Re: [Qemu-devel] 'make help' generate unrelated files

[Philippe Mathieu-Daudé]

On 07/29/2017 06:30 AM, Peter Maydell wrote:
> This happens because we have a rule that says
> "Makefile: $(GENERATED_FILES)"
> which is how we ensure that the autogenerated header
> files are always built before any .c file is compiled.
> The unfortunate side effect is that we rebuild the
> generated files before processing *any* makefile
> target, even those like 'clean' and 'help' that
> don't actually require them.
> 
> I did once have a go at fixing this some years back:
> http://patchwork.ozlabs.org/patch/365288/
> but as you'll note from the last comment by me
> in that mail thread it had a fatal flaw for
> the "build from clean" case...

It's now getting worse, compiling dtc + capstone :)

$ ./configure > /dev/null && time make help
  GEN     aarch64-softmmu/config-devices.mak.tmp
  GEN     aarch64-softmmu/config-devices.mak
  GEN     alpha-softmmu/config-devices.mak.tmp
  GEN     alpha-softmmu/config-devices.mak
  GEN     arm-softmmu/config-devices.mak.tmp
  GEN     arm-softmmu/config-devices.mak
  GEN     cris-softmmu/config-devices.mak.tmp
  GEN     cris-softmmu/config-devices.mak
  GEN     i386-softmmu/config-devices.mak.tmp
  GEN     i386-softmmu/config-devices.mak
  GEN     lm32-softmmu/config-devices.mak.tmp
  GEN     lm32-softmmu/config-devices.mak
  GEN     m68k-softmmu/config-devices.mak.tmp
  GEN     m68k-softmmu/config-devices.mak
  GEN     microblaze-softmmu/config-devices.mak.tmp
  GEN     microblaze-softmmu/config-devices.mak
  GEN     microblazeel-softmmu/config-devices.mak.tmp
  GEN     microblazeel-softmmu/config-devices.mak
  GEN     mips-softmmu/config-devices.mak.tmp
  GEN     mips-softmmu/config-devices.mak
  GEN     mips64-softmmu/config-devices.mak.tmp
  GEN     mips64-softmmu/config-devices.mak
  GEN     mips64el-softmmu/config-devices.mak.tmp
  GEN     mips64el-softmmu/config-devices.mak
  GEN     mipsel-softmmu/config-devices.mak.tmp
  GEN     mipsel-softmmu/config-devices.mak
  GEN     moxie-softmmu/config-devices.mak.tmp
  GEN     moxie-softmmu/config-devices.mak
  GEN     nios2-softmmu/config-devices.mak.tmp
  GEN     nios2-softmmu/config-devices.mak
  GEN     or1k-softmmu/config-devices.mak.tmp
  GEN     or1k-softmmu/config-devices.mak
  GEN     ppc-softmmu/config-devices.mak.tmp
  GEN     ppc-softmmu/config-devices.mak
  GEN     ppc64-softmmu/config-devices.mak.tmp
  GEN     ppc64-softmmu/config-devices.mak
  GEN     ppcemb-softmmu/config-devices.mak.tmp
  GEN     ppcemb-softmmu/config-devices.mak
  GEN     s390x-softmmu/config-devices.mak.tmp
  GEN     s390x-softmmu/config-devices.mak
  GEN     sh4-softmmu/config-devices.mak.tmp
  GEN     sh4-softmmu/config-devices.mak
  GEN     sh4eb-softmmu/config-devices.mak.tmp
  GEN     sh4eb-softmmu/config-devices.mak
  GEN     sparc-softmmu/config-devices.mak.tmp
  GEN     sparc-softmmu/config-devices.mak
  GEN     sparc64-softmmu/config-devices.mak.tmp
  GEN     sparc64-softmmu/config-devices.mak
  GEN     tricore-softmmu/config-devices.mak.tmp
