# You should have received a copy of the GNU General Public License
# along with simavr. If not, see <http://www.gnu.org/licenses/>.
+# simavr directory
+SIMAVR ?= ${shell for p in . .. ../.. ../../..;do test -d $$p/simavr/sim && echo $$p/simavr; done}
+
+# You can override the build settings with local changes in this file
+# for example:
+# export CC=clang
+# export CFLAGS=-march=corei7-avx
+# etc
+-include ${wildcard ${SIMAVR}/../.make.options*}
+
+# get the first character of what the compiler says it is, unless it's 'x86_64' doh
+ARCH = ${shell $(CC) -dumpmachine | sed -e 's/^x/i/' -e 's/\(.\).*/\1/'}
+
+CFLAGS += -O2 -Wall
+CFLAGS += -g
+
+ifeq (${shell uname}, Darwin)
+# gcc 4.2 from MacOS is really not up to scratch anymore
+CC = clang
+AVR_ROOT := "/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/"
+AVR_INC := ${AVR_ROOT}/avr-4/
+AVR := ${AVR_ROOT}/bin/avr-
+# Thats for MacPorts libelf
+ifeq (${shell test -d /opt/local && echo Exists}, Exists)
+IPATH += /opt/local/include
+LFLAGS = -L/opt/local/lib/
+endif
+else
+AVR_ROOT := /usr/lib/avr
+AVR_INC := ${AVR_ROOT}
+AVR := avr-
+CFLAGS += -fPIC
+endif
+
+CPPFLAGS += --std=gnu99 -Wall
+CPPFLAGS += ${patsubst %,-I%,${subst :, ,${IPATH}}}
+
+AVR_CPPFLAGS= ${CPPFLAGS} -idirafter ${AVR_INC}/include
+
+CC ?= clang
+AR ?= ar
+RANLIB ?= ranlib
+MKDIR ?= mkdir -p
+INSTALL ?= install
+SHELL := ${shell which bash}
+
+OBJ = obj-${shell $(CC) -dumpmachine}
+LIBDIR = ${shell pwd}/${SIMAVR}/${OBJ}
+LDFLAGS += -L${LIBDIR} -lsimavr
+
+LDFLAGS += -lelf
+
+ifeq (${shell uname}, Linux)
+# allow the shared library to be found in the build directory
+LFLAGS += -Wl,-rpath,${LIBDIR}
+endif
+
+# The code is compiled "optimized" to the max.
+#
+# The wierd "-Wl,--undefined=_mmcu,--section-start=.mmcu=0x910000"
+# is used to tell the linker not to discard the .mmcu section,
+# otherwise the --gc-sections will delete it.
+
%.hex: %.axf
- @${AVR}objcopy -j .text -j .data -O ihex ${<} ${@}
+ @${AVR}objcopy -j .text -j .data -j .eeprom -O ihex ${<} ${@}
%.s: %.axf
- @${AVR}objdump -j .text -j .data -j .bss -d ${<} > ${@}
+ @${AVR}objdump -j .text -j .data -j .bss -d ${<} > ${@}
-# --mcall-prologues
+# --mcall-prologues can be used here, but messes up debugging a little
%.axf: %.c
- @echo CC ${<}
- @part=${<} ; part=$${part/_*}; \
- ${AVR}gcc -Wall -gdwarf-2 -Os -std=gnu99 \
- -mmcu=$$part \
- -DF_CPU=8000000 \
- -fno-inline-small-functions \
- -ffunction-sections -fdata-sections \
- -Wl,--relax,--gc-sections \
- -Wl,--undefined=_mmcu,--section-start=.mmcu=0x910000 \
- -I../include \
- ${<} -o ${@}
- @${AVR}size ${@}|sed '1d'
+ @echo AVR-CC ${<}
+ @part=${<} ; part=$${part/_*}; \
+ ${AVR}gcc -Wall -gdwarf-2 -Os -std=gnu99 \
+ -mmcu=$$part \
+ -DF_CPU=8000000 \
+ -fno-inline-small-functions \
+ -ffunction-sections -fdata-sections \
+ -Wl,--relax,--gc-sections \
+ -Wl,--undefined=_mmcu,--section-start=.mmcu=0x910000 \
+ -I../include -I../../include \
+ ${^} -o ${@}
+ @${AVR}size ${@}|sed '1d'
+
+# this rule has precedence
+${OBJ}/sim_%.o : cores/sim_%.c
+ifeq ($(V),1)
+ $(CC) $(CPPFLAGS) $(CFLAGS) -MMD \
+ ${AVR_CPPFLAGS} \
+ $< -c -o $@
+else
+ @$(CC) $(CPPFLAGS) $(CFLAGS) $(CFLAGS) -MMD \
+ ${AVR_CPPFLAGS} \
+ $< -c -o $@
+ @echo CORE $<
+endif
+
+${OBJ}/%.o: %.c
+ifeq ($(V),1)
+ $(CC) $(CPPFLAGS) $(CFLAGS) -MMD \
+ $< -c -o $@
+else
+ @$(CC) $(CPPFLAGS) $(CFLAGS) -MMD \
+ $< -c -o $@
+ @echo CC $<
+endif
+
+${OBJ}/%.elf:
+ifeq ($(V),1)
+ $(CC) -MMD ${CFLAGS} ${LFLAGS} -o $@ $^ $(LDFLAGS)
+else
+ @echo LD $@
+ @$(CC) -MMD ${CFLAGS} ${LFLAGS} -o $@ $^ $(LDFLAGS)
+endif
+
+obj: ${OBJ}
+
+${OBJ}:
+ @mkdir -p ${OBJ}
+
+clean-${OBJ}:
+ rm -rf ${OBJ}
+
+# include the dependency files generated by gcc, if any
+-include ${wildcard ${OBJ}/*.d}