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#Find the correct architecture to build for
ifndef ARCH
ARCH = $(shell getconf LONG_BIT)
endif
#Set correct flags for architecture
ifeq ($(ARCH), 32)
#Global
CXXFLAGS += -m32 -march=pentium4 -mtune=generic
#Arch name
ARCHNAME = x86
else
#Global
CXXFLAGS += -m64 -march=athlon64 -mtune=generic
#Arch name
ARCHNAME = x64
endif
#Global flags
ifeq ($(origin AR), default)
AR = gcc-ar
endif
BIN = libos.a
SRCDIR = source/os/source
UNAME = $(shell uname)
ifeq ($(UNAME), Darwin)
OSNAME = osx
else
OSNAME = lin
endif
ifdef DEBUG
OBJDIR = obj_d/$(OSNAME)$(ARCH)/os
BINDIR = obj_d/$(OSNAME)$(ARCH)
CXXFLAGS += -O0 -g
CXXFLAGS += -D_DEBUG
else
OBJDIR = obj/$(OSNAME)$(ARCH)/os
BINDIR = obj/$(OSNAME)$(ARCH)
CXXFLAGS += -Ofast
CXXFLAGS += -DNDEBUG
ifndef NLTO
CXXFLAGS += -flto
else
CXXFLAGS += -fno-lto
endif
endif
ifndef CC
CC = g++
endif
CXXFLAGS += -std=c++11
CXXFLAGS += -Wall -Wno-invalid-offsetof -Wno-switch -Wno-reorder
CXXFLAGS += -I./source/os/include -I./source/os/source -I./source/util/include
#Source code files
SOURCES = \
threads.cpp \
threads_gcc.cpp \
files.cpp \
files_linux.cpp \
virtual_asm_linux.cpp \
virtual_asm_$(ARCHNAME).cpp
CPP_FILES = $(addprefix $(SRCDIR)/, $(SOURCES))
OBJ_FILES = $(addprefix $(OBJDIR)/, $(SOURCES:.cpp=.o))
DEP_FILES = $(addprefix $(OBJDIR)/, $(SOURCES:.cpp=.d))
-include $(DEP_FILES)
compile: $(DEP_FILES) $(BINDIR)/$(BIN)
#Dependency files to take care of header changes
$(OBJDIR)/%.d: $(SRCDIR)/%.cpp
@mkdir -p $(dir $@)
@$(CC) $(CXXFLAGS) -MM -MT "$(@:.d=.o)" $< >> $@
#Object files are compiled separately
$(OBJDIR)/%.o: $(SRCDIR)/%.cpp
@mkdir -p $(dir $@)
@echo $<
@$(CC) $(CXXFLAGS) $< -c -o $@
#Complete binary compile
$(BINDIR)/$(BIN): $(OBJ_FILES)
@mkdir -p $(BINDIR)
$(AR) rcs $@ $^
clean:
@rm -rf $(OBJDIR)
@rm -f ./.depend

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