  GEN     tricore-softmmu/config-devices.mak
  GEN     unicore32-softmmu/config-devices.mak.tmp
  GEN     unicore32-softmmu/config-devices.mak
  GEN     x86_64-softmmu/config-devices.mak.tmp
  GEN     x86_64-softmmu/config-devices.mak
  GEN     xtensa-softmmu/config-devices.mak.tmp
  GEN     xtensa-softmmu/config-devices.mak
  GEN     xtensaeb-softmmu/config-devices.mak.tmp
  GEN     xtensaeb-softmmu/config-devices.mak
  GEN     aarch64-linux-user/config-devices.mak.tmp
  GEN     aarch64-linux-user/config-devices.mak
  GEN     alpha-linux-user/config-devices.mak.tmp
  GEN     alpha-linux-user/config-devices.mak
  GEN     arm-linux-user/config-devices.mak.tmp
  GEN     arm-linux-user/config-devices.mak
  GEN     armeb-linux-user/config-devices.mak.tmp
  GEN     armeb-linux-user/config-devices.mak
  GEN     cris-linux-user/config-devices.mak.tmp
  GEN     cris-linux-user/config-devices.mak
  GEN     hppa-linux-user/config-devices.mak.tmp
  GEN     hppa-linux-user/config-devices.mak
  GEN     i386-linux-user/config-devices.mak.tmp
  GEN     i386-linux-user/config-devices.mak
  GEN     m68k-linux-user/config-devices.mak.tmp
  GEN     m68k-linux-user/config-devices.mak
  GEN     microblaze-linux-user/config-devices.mak.tmp
  GEN     microblaze-linux-user/config-devices.mak
  GEN     microblazeel-linux-user/config-devices.mak.tmp
  GEN     microblazeel-linux-user/config-devices.mak
  GEN     mips-linux-user/config-devices.mak.tmp
  GEN     mips-linux-user/config-devices.mak
  GEN     mips64-linux-user/config-devices.mak.tmp
  GEN     mips64-linux-user/config-devices.mak
  GEN     mips64el-linux-user/config-devices.mak.tmp
  GEN     mips64el-linux-user/config-devices.mak
  GEN     mipsel-linux-user/config-devices.mak.tmp
  GEN     mipsel-linux-user/config-devices.mak
  GEN     mipsn32-linux-user/config-devices.mak.tmp
  GEN     mipsn32-linux-user/config-devices.mak
  GEN     mipsn32el-linux-user/config-devices.mak.tmp
  GEN     mipsn32el-linux-user/config-devices.mak
  GEN     nios2-linux-user/config-devices.mak.tmp
  GEN     nios2-linux-user/config-devices.mak
  GEN     or1k-linux-user/config-devices.mak.tmp
  GEN     or1k-linux-user/config-devices.mak
  GEN     ppc-linux-user/config-devices.mak.tmp
  GEN     ppc-linux-user/config-devices.mak
  GEN     ppc64-linux-user/config-devices.mak.tmp
  GEN     ppc64-linux-user/config-devices.mak
  GEN     ppc64abi32-linux-user/config-devices.mak.tmp
  GEN     ppc64abi32-linux-user/config-devices.mak
  GEN     ppc64le-linux-user/config-devices.mak.tmp
  GEN     ppc64le-linux-user/config-devices.mak
  GEN     s390x-linux-user/config-devices.mak.tmp
  GEN     s390x-linux-user/config-devices.mak
  GEN     sh4-linux-user/config-devices.mak.tmp
  GEN     sh4-linux-user/config-devices.mak
  GEN     sh4eb-linux-user/config-devices.mak.tmp
  GEN     sh4eb-linux-user/config-devices.mak
  GEN     sparc-linux-user/config-devices.mak.tmp
  GEN     sparc-linux-user/config-devices.mak
  GEN     sparc32plus-linux-user/config-devices.mak.tmp
