e2269220ac
When compiling the s390-ccw bios with Clang (v14.0), there is currently
an unuseful warning like this:
CC pc-bios/s390-ccw/ipv6.o
../../roms/SLOF/lib/libnet/ipv6.c:447:18: warning: variable length array
folded to constant array as an extension [-Wgnu-folding-constant]
unsigned short raw[ip6size];
^
SLOF is currently GCC-only and cannot be compiled with Clang yet, so
it is expected that such extensions sneak in there - and as long as
we don't want to compile the code with a compiler that is neither GCC
or Clang, it is also not necessary to avoid such extensions.
Thus these GNU-extension related warnings are completely useless in
the s390-ccw bios, especially in the code that is coming from SLOF,
so we should simply disable the related warnings here now.
Message-Id: <20220704111903.62400-13-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
66 lines
2.4 KiB
Makefile
66 lines
2.4 KiB
Makefile
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SLOF_DIR := $(SRC_PATH)/../../roms/SLOF
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NETOBJS := start.o sclp.o cio.o virtio.o virtio-net.o jump2ipl.o netmain.o
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LIBC_INC := -nostdinc -I$(SLOF_DIR)/lib/libc/include
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LIBNET_INC := -I$(SLOF_DIR)/lib/libnet
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NETLDFLAGS := $(LDFLAGS) -Wl,-Ttext=0x7800000
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$(NETOBJS): QEMU_CFLAGS += $(LIBC_INC) $(LIBNET_INC)
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s390-netboot.elf: $(NETOBJS) libnet.a libc.a
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$(call quiet-command,$(CC) $(NETLDFLAGS) -o $@ $^,"BUILD","$(TARGET_DIR)$@")
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s390-netboot.img: s390-netboot.elf
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$(call quiet-command,$(STRIP) --strip-unneeded $< -o $@,"STRIP","$(TARGET_DIR)$@")
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# SLOF is GCC-only, so ignore warnings about GNU extensions with Clang here
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NO_GNU_WARN := $(call cc-option,-Werror $(QEMU_CFLAGS),-Wno-gnu)
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# libc files:
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LIBC_CFLAGS = $(QEMU_CFLAGS) $(CFLAGS) $(NO_GNU_WARN) $(LIBC_INC) $(LIBNET_INC) \
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-MMD -MP -MT $@ -MF $(@:%.o=%.d)
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CTYPE_OBJS = isdigit.o isxdigit.o toupper.o
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%.o : $(SLOF_DIR)/lib/libc/ctype/%.c
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$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")
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STRING_OBJS = strcat.o strchr.o strrchr.o strcpy.o strlen.o strncpy.o \
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strcmp.o strncmp.o strcasecmp.o strncasecmp.o strstr.o \
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memset.o memcpy.o memmove.o memcmp.o
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%.o : $(SLOF_DIR)/lib/libc/string/%.c
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$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")
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STDLIB_OBJS = atoi.o atol.o strtoul.o strtol.o rand.o malloc.o free.o
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%.o : $(SLOF_DIR)/lib/libc/stdlib/%.c
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$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")
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STDIO_OBJS = sprintf.o snprintf.o vfprintf.o vsnprintf.o vsprintf.o fprintf.o \
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printf.o putc.o puts.o putchar.o stdchnls.o fileno.o
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%.o : $(SLOF_DIR)/lib/libc/stdio/%.c
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$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")
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sbrk.o: $(SLOF_DIR)/slof/sbrk.c
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$(call quiet-command,$(CC) $(LIBC_CFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")
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LIBCOBJS := $(STRING_OBJS) $(CTYPE_OBJS) $(STDLIB_OBJS) $(STDIO_OBJS) sbrk.o
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libc.a: $(LIBCOBJS)
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$(call quiet-command,$(AR) -rc $@ $^,"AR","$(TARGET_DIR)$@")
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# libnet files:
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LIBNETOBJS := args.o dhcp.o dns.o icmpv6.o ipv6.o tcp.o udp.o bootp.o \
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dhcpv6.o ethernet.o ipv4.o ndp.o tftp.o pxelinux.o
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LIBNETCFLAGS = $(QEMU_CFLAGS) $(CFLAGS) $(NO_GNU_WARN) $(LIBC_INC) $(LIBNET_INC) \
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-DDHCPARCH=0x1F -MMD -MP -MT $@ -MF $(@:%.o=%.d)
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%.o : $(SLOF_DIR)/lib/libnet/%.c
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$(call quiet-command,$(CC) $(LIBNETCFLAGS) -c -o $@ $<,"CC","$(TARGET_DIR)$@")
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libnet.a: $(LIBNETOBJS)
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$(call quiet-command,$(AR) -rc $@ $^,"AR","$(TARGET_DIR)$@")
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