Makefile

CC = gcc
#For older gcc, use -O3 or -O2 instead of -Ofast
# CFLAGS = -lm -pthread -Ofast -march=native -funroll-loops -Wno-unused-result

# Use -Ofast with caution. It speeds up training, but the checks for NaN will not work
# (-Ofast turns on --fast-math, which turns on -ffinite-math-only,
# which assumes everything is NOT NaN or +-Inf, so checks for NaN always return false
# see https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html)
# CFLAGS = -lm -pthread -Ofast -march=native -funroll-loops -Wall -Wextra -Wpedantic

CPU_ARCHITECTURE = $(shell uname -m)
OS = $(shell uname -o)
# Non-empty string if Apple Silicon, empty string otherwise.
APPLE_SILICON = $(and $(filter Darwin,$(OS)),$(filter arm64,$(CPU_ARCHITECTURE)))

# clang (which masquerades as gcc on macOS) doesn't support this option, at least
# not the Apple-provided clang on Apple Silicon as of macOS 13.2.1.
ifeq ($(APPLE_SILICON),)
CPU_ARCHITECTURE_FLAGS = -march=native
endif

CFLAGS = -lm -pthread -O3 $(CPU_ARCHITECTURE_FLAGS) -funroll-loops -Wall -Wextra -Wpedantic
BUILDDIR := build
SRCDIR := src
OBJDIR := $(BUILDDIR)

OBJ := $(OBJDIR)/vocab_count.o $(OBJDIR)/cooccur.o $(OBJDIR)/shuffle.o $(OBJDIR)/glove.o
HEADERS := $(SRCDIR)/common.h
MODULES := $(BUILDDIR)/vocab_count $(BUILDDIR)/cooccur $(BUILDDIR)/shuffle $(BUILDDIR)/glove


all: dir $(OBJ) $(MODULES)
dir :
	mkdir -p $(BUILDDIR)
$(BUILDDIR)/glove : $(OBJDIR)/glove.o $(OBJDIR)/common.o
	$(CC) $^ -o $@ $(CFLAGS)
$(BUILDDIR)/shuffle : $(OBJDIR)/shuffle.o $(OBJDIR)/common.o
	$(CC) $^ -o $@ $(CFLAGS)
$(BUILDDIR)/cooccur : $(OBJDIR)/cooccur.o $(OBJDIR)/common.o
	$(CC) $^ -o $@ $(CFLAGS)
$(BUILDDIR)/vocab_count : $(OBJDIR)/vocab_count.o $(OBJDIR)/common.o
	$(CC) $^ -o $@ $(CFLAGS)
$(OBJDIR)/%.o : $(SRCDIR)/%.c $(HEADERS)
	$(CC) -c $< -o $@ $(CFLAGS)
.PHONY: clean
clean:
	rm -rf $(BUILDDIR)