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Makefile.uk
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Makefile.uk
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################################################################################
#
# Global Unikraft definitions
#
################################################################################
COMPFLAGS += -nostdlib
COMPFLAGS += -U __linux__ -U __FreeBSD__ -U __sun__
COMPFLAGS += -fno-omit-frame-pointer
# treat "attribute directive ignored" as error for FlexOS, this is indicative
# that a rewriting pass failed
COMPFLAGS += -Werror=attributes
# because of Coccinelle, a good number of __unused attributes have to be removed
# as a consequence we experience many spurious warnings. Disable them for now
COMPFLAGS += -Wno-unused-variable
COMPFLAGS-$(call have_gcc) += -fno-tree-sra -fno-split-stack -nostdinc
ifneq ($(HAVE_STACKPROTECTOR),y)
COMPFLAGS += -fno-stack-protector
endif
COMPFLAGS += -Wall -Wextra
ASFLAGS += -D__ASSEMBLY__
ASINCLUDES += -I$(CONFIG_UK_BASE)/include
CINCLUDES += -I$(CONFIG_UK_BASE)/include
CXXINCLUDES += -I$(CONFIG_UK_BASE)/include
GOCINCLUDES += -I$(CONFIG_UK_BASE)/include
RUSTCFLAGS-y += --emit=obj --crate-type=rlib --edition=2018 \
-Cpanic=abort -Cembed-bitcode=n \
-Zbinary_dep_depinfo=y -Zsymbol-mangling-version=v0 \
-Cforce-unwind-tables=n -Ccodegen-units=1 \
-Dunsafe_op_in_unsafe_fn -Drust_2018_idioms
RUSTCFLAGS-$(CONFIG_OPTIMIZE_NONE) += -Copt-level="0"
RUSTCFLAGS-$(CONFIG_OPTIMIZE_SIZE) += -Copt-level="s"
RUSTCFLAGS-$(CONFIG_OPTIMIZE_PERF) += -Copt-level="2"
RUSTCFLAGS-$(CONFIG_DEBUG_SYMBOLS_LVL0) += -Cdebuginfo=0
RUSTCFLAGS-$(CONFIG_DEBUG_SYMBOLS_LVL1) += -Cdebuginfo=1
RUSTCFLAGS-$(CONFIG_DEBUG_SYMBOLS_LVL2) += -Cdebuginfo=2
# NOTE: There is not level 3 in rustc
RUSTCFLAGS-$(CONFIG_DEBUG_SYMBOLS_LVL3) += -Cdebuginfo=2
# NOTE: rustc supports LTO only with clang
ifeq ($(call have_clang),y)
RUSTCFLAGS-$(CONFIG_OPTIMIZE_LTO) += -Clinker-plugin-lto
else
RUSTCFLAGS-y += -Cembed-bitcode=n -Clto=n
endif
LIBLDFLAGS += -nostdlib -Wl,-r -Wl,-d -Wl,--build-id=none -no-pie
LIBLDFLAGS-$(call have_gcc) += -nostdinc
# Set the text and data sections to be readable and writable. Also,
# do not page-align the data segment. If the output format supports
# Unix style magic numbers, mark the output as OMAGIC.
LDFLAGS += -nostdlib -Wl,--omagic -Wl,--build-id=none
LDFLAGS-$(call have_gcc) += -nostdinc
COMPFLAGS-$(CONFIG_OPTIMIZE_NONE) += -O0 -fno-optimize-sibling-calls -fno-tree-vectorize
COMPFLAGS-$(CONFIG_OPTIMIZE_SIZE) += -Os
COMPFLAGS-$(CONFIG_OPTIMIZE_PERF) += -O2
COMPFLAGS-$(CONFIG_OPTIMIZE_DEADELIM) += -fdata-sections -ffunction-sections
LDFLAGS-$(CONFIG_OPTIMIZE_DEADELIM) += -Wl,--gc-sections
# LTO requires the compiler flags to be handed over also for linking
COMPFLAGS-$(CONFIG_OPTIMIZE_LTO) += -flto
LIBLDFLAGS-$(CONFIG_OPTIMIZE_LTO) += $(COMPFLAGS) $(COMPFLAGS-y) $(ARCHFLAGS) $(ARCHFLAGS-y)
LDFLAGS-$(CONFIG_OPTIMIZE_LTO) += $(COMPFLAGS) $(COMPFLAGS-y) $(ARCHFLAGS) $(ARCHFLAGS-y)
DBGFLAGS-$(CONFIG_DEBUG_SYMBOLS_LVL0) += -g0
DBGFLAGS-$(CONFIG_DEBUG_SYMBOLS_LVL1) += -g1
DBGFLAGS-$(CONFIG_DEBUG_SYMBOLS_LVL2) += -g2
DBGFLAGS-$(CONFIG_DEBUG_SYMBOLS_LVL3) += -g3
COMPFLAGS += -D __Unikraft__ -DUK_CODENAME="$(UK_CODENAME)"
COMPFLAGS += -DUK_VERSION=$(UK_VERSION).$(UK_SUBVERSION)
COMPFLAGS += -DUK_FULLVERSION=$(UK_FULLVERSION)
ISR_ARCHFLAGS += -D__INTERRUPTSAFE__
M4FLAGS += -D __Unikraft__ -DUK_CODENAME="$(UK_CODENAME)"
M4FLAGS += -DUK_VERSION=$(UK_VERSION).$(UK_SUBVERSION)
# If GCC supports "-no-pie" flag, we will add this flag to link flags to
# override "pie" option, because some distributions will set
# "--enable-default-pie" by default.
COMPFLAGS-$(call gcc_version_ge,6,1) += -fno-PIC
LDFLAGS-$(call gcc_version_ge,6,1) += -no-pie
ifeq ($(call gcc_version_ge,10,0),y)
COMPFLAGS-y += -fhosted -ffreestanding -fno-tree-loop-distribute-patterns
LIBLDFLAGS-$(CONFIG_OPTIMIZE_LTO) += -flinker-output=nolto-rel
LDFLAGS-$(CONFIG_OPTIMIZE_LTO) += -flinker-output=nolto-rel
endif
COMPFLAGS-$(call have_clang) += -fno-builtin -fno-PIC
LDFLAGS-$(call have_clang) += -no-pie