#
# The code is compiled "optimized" to the max.
#
-# The wierd "-Wl,--undefined=_mmcu,--section-start=.mmcu=0x910000"
+# The weird "-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.
#
# You should have received a copy of the GNU General Public License
# along with simavr. If not, see <http://www.gnu.org/licenses/>.
-CFLAGS += -g --std=gnu99 -O2
-CFLAGS += ${patsubst %,-I%,${subst :, ,${IPATH}}}
-LDFLAGS += -lelf
+# 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)
-AVR_ROOT := "/Applications/Arduino.app/Contents/Resources/Java/hardware/tools/avr/"
-AVR_INC := ${AVR_ROOT}/avr-4/
-AVR := ${AVR_ROOT}/bin/avr-
-LFLAGS += -L/opt/local/lib
+# 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-
+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"
+# The weird "-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.
-Wl,--relax,--gc-sections \
-Wl,--undefined=_mmcu,--section-start=.mmcu=0x910000 \
-I../include -I../../include \
- ${<} -o ${@}
+ ${^} -o ${@}
@${AVR}size ${@}|sed '1d'
-OBJ = obj
+# this rule has precedence
+${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
${OBJ}/%.o: %.c
- @$(CC) $(CFLAGS) -MD \
+ifeq ($(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}