RANLIB = $(BINPREF)gcc-ranlib
SHLIB_LDFLAGS += $(CFLAGS)
SHLIB_FCLDFLAGS += $(FFLAGS)
SHLIB_CXXLDFLAGS += $(CXXFLAGS)
SHLIB_CXX11LDFLAGS += $(CXX11FLAGS)
SHLIB_CXX14LDFLAGS += $(CXX14FLAGS)
SHLIB_CXX17LDFLAGS += $(CXX17FLAGS)
SHLIB_CXX20LDFLAGS += $(CXX20FLAGS)
endif

ALL_CFLAGS = $(R_XTRA_CFLAGS) $(PKG_CFLAGS) $(CPICFLAGS) $(SHLIB_CFLAGS) $(CFLAGS)
ALL_CPPFLAGS = $(R_XTRA_CPPFLAGS) $(PKG_CPPFLAGS) $(CLINK_CPPFLAGS) $(CPPFLAGS) $($*-CPPFLAGS) $(LOCAL_CPPFLAGS)
ALL_CXXFLAGS = $(R_XTRA_CXXFLAGS) $(PKG_CXXFLAGS) $(CXXPICFLAGS) $(SHLIB_CXXFLAGS) $(CXXFLAGS)
ALL_OBJCFLAGS = $(PKG_OBJCFLAGS) $(CPICFLAGS) $(SHLIB_CFLAGS) $(OBJCFLAGS)
ALL_OBJCXXFLAGS = $(PKG_OBJCXXFLAGS) $(CXXPICFLAGS) $(SHLIB_CXXFLAGS) $(OBJCXXFLAGS)
ALL_FFLAGS = $(R_XTRA_FFLAGS) $(PKG_FFLAGS) $(FPICFLAGS) $(SHLIB_FFLAGS) $(FFLAGS)
ALL_LIBS = $(PKG_LIBS) $(LOCAL_LIBS) $(SHLIB_LIBADD) $(LIBR) $(LIBINTL)
## can be overridden by SHLIB
P_FCFLAGS = $(PKG_FFLAGS)
ALL_FCFLAGS = $(R_XTRA_FFLAGS) $(P_FCFLAGS) $(FPICFLAGS) $(SHLIB_FFLAGS) $(FCFLAGS)

.SUFFIXES:
.SUFFIXES: .c .cc .cpp .d .f .f90 .f95 .m .mm .M .o .a .def .dll .exe .rc

.c.o:
	$(CC) $(ALL_CPPFLAGS) $(ALL_CFLAGS) -c $< -o $@
.c.d:
	@echo "making $@ from $<"
	@$(CC) -std=gnu99 -MM $(ALL_CPPFLAGS) $< > $@
.cc.o:
	$(CXX) $(ALL_CPPFLAGS) $(ALL_CXXFLAGS) -c $< -o $@
.cpp.o:
	$(CXX) $(ALL_CPPFLAGS) $(ALL_CXXFLAGS) -c $< -o $@
.cc.d:
	@echo "making $@ from $<"
	@$(CXX) -M $(ALL_CPPFLAGS) $< > $@
.cpp.d:
	@echo "making $@ from $<"
	@$(CXX) -M $(ALL_CPPFLAGS) $< > $@
.m.o:
	$(OBJC) $(ALL_CPPFLAGS) $(ALL_OBJCFLAGS) -c $< -o $@
.m.d:
	@echo "making $@ from $<"
	@$(OBJC) -MM $(ALL_CPPFLAGS) $< > $@
.mm.o:
	$(OBJCXX) $(ALL_CPPFLAGS) $(ALL_OBJCXXFLAGS) -c $< -o $@
.M.o:
	$(OBJCXX) $(ALL_CPPFLAGS) $(ALL_OBJCXXFLAGS) -c $< -o $@
.f.o:
	$(FC) $(ALL_FFLAGS) -c $< -o $@
.f95.o:
	$(FC) $(ALL_FCFLAGS) -c  $< -o $@
.f90.o:
	$(FC) $(ALL_FCFLAGS) -c  $< -o $@

## Not used in R itself
%.exe:
	$(LINKER) $(LINKFLAGS) $($*-LINKFLAGS) -o $@ $^ $($*-LIBS) $(LOCAL_LIBS) $(LIBS)

%.dll:
	@echo EXPORTS > $*.def
	@$(NM) $^ | $(SED) -n $(SYMPAT) >> $*.def
	$(SHLIB_LD) $(SHLIB_LDFLAGS) $(DLLFLAGS) -o $@ $*.def $^ $(ALL_LIBS)
	@$(RM) $*.def

## It does not make much sense to have $($*-DLLTOOLFLAGS) here
## It is currently unused on CRAN
lib%.dll.a: %.def
	$(DLLTOOL) $(DLLTOOLFLAGS) $($*-DLLTOOLFLAGS) --dllname $*.dll --input-def $*.def --output-lib $@

%.a:
	@$(RM) $@
	$(AR) crs $@ $^

%.o: %.rc
	$(RESCOMP) $(RESFLAGS) -i $< -o $@