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: / usr / share / dpkg /
Filename : buildflags.mk
back
# This Makefile fragment (since dpkg 1.16.1) defines the following host
# variables:
#
#   ASFLAGS: flags for the host assembler (since 1.21.0).
#   CFLAGS: flags for the host C compiler.
#   CPPFLAGS: flags for the host C preprocessor.
#   CXXFLAGS: flags for the host C++ compiler.
#   OBJCFLAGS: flags for the host Objective C compiler.
#   OBJCXXFLAGS: flags for the host Objective C++ compiler.
#   DFLAGS: flags for the host D compiler.
#   FFLAGS: flags for the host Fortran 77 compiler.
#   FCFLAGS: flags for the host Fortran 9x compiler.
#   LDFLAGS: flags for the host linker.
#   RUSTFLAGS: flags for the host Rust compiler (since 1.22.6ubuntu12).
#
# And the following variables for the build tools (since dpkg 1.22.1):
#
#   ASFLAGS_FOR_BUILD: flags for the build assembler.
#   CFLAGS_FOR_BUILD: flags for the build C compiler.
#   CPPFLAGS_FOR_BUILD: flags for the build C preprocessor.
#   CXXFLAGS_FOR_BUILD: flags for the build C++ compiler.
#   OBJCFLAGS_FOR_BUILD: flags for the build Objective C compiler.
#   OBJCXXFLAGS_FOR_BUILD: flags for the build Objective C++ compiler.
#   DFLAGS_FOR_BUILD: flags for the build D compiler.
#   FFLAGS_FOR_BUILD: flags for the build Fortran 77 compiler.
#   FCFLAGS_FOR_BUILD: flags for the build Fortran 9x compiler.
#   LDFLAGS_FOR_BUILD: flags for the build linker.
#   RUSTFLAGS_FOR_BUILD: flags for the build Rust compiler (since 1.22.6ubuntu12).
#
# You can also export them in the environment by setting
# DPKG_EXPORT_BUILDFLAGS to a non-empty value.
#
# Since dpkg 1.22.6ubuntu14 it exports following environment variables
# needed for the ELF package metadata:
#
#   DEB_BUILD_OS_RELEASE_ID
#   DEB_HOST_ARCH
#   DEB_SOURCE
#   DEB_VERSION
#   ELF_PACKAGE_METADATA (1.22.6ubuntu15)
#

ifndef dpkg_buildflags_mk_included
dpkg_buildflags_mk_included = yes

# This list is kept in sync with the default set of flags returned
# by dpkg-buildflags.

ifndef dpkg_datadir
  dpkg_datadir := $(dir $(lastword $(MAKEFILE_LIST)))
endif

dpkg_lazy_eval ?= $$(or $$(value DPKG_CACHE_$(1)),$$(eval DPKG_CACHE_$(1) := $$(shell $(2)))$$(value DPKG_CACHE_$(1)))

DPKG_BUILDFLAGS_LIST := $(foreach var,\
  ASFLAGS \
  CFLAGS \
  CPPFLAGS \
  CXXFLAGS \
  OBJCFLAGS \
  OBJCXXFLAGS \
  DFLAGS \
  FFLAGS \
  FCFLAGS \
  LDFLAGS \
  RUSTFLAGS \
  ,$(var) $(var)_FOR_BUILD)

define dpkg_buildflags_export_envvar
  ifdef $(1)
    DPKG_BUILDFLAGS_EXPORT_ENVVAR += $(1)="$$(value $(1))"
  endif
endef

$(eval $(call dpkg_buildflags_export_envvar,DEB_BUILD_OPTIONS))
$(eval $(call dpkg_buildflags_export_envvar,DEB_BUILD_MAINT_OPTIONS))
$(eval $(call dpkg_buildflags_export_envvar,DEB_BUILD_PATH))
$(eval $(call dpkg_buildflags_export_envvar,DEB_BUILD_DEBUGPATH))
$(foreach flag,$(DPKG_BUILDFLAGS_LIST),\
  $(foreach operation,SET STRIP APPEND PREPEND,\
    $(eval $(call dpkg_buildflags_export_envvar,DEB_$(flag)_MAINT_$(operation)))))

dpkg_buildflags_setvar = $(1) = $(call dpkg_lazy_eval,$(1),$(DPKG_BUILDFLAGS_EXPORT_ENVVAR) dpkg-buildflags --get $(1))

$(foreach flag,$(DPKG_BUILDFLAGS_LIST),\
  $(eval $(call dpkg_buildflags_setvar,$(flag))))

ifdef DPKG_EXPORT_BUILDFLAGS
  export $(DPKG_BUILDFLAGS_LIST)
endif

ifndef DEB_BUILD_OS_RELEASE_ID
  DEB_BUILD_OS_RELEASE_ID=$(shell . /usr/lib/os-release && echo $$ID)
endif

ifndef DEB_HOST_ARCH
  include $(dpkg_datadir)/architecture.mk
endif

ifneq (,$(filter undefined,$(foreach v,DEB_SOURCE DEB_VERSION,$(origin $(v)))))
  include $(dpkg_datadir)/pkg-info.mk
endif

# These variables are needed for the ELF package metadata (set via LDFLAGS)
export DEB_BUILD_OS_RELEASE_ID
export DEB_HOST_ARCH
export DEB_SOURCE
export DEB_VERSION

# complete package metadata information, picked up by GCC and clang
ifeq (,$(ELF_PACKAGE_METADATA))
  SPACE = $(EMPTY) $(EMPTY)
  COMMA = ,
  ELF_PACKAGE_METADATA := $(subst $(SPACE),,{ \
        "type":"deb", \
        "os":"$(shell awk -F= '/^ID=/ {print $$2}' /etc/os-release)", \
        "name":"$(DEB_SOURCE)", \
        "version":"$(DEB_VERSION)", \
        "architecture":"$(DEB_HOST_ARCH)" \
        $(if $(DEB_BUILD_DEBUG_INFO_URL),$(COMMA)"debugInfoUrl":"$(DEB_BUILD_DEBUG_INFO_URL)") \
    })
  undefine SPACE
  undefine COMMA
  export ELF_PACKAGE_METADATA
endif

endif # dpkg_buildflags_mk_included