feat: add support for aarch64 timer/interrupts, port MontaukOS userspace

programs/lib/libjpegwrite/Makefile

@@ -6,7 +6,7 @@ MAKEFLAGS += -rR
 
 # ---- Toolchain ----
 
-TOOLCHAIN_PREFIX := $(shell cd ../../.. && pwd)/toolchain/local/bin/x86_64-montauk-
+include ../../mk/arch.mk
 ifneq ($(wildcard $(TOOLCHAIN_PREFIX)gcc),)
     CC := $(TOOLCHAIN_PREFIX)gcc
     AR := $(TOOLCHAIN_PREFIX)ar
@@ -19,8 +19,7 @@ endif
 
 LIBC_INC := ../../include/libc
 PROG_INC := ../../include
-OBJDIR   := obj
-
+OBJDIR   := obj$(ARCH_SUFFIX)
 # ---- Compiler flags ----
 
 CFLAGS := \
@@ -37,25 +36,22 @@ CFLAGS := \
     -ffunction-sections \
     -fdata-sections \
     -fno-tree-loop-distribute-patterns \
-    -m64 \
-    -march=x86-64 \
-    -msse \
-    -msse2 \
-    -mno-red-zone \
-    -mcmodel=small \
+    $(ARCH_CFLAGS) \
+    $(ARCH_FP_FLAGS) \
     -I $(PROG_INC) \
     -isystem $(LIBC_INC) \
     -isystem $(shell $(CC) -print-file-name=include)
 
 # ---- Target ----
 
-TARGET := libjpegwrite.a
+TARGET := $(ARCH_OUT)libjpegwrite.a
 
 .PHONY: all clean
 
 all: $(TARGET)
 
 $(TARGET): $(OBJDIR)/stb_image_write_impl.o
+	@mkdir -p $(dir $@)
 	$(AR) rcs $@ $^
 
 $(OBJDIR)/stb_image_write_impl.o: stb_image_write_impl.c Makefile