# MAKEFILE for linux GCC
#
# This makefile produces a shared object and requires libtool to be installed.
#
# Thanks to Zed Shaw for helping debug this on BSD/OSX.
# Tom St Denis
#
#  (GNU make only)

### USAGE:
#
# CFLAGS="-DUSE_LTM -DLTM_DESC -I/path/to/libtommath" make -f makefile.shared all EXTRALIBS=/path/to/libtommath/libtommath.a
# ./test
# make -f makefile.shared PREFIX=/opt/libtom install
#

PLATFORM := $(shell uname | sed -e 's/_.*//')
### Observed uname outputs:
# MINGW32_NT-6.2          (on MSYS/MINGW old)
# MINGW64_NT-10.0-14393   (on MSYS new)
# MSYS_NT-10.0-19042      (on MSYS2)
# CYGWIN_NT-10.0          (on Cygwin 64bit)
# CYGWIN_NT-6.2-WOW64     (on Cygwin 32bit)
# Linux                   (on all Linux distros)
# Darwin                  (on macOS, OS X)

ifeq ($(LIBTOOL),rlibtool)
  TGTLIBTOOL:=slibtool-shared
else
  ifndef LIBTOOL
    ifeq ($(PLATFORM), Darwin)
      TGTLIBTOOL:=glibtool
    else
      TGTLIBTOOL:=libtool
    endif
  else
    TGTLIBTOOL=$(LIBTOOL)
  endif
endif

ifneq ($(findstring $(PLATFORM),CYGWIN MINGW32 MINGW64 MSYS),)
  NO_UNDEFINED:=-no-undefined
endif

LTCOMPILE = $(TGTLIBTOOL) --mode=compile --tag=CC $(CC)
INSTALL_CMD = $(TGTLIBTOOL) --mode=install install
UNINSTALL_CMD = $(TGTLIBTOOL) --mode=uninstall rm

#Output filenames for various targets.
ifndef LIBNAME
   LIBNAME=libtomcrypt.la
endif


include makefile_include.mk

ifneq ($(findstring -DLTM_DESC,$(LTC_CFLAGS)),)
LTC_MPI_PROVIDERS_CFLAGS += -DLTM_DESC
LTC_MPI_PROVIDERS_LIBS += -ltommath
endif
ifneq ($(findstring -DTFM_DESC,$(LTC_CFLAGS)),)
LTC_MPI_PROVIDERS_CFLAGS += -DTFM_DESC
LTC_MPI_PROVIDERS_LIBS += -ltfm
endif
ifneq ($(findstring -DGMP_DESC,$(LTC_CFLAGS)),)
LTC_MPI_PROVIDERS_CFLAGS += -DGMP_DESC
LTC_MPI_PROVIDERS_LIBS += -lgmp
endif

#ciphers come in two flavours... enc+dec and enc
src/ciphers/aes/aes_enc.o: src/ciphers/aes/aes.c src/ciphers/aes/aes_tab.c
	$(LTCOMPILE) $(LTC_CFLAGS) $(CPPFLAGS) $(LTC_LDFLAGS) -DENCRYPT_ONLY -c src/ciphers/aes/aes.c -o src/ciphers/aes/aes_enc.o
src/ciphers/aes/aes_enc_desc.o: src/ciphers/aes/aes_desc.c
	$(LTCOMPILE) $(LTC_CFLAGS) $(CPPFLAGS) $(LTC_LDFLAGS) -DENCRYPT_ONLY -c src/ciphers/aes/aes_desc.c -o src/ciphers/aes/aes_enc_desc.o

.c.o:
	$(LTCOMPILE) $(LTC_CFLAGS) $(CPPFLAGS) $(LTC_LDFLAGS) -o $@ -c $<

LOBJECTS = $(OBJECTS:.o=.lo)

$(LIBNAME): $(OBJECTS)
	$(TGTLIBTOOL) --mode=link --tag=CC $(CC) $(LTC_LDFLAGS) $(LOBJECTS) $(EXTRALIBS) -o $@ -rpath $(LIBPATH) -version-info $(VERSION_LT) $(NO_UNDEFINED)

test: $(call print-help,test,Builds the library and the 'test' application to run all self-tests) $(LIBNAME) $(TOBJECTS)
	$(TGTLIBTOOL) --mode=link --tag=CC $(CC) $(LTC_LDFLAGS) -o $(TEST) $(TOBJECTS) $(LIBNAME) $(EXTRALIBS)

# build the demos from a template
define DEMO_template
$(1): $(call print-help,$(1),Builds the library and the '$(1)' demo) demos/$(1).o $$(LIBNAME)
	$$(TGTLIBTOOL) --mode=link --tag=CC $$(CC) $$(LTC_LDFLAGS) $$^ $$(EXTRALIBS) -o $(1)
endef

$(foreach demo, $(strip $(DEMOS)), $(eval $(call DEMO_template,$(demo))))

install: $(call print-help,install,Installs the library + headers + pkg-config file) .common_install
	sed -e 's,^prefix=.*,prefix=$(PREFIX),' -e 's,^Version:.*,Version: $(VERSION_PC),' -e 's,^libdir=.*,libdir=$(LIBPATH),' \
		-e 's,^includedir=.*,includedir=$(INCPATH),' \
		-e 's,@MPI_PROVIDERS_LIBS@,$(LTC_MPI_PROVIDERS_LIBS),' \
		-e 's,@MPI_PROVIDERS_CFLAGS@,$(LTC_MPI_PROVIDERS_CFLAGS),' libtomcrypt.pc.in > libtomcrypt.pc
	install -p -d $(DESTDIR)$(LIBPATH)/pkgconfig
	install -p -m 644 libtomcrypt.pc $(DESTDIR)$(LIBPATH)/pkgconfig/

install_bins: $(call print-help,install_bins,Installs the useful demos ($(USEFUL_DEMOS))) .common_install_bins

uninstall: $(call print-help,uninstall,Uninstalls the library + headers + pkg-config file) .common_uninstall
	rm $(DESTDIR)$(LIBPATH)/pkgconfig/libtomcrypt.pc

# ref:         $Format:%D$
# git commit:  $Format:%H$
# commit time: $Format:%ai$