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#*******************************************************************************
# Copyright (c) 2002, 2019 QNX Software Systems and others.
#
# This program and the accompanying materials
# are made available under the terms of the Eclipse Public License 2.0
# which accompanies this distribution, and is available at
# https://www.eclipse.org/legal/epl-2.0/
#
# SPDX-License-Identifier: EPL-2.0
#
# Contributors:
#     QNX Software Systems - initial API and implementation
#     Alex Blewitt - MacOSX with a 64-bit vm 
#*******************************************************************************/

ifeq ($(JAVA_HOME),)
$(error Please define JAVA_HOME)
endif

REPRODUCIBLE_BUILD_WRAPPER := $(shell git rev-parse --show-toplevel)/releng/scripts/reproducible_build_wrapper.py

OS_DIR = ../os

CFLAGS += -fPIC -D_REENTRANT
COMMON_CFLAGS := -Wall -pedantic

UNAME = $(shell uname)
ifeq ($(UNAME),Linux)
LIBS = \
	$(OS_DIR)/win32/x86_64/serial.dll \
	$(OS_DIR)/linux/x86_64/libserial.so \
	$(OS_DIR)/linux/aarch64/libserial.so \
	$(OS_DIR)/linux/ppc64le/libserial.so \
	$(OS_DIR)/macosx/x86_64/libserial.jnilib
else
ifeq ($(UNAME),Darwin)
LIBS = \
	$(OS_DIR)/macosx/x86_64/libserial.jnilib
else
LIBS = \
	$(OS_DIR)/win32/x86_64/serial.dll
endif
endif

all:	$(LIBS)

clean :
	$(RM) $(LIBS)

rebuild: clean all

# Windows DLLs have a build timestamp in them. This makes it impossible to have reproducible builds.
# However, x86_64-w64-mingw32-ld on Debian/Ubuntu has a patch that overrides the current date
# using the SOURCE_DATE_EPOCH environment variable. Call REPRODUCIBLE_BUILD_WRAPPER to make sure the
# same binary is produced for the same source each time.
$(OS_DIR)/win32/x86_64/serial.dll:	serial.c
	mkdir -p $(dir $@) && \
	$(REPRODUCIBLE_BUILD_WRAPPER) \
	x86_64-w64-mingw32-gcc $(COMMON_CFLAGS) -Iinclude -I"$(JAVA_HOME)/include" -I"$(JAVA_HOME)/include/win32" -shared -o $@ $^

$(OS_DIR)/linux/x86_64/libserial.so:	serial.c
	mkdir -p $(dir $@) && \
	x86_64-linux-gnu-gcc -m64 $(COMMON_CFLAGS) $(CFLAGS) -Iinclude -I$(JAVA_HOME)/include -I$(JAVA_HOME)/include/linux $(LDFLAGS) -shared -o $@ $^

$(OS_DIR)/linux/aarch64/libserial.so:	serial.c
	mkdir -p $(dir $@) && \
	aarch64-linux-gnu-gcc $(COMMON_CFLAGS) $(CFLAGS) -Iinclude -I$(JAVA_HOME)/include -I$(JAVA_HOME)/include/linux $(LDFLAGS) -shared -o $@ $^

$(OS_DIR)/linux/ppc64le/libserial.so:	serial.c
	mkdir -p $(dir $@)
	powerpc64le-linux-gnu-gcc $(COMMON_CFLAGS) -m64 -mcpu=power8 $(CFLAGS) -Iinclude -I$(JAVA_HOME)/include -I$(JAVA_HOME)/include/linux $(LDFLAGS) -shared -o $@ serial.c

$(OS_DIR)/macosx/x86_64/libserial.jnilib:	serial.c
	mkdir -p $(dir $@) && \
	x86_64-apple-darwin17-clang $(COMMON_CFLAGS) $(CFLAGS) -Iinclude -I$(JAVA_HOME)/include -I$(JAVA_HOME)/include/darwin $(LDFLAGS) -dynamiclib -o $@ $^

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