scripts/mk/buildflags.mk

   1 # This Makefile fragment (since dpkg 1.16.1) defines the following variables:
   2 #
   3 #   ASFLAGS: flags for the assembler (since 1.21.0).
   4 #   CFLAGS: flags for the C compiler.
   5 #   CPPFLAGS: flags for the C preprocessor.
   6 #   CXXFLAGS: flags for the C++ compiler.
   7 #   OBJCFLAGS: flags for the Objective C compiler.
   8 #   OBJCXXFLAGS: flags for the Objective C++ compiler.
   9 #   GCJFLAGS: flags for the GNU Java compiler.
  10 #   DFLAGS: flags for the D compiler.
  11 #   FFLAGS: flags for the Fortran 77 compiler.
  12 #   FCFLAGS: flags for the Fortran 9x compiler.
  13 #   LDFLAGS: flags for the linker.
  14 #
  15 # You can also export them in the environment by setting
  16 # DPKG_EXPORT_BUILDFLAGS to a non-empty value.
  17 #
  18 # This list is kept in sync with the default set of flags returned
  19 # by dpkg-buildflags.
  20
  21 dpkg_lazy_eval ?= $$(or $$(value DPKG_CACHE_$(1)),$$(eval DPKG_CACHE_$(1) := $$(shell $(2)))$$(value DPKG_CACHE_$(1)))
  22
  23 DPKG_BUILDFLAGS_LIST = ASFLAGS CFLAGS CPPFLAGS CXXFLAGS OBJCFLAGS OBJCXXFLAGS \
  24                        GCJFLAGS DFLAGS FFLAGS FCFLAGS LDFLAGS
  25
  26 define dpkg_buildflags_export_envvar
  27   ifdef $(1)
  28     DPKG_BUILDFLAGS_EXPORT_ENVVAR += $(1)="$$(value $(1))"
  29   endif
  30 endef
  31
  32 $(eval $(call dpkg_buildflags_export_envvar,DEB_BUILD_OPTIONS))
  33 $(eval $(call dpkg_buildflags_export_envvar,DEB_BUILD_MAINT_OPTIONS))
  34 $(eval $(call dpkg_buildflags_export_envvar,DEB_BUILD_PATH))
  35 $(foreach flag,$(DPKG_BUILDFLAGS_LIST),\
  36   $(foreach operation,SET STRIP APPEND PREPEND,\
  37     $(eval $(call dpkg_buildflags_export_envvar,DEB_$(flag)_MAINT_$(operation)))))
  38
  39 dpkg_buildflags_setvar = $(1) = $(call dpkg_lazy_eval,$(1),$(DPKG_BUILDFLAGS_EXPORT_ENVVAR) dpkg-buildflags --get $(1))
  40
  41 $(foreach flag,$(DPKG_BUILDFLAGS_LIST),\
  42   $(eval $(call dpkg_buildflags_setvar,$(flag))))
  43
  44 ifdef DPKG_EXPORT_BUILDFLAGS
  45   export $(DPKG_BUILDFLAGS_LIST)
  46 endif