Fork of the vendor (Boundary Devices) u-boot for Reform 2, with minor tweaks. The goal is to migrate to mainstream u-boot or barebox ASAP. The main impediment so far is the 4GB RAM config.
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  1. # SPDX-License-Identifier: GPL-2.0
  2. # ==========================================================================
  3. # Building binaries on the host system
  4. # Binaries are used during the compilation of the kernel, for example
  5. # to preprocess a data file.
  6. #
  7. # Both C and C++ are supported, but preferred language is C for such utilities.
  8. #
  9. # Sample syntax (see Documentation/kbuild/makefiles.txt for reference)
  10. # hostprogs-y := bin2hex
  11. # Will compile bin2hex.c and create an executable named bin2hex
  12. #
  13. # hostprogs-y := lxdialog
  14. # lxdialog-objs := checklist.o lxdialog.o
  15. # Will compile lxdialog.c and checklist.c, and then link the executable
  16. # lxdialog, based on checklist.o and lxdialog.o
  17. #
  18. # hostprogs-y := qconf
  19. # qconf-cxxobjs := qconf.o
  20. # qconf-objs := menu.o
  21. # Will compile qconf as a C++ program, and menu as a C program.
  22. # They are linked as C++ code to the executable qconf
  23. __hostprogs := $(sort $(hostprogs-y) $(hostprogs-m))
  24. # C code
  25. # Executables compiled from a single .c file
  26. host-csingle := $(foreach m,$(__hostprogs), \
  27. $(if $($(m)-objs)$($(m)-cxxobjs)$($(m)-sharedobjs),,$(m)))
  28. # C executables linked based on several .o files
  29. host-cmulti := $(foreach m,$(__hostprogs),\
  30. $(if $($(m)-cxxobjs),,$(if $($(m)-objs),$(m))))
  31. # Shared object libraries
  32. host-shared := $(foreach m,$(__hostprogs),\
  33. $(if $($(m)-sharedobjs),$(m))))
  34. # Object (.o) files compiled from .c files
  35. host-cobjs := $(sort $(foreach m,$(__hostprogs),$($(m)-objs)))
  36. # C++ code
  37. # C++ executables compiled from at least one .cc file
  38. # and zero or more .c files
  39. host-cxxmulti := $(foreach m,$(__hostprogs),$(if $($(m)-cxxobjs),$(m)))
  40. # C++ Object (.o) files compiled from .cc files
  41. host-cxxobjs := $(sort $(foreach m,$(host-cxxmulti),$($(m)-cxxobjs)))
  42. # output directory for programs/.o files
  43. # hostprogs-y := tools/build may have been specified.
  44. # Retrieve also directory of .o files from prog-objs or prog-cxxobjs notation
  45. host-objdirs := $(dir $(__hostprogs) $(host-cobjs) $(host-cxxobjs))
  46. host-objdirs := $(strip $(sort $(filter-out ./,$(host-objdirs))))
  47. __hostprogs := $(addprefix $(obj)/,$(__hostprogs))
  48. host-csingle := $(addprefix $(obj)/,$(host-csingle))
  49. host-cmulti := $(addprefix $(obj)/,$(host-cmulti))
  50. host-cobjs := $(addprefix $(obj)/,$(host-cobjs))
  51. host-cxxmulti := $(addprefix $(obj)/,$(host-cxxmulti))
  52. host-cxxobjs := $(addprefix $(obj)/,$(host-cxxobjs))
  53. host-shared := $(addprefix $(obj)/,$(host-shared))
  54. host-objdirs := $(addprefix $(obj)/,$(host-objdirs))
  55. obj-dirs += $(host-objdirs)
  56. #####
  57. # Handle options to gcc. Support building with separate output directory
  58. _hostc_flags = $(HOSTCFLAGS) $(HOST_EXTRACFLAGS) \
  59. $(HOSTCFLAGS_$(basetarget).o)
  60. _hostcxx_flags = $(HOSTCXXFLAGS) $(HOST_EXTRACXXFLAGS) \
  61. $(HOSTCXXFLAGS_$(basetarget).o)
  62. ifeq ($(KBUILD_SRC),)
  63. __hostc_flags = $(_hostc_flags)
  64. __hostcxx_flags = $(_hostcxx_flags)
  65. else
  66. __hostc_flags = -I$(obj) $(call flags,_hostc_flags)
  67. __hostcxx_flags = -I$(obj) $(call flags,_hostcxx_flags)
  68. endif
  69. hostc_flags = -Wp,-MD,$(depfile) $(__hostc_flags)
  70. hostcxx_flags = -Wp,-MD,$(depfile) $(__hostcxx_flags)
  71. #####
  72. # Compile programs on the host
  73. # Create executable from a single .c file
  74. # host-csingle -> Executable
  75. quiet_cmd_host-csingle = HOSTCC $@
  76. cmd_host-csingle = $(HOSTCC) $(hostc_flags) -o $@ $< \
  77. $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
  78. $(host-csingle): $(obj)/%: $(src)/%.c FORCE
  79. $(call if_changed_dep,host-csingle)
  80. # Link an executable based on list of .o files, all plain c
  81. # host-cmulti -> executable
  82. quiet_cmd_host-cmulti = HOSTLD $@
  83. cmd_host-cmulti = $(HOSTCC) $(HOSTLDFLAGS) -o $@ \
  84. $(addprefix $(obj)/,$($(@F)-objs)) \
  85. $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
  86. $(host-cmulti): FORCE
  87. $(call if_changed,host-cmulti)
  88. $(call multi_depend, $(host-cmulti), , -objs)
  89. # Create .o file from a single .c file
  90. # host-cobjs -> .o
  91. quiet_cmd_host-cobjs = HOSTCC $@
  92. cmd_host-cobjs = $(HOSTCC) $(hostc_flags) -c -o $@ $<
  93. $(host-cobjs): $(obj)/%.o: $(src)/%.c FORCE
  94. $(call if_changed_dep,host-cobjs)
  95. # Link an executable based on list of .o files, a mixture of .c and .cc
  96. # host-cxxmulti -> executable
  97. quiet_cmd_host-cxxmulti = HOSTLD $@
  98. cmd_host-cxxmulti = $(HOSTCXX) $(HOSTLDFLAGS) -o $@ \
  99. $(foreach o,objs cxxobjs,\
  100. $(addprefix $(obj)/,$($(@F)-$(o)))) \
  101. $(HOST_LOADLIBES) $(HOSTLOADLIBES_$(@F))
  102. $(host-cxxmulti): FORCE
  103. $(call if_changed,host-cxxmulti)
  104. $(call multi_depend, $(host-cxxmulti), , -objs -cxxobjs)
  105. # Create .o file from a single .cc (C++) file
  106. quiet_cmd_host-cxxobjs = HOSTCXX $@
  107. cmd_host-cxxobjs = $(HOSTCXX) $(hostcxx_flags) -c -o $@ $<
  108. $(host-cxxobjs): $(obj)/%.o: $(src)/%.cc FORCE
  109. $(call if_changed_dep,host-cxxobjs)
  110. targets += $(host-csingle) $(host-cmulti) $(host-cobjs)\
  111. $(host-cxxmulti) $(host-cxxobjs) $(host-shared)