diff options
Diffstat (limited to 'configure')
| -rwxr-xr-x | configure | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/configure b/configure new file mode 100755 index 0000000..aec448d --- /dev/null +++ b/configure @@ -0,0 +1,136 @@ +#!/usr/bin/env python3 +from glob import glob + +file = open('Makefile', 'w', encoding='utf-8') +def raw(s): + print(s, file=file) + +def srcobj(path): + srcs = glob(path + '/**/*.[csS]', recursive=True) + objs = ['out/obj/' + src.removeprefix('src/') + '.o' for src in srcs] + return ' ' + ' '.join(objs) + ' ' + +def t(out, deps='', cmds=[], phony=False, verbose=False): + if phony: + raw(f".PHONY: {out}") + else: + cmds = ["mkdir -p $(@D)"] + cmds + raw(f"{out}: {deps}") + v = '' if verbose else '@' + for cmd in cmds: + raw(f"\t{v}{cmd}") + + +raw(""" +# automatically generated by ./configure + +PATH := $(shell pwd)/toolchain/prefix/bin/:$(PATH) + +AR = x86_64-camellia-ar +AS = x86_64-camellia-as +CC = x86_64-camellia-gcc + +CFLAGS = -g -std=gnu99 -O2 -fPIC -ftrack-macro-expansion=0 \ + -Wall -Wextra -Wold-style-definition -Wno-address-of-packed-member \ + -Werror=incompatible-pointer-types -Werror=implicit-function-declaration + +CFLAGS_KERNEL = $(CFLAGS) \ + -ffreestanding -mno-sse -mgeneral-regs-only \ + --sysroot=src/kernel/sysroot/ -Isrc/ -Isrc/libk/include/ +CFLAGS_LIBC = $(CFLAGS) -ffreestanding -Isrc/ + +SPARSEFLAGS = $(CFLAGS_KERNEL) -Wno-non-pointer-null +""") + +t('all', 'out/boot.iso out/fs.e2 check', phony=True) +t('portdeps', 'out/libc.a out/libm.a src/libc/include/__errno.h', phony=True) + +# TODO check userland sources too +t('check', '', [ + 'find src/kernel/ -type f -name *.c | xargs -n 1 sparse $(SPARSEFLAGS)' +], phony=True) + +t('clean', '', [ + 'rm -rf out/' +], phony=True, verbose=True) + +raw(""" +PORTS= +.PHONY: ports +# portdeps is phony, so ports/% is automatically "phony" too +ports: $(patsubst %,ports/%,$(PORTS)) +ports/%: portdeps + +$@/port install +""") + +t('out/boot.iso', 'out/fs/boot/kernel out/fs/boot/grub/grub.cfg out/fs/boot/init', [ + 'grub-mkrescue -o $@ out/fs/ >/dev/null 2>&1' +]) + +t('out/fs/boot/kernel', 'src/kernel/arch/amd64/linker.ld' + srcobj('src/kernel/') + srcobj('src/libk/'), [ + '$(CC) -nostdlib -Wl,-zmax-page-size=4096 -Wl,--no-warn-mismatch -Wl,-no-pie -T $^ -o $@', + 'grub-file --is-x86-multiboot2 $@ || echo "$@ has an invalid multiboot2 header"', + 'grub-file --is-x86-multiboot2 $@ || rm $@; test -e $@' +]) + +t('out/libc.a', srcobj('src/libc/') + srcobj('src/libk/'), [ + '$(AR) rcs $@ $^' +]) +t('out/libm.a', '', [ + '$(AR) rcs $@ $^' +]) + +t('out/bootstrap', 'out/bootstrap.elf', ['objcopy -O binary $^ $@']) +t('out/bootstrap.elf', 'src/bootstrap/linker.ld' + srcobj('src/bootstrap/') + 'out/libc.a', [ + '$(CC) -nostdlib -Wl,-no-pie -T $^ -o $@' +]) + +t('out/fs/boot/init', 'out/bootstrap out/initrd.tar', ['cat $^ > $@']) + +t('out/fs/boot/grub/grub.cfg', 'src/kernel/arch/amd64/grub.cfg', ['cp $< $@']) + +t('out/fs.e2', '', ['mkfs.ext2 $@ 1024 >/dev/null']) + +userbins = glob('*', root_dir='src/cmd/') +raw("USERBINS = " + " ".join(userbins)) + +for cmd in userbins: + t(f'out/initrd/bin/amd64/{cmd}', 'out/libc.a' + srcobj(f'src/cmd/{cmd}'), [ + '$(CC) $^ -o $@' + ]) + +# don't build the example implementation from libext2 +t('out/obj/cmd/ext2fs/ext2/example.c.o', '', ['touch $@']) + +t('out/initrd/%', 'sysroot/%', ['cp $< $@']) + +t('out/initrd.tar', + '$(patsubst sysroot/%,out/initrd/%,$(shell find sysroot/ -type f)) ' + '$(patsubst %,out/initrd/bin/amd64/%,$(USERBINS)) ' + '$(shell find out/initrd/) ' + 'ports ', + ['cd out/initrd; tar chf ../initrd.tar *']) + +t('src/libc/include/__errno.h', + 'src/libc/include/__errno.h.awk src/libk/include/camellia/errno.h', + ['awk -f $^ > $@']) + +t('src/libc/syscall.c', + 'src/libc/syscall.c.awk src/libk/include/camellia/syscalls.h', + ['awk -f $^ > $@']) + +def cc(rule, args): + t(f'out/obj/{rule}.o', f'src/{rule}', [f'$(CC) -c $^ -o $@ {args}']) + +cc("%.c", "$(CFLAGS)") +cc("%.s", "$(CFLAGS)") +cc("%.S", "$(CFLAGS)") +cc("bootstrap/%.c", "$(CFLAGS) -fno-pie") +cc("kernel/%.c", "$(CFLAGS_KERNEL)") +cc("libc/%.c", "$(CFLAGS_LIBC)") +cc("libk/%.c", "$(CFLAGS_KERNEL)") + +cc("kernel/arch/amd64/32/%.c", "$(CFLAGS_KERNEL) -fno-pic -m32") +cc("kernel/arch/amd64/32/%.s", "$(CFLAGS_KERNEL) -fno-pic -m32") + +cc("libc/vendor/dlmalloc/%.c", "$(CFLAGS_LIBC) -DMAP_ANONYMOUS -DHAVE_MORECORE=0 -DNO_MALLOC_H -Wno-expansion-to-defined -Wno-old-style-definition") |