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https://github.com/checkpoint-restore/criu.git
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1544013406
Memory page compression requires liblz4, but making it mandatory would prevent CRIU from building on systems that do not provide it. Detect liblz4 with pkg-config and enable CONFIG_LZ4 only when it is available. Add NO_LZ4=1 as an explicit opt-out and register the development package in the supported distribution dependency lists. Install liblz4 for the per-commit build, then run a separate NO_LZ4 build and unit test to keep the optional configuration usable. Assisted-by: Codex:GPT-5 Signed-off-by: Radostin Stoyanov <rstoyanov@fedoraproject.org>
124 lines
4.2 KiB
Text
124 lines
4.2 KiB
Text
include $(__nmk_dir)utils.mk
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include $(__nmk_dir)msg.mk
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include scripts/feature-tests.mak
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# This is a kludge for $(info ...) to not eat spaces.
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S :=
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ifeq ($(call try-cc,$(FEATURE_TEST_LIBBSD_DEV),-lbsd),true)
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LIBS_FEATURES += -lbsd
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FEATURE_DEFINES += -DCONFIG_HAS_LIBBSD
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else
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$(info Note: Building without setproctitle() support.)
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$(info $S Install libbsd-devel (RPM) / libbsd-dev (DEB) to fix.)
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endif
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ifeq ($(call pkg-config-check,libselinux),y)
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LIBS_FEATURES += -lselinux
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FEATURE_DEFINES += -DCONFIG_HAS_SELINUX
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endif
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ifeq ($(call pkg-config-check,libbpf),y)
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LIBS_FEATURES += -lbpf
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FEATURE_DEFINES += -DCONFIG_HAS_LIBBPF
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export CONFIG_HAS_LIBBPF := y
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endif
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ifeq ($(call pkg-config-check,libdrm),y)
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export CONFIG_AMDGPU := y
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LIBDRM_CFLAGS := $(shell $(PKG_CONFIG) --cflags libdrm)
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ifeq ($(call try-cc,$(FEATURE_TEST_DRM_COLOR_CTM_3X4),,$(LIBDRM_CFLAGS)),true)
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export CONFIG_HAS_DRM_COLOR_CTM_3X4 := y
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FEATURE_DEFINES += -DHAVE_DRM_COLOR_CTM_3X4
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endif
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$(info Note: Building with amdgpu_plugin.)
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else
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$(info Note: Building without amdgpu_plugin.)
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$(info $S Install libdrm-devel (RPM) or libdrm-dev (DEB) to fix.)
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endif
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ifeq ($(NO_GNUTLS)x$(call pkg-config-check,gnutls),xy)
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LIBS_FEATURES += -lgnutls
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export CONFIG_GNUTLS := y
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FEATURE_DEFINES += -DCONFIG_GNUTLS
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else
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$(info Note: Building without GnuTLS support.)
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$(info $S Install gnutls-devel (RPM) or gnutls-dev (DEB) to fix.)
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endif
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ifeq ($(NO_LZ4)x$(call pkg-config-check,liblz4),xy)
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LIBS_FEATURES += -llz4
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export CONFIG_LZ4 := y
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FEATURE_DEFINES += -DCONFIG_LZ4
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else
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$(info Note: Building without LZ4 compression support.)
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endif
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ifeq ($(call pkg-config-check,libnftables),y)
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LIB_NFTABLES := $(shell $(PKG_CONFIG) --libs libnftables)
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ifeq ($(call try-cc,$(FEATURE_TEST_NFTABLES_LIB_API_0),$(LIB_NFTABLES)),true)
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LIBS_FEATURES += $(LIB_NFTABLES)
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FEATURE_DEFINES += -DCONFIG_HAS_NFTABLES_LIB_API_0
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else ifeq ($(call try-cc,$(FEATURE_TEST_NFTABLES_LIB_API_1),$(LIB_NFTABLES)),true)
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LIBS_FEATURES += $(LIB_NFTABLES)
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FEATURE_DEFINES += -DCONFIG_HAS_NFTABLES_LIB_API_1
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else
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$(info Warn: Building without nftables support (incompatible API version).)
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endif
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else
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$(info Warn: Building without nftables support.)
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$(info $S Install nftables-devel (RPM) or libnftables-dev (DEB) to fix.)
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endif
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export LIBS += $(LIBS_FEATURES)
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ifneq ($(PLUGINDIR),)
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FEATURE_DEFINES += -DCR_PLUGIN_DEFAULT="\"$(PLUGINDIR)\""
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endif
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CONFIG_FILE = .config
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$(CONFIG_FILE):
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touch $(CONFIG_FILE)
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ifeq ($(ARCH),x86)
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# CONFIG_COMPAT is only for x86 now, no need for compile-test other archs
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ifeq ($(call try-asm,$(FEATURE_TEST_X86_COMPAT)),true)
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export CONFIG_COMPAT := y
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FEATURE_DEFINES += -DCONFIG_COMPAT
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else
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$(info Note: Building without ia32 C/R, missing ia32 support in gcc.)
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$(info $S It may be related to missing gcc-multilib in your)
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$(info $S distribution, or you may have Debian with buggy toolchain.)
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$(info $S See https://github.com/checkpoint-restore/criu/issues/315.)
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endif
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endif
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export DEFINES += $(FEATURE_DEFINES)
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export CFLAGS += $(FEATURE_DEFINES)
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FEATURES_LIST := TCP_REPAIR PTRACE_PEEKSIGINFO \
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SETPROCTITLE_INIT TCP_REPAIR_WINDOW MEMFD_CREATE \
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OPENAT2 NO_LIBC_RSEQ_DEFS
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# $1 - config name
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define gen-feature-test
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ifeq ($$(call try-cc,$$(FEATURE_TEST_$(1)),$$(LIBS_FEATURES),$$(DEFINES)),true)
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$(Q) echo '#define CONFIG_HAS_$(1)' >> $$@
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else
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$(Q) echo '// CONFIG_HAS_$(1) is not set' >> $$@
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endif
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endef
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define config-header-rule
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$(CONFIG_HEADER): scripts/feature-tests.mak $(CONFIG_FILE)
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$(call msg-gen, $$@)
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$(Q) echo '#ifndef __CR_CONFIG_H__' > $$@
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$(Q) echo '#define __CR_CONFIG_H__' >> $$@
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$(Q) echo '' >> $$@
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$(call map,gen-feature-test,$(FEATURES_LIST))
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$(Q) cat $(CONFIG_FILE) | sed -n -e '/^[^#]/s/^/#define CONFIG_/p' >> $$@
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$(Q) echo '#endif /* __CR_CONFIG_H__ */' >> $$@
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endef
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$(eval $(config-header-rule))
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