  GEN     sparc32plus-linux-user/config-devices.mak
  GEN     sparc64-linux-user/config-devices.mak.tmp
  GEN     sparc64-linux-user/config-devices.mak
  GEN     tilegx-linux-user/config-devices.mak.tmp
  GEN     tilegx-linux-user/config-devices.mak
  GEN     x86_64-linux-user/config-devices.mak.tmp
  GEN     x86_64-linux-user/config-devices.mak
  GEN     config-all-devices.mak
  GEN     config-host.h
mkdir -p dtc/libfdt
mkdir -p dtc/tests
         DEP dtc/tests/dumptrees.c
         DEP dtc/tests/trees.S
         DEP dtc/tests/testutils.c
         DEP dtc/tests/value-labels.c
         DEP dtc/tests/asm_tree_dump.c
         DEP dtc/tests/truncated_property.c
         DEP dtc/tests/check_path.c
         DEP dtc/tests/overlay_bad_fixup.c
         DEP dtc/tests/overlay.c
         DEP dtc/tests/subnode_iterate.c
         DEP dtc/tests/property_iterate.c
         DEP dtc/tests/integer-expressions.c
         DEP dtc/tests/utilfdt_test.c
         DEP dtc/tests/path_offset_aliases.c
         DEP dtc/tests/add_subnode_with_nops.c
         DEP dtc/tests/dtbs_equal_unordered.c
         DEP dtc/tests/dtb_reverse.c
         DEP dtc/tests/dtbs_equal_ordered.c
         DEP dtc/tests/extra-terminating-null.c
         DEP dtc/tests/incbin.c
         DEP dtc/tests/boot-cpuid.c
         DEP dtc/tests/phandle_format.c
         DEP dtc/tests/path-references.c
         DEP dtc/tests/references.c
         DEP dtc/tests/string_escapes.c
         DEP dtc/tests/propname_escapes.c
         DEP dtc/tests/appendprop2.c
         DEP dtc/tests/appendprop1.c
         DEP dtc/tests/del_node.c
         DEP dtc/tests/del_property.c
         DEP dtc/tests/setprop.c
         DEP dtc/tests/set_name.c
         DEP dtc/tests/rw_tree1.c
         DEP dtc/tests/open_pack.c
         DEP dtc/tests/nopulate.c
         DEP dtc/tests/mangle-layout.c
         DEP dtc/tests/move_and_save.c
         DEP dtc/tests/sw_tree1.c
         DEP dtc/tests/nop_node.c
         DEP dtc/tests/nop_property.c
         DEP dtc/tests/setprop_inplace.c
         DEP dtc/tests/stringlist.c
         DEP dtc/tests/addr_size_cells.c
         DEP dtc/tests/notfound.c
         DEP dtc/tests/sized_cells.c
         DEP dtc/tests/char_literal.c
         DEP dtc/tests/get_alias.c
         DEP dtc/tests/node_offset_by_compatible.c
         DEP dtc/tests/node_check_compatible.c
         DEP dtc/tests/node_offset_by_phandle.c
         DEP dtc/tests/node_offset_by_prop_value.c
         DEP dtc/tests/parent_offset.c
         DEP dtc/tests/supernode_atdepth_offset.c
         DEP dtc/tests/get_path.c
         DEP dtc/tests/get_phandle.c
         DEP dtc/tests/getprop.c
         DEP dtc/tests/get_name.c
         DEP dtc/tests/path_offset.c
         DEP dtc/tests/subnode_offset.c
         DEP dtc/tests/find_property.c
         DEP dtc/tests/root_node.c
         DEP dtc/tests/get_mem_rsv.c
         DEP dtc/libfdt/fdt_overlay.c
         DEP dtc/libfdt/fdt_addresses.c
         DEP dtc/libfdt/fdt_empty_tree.c
         DEP dtc/libfdt/fdt_strerror.c
         DEP dtc/libfdt/fdt_rw.c
         DEP dtc/libfdt/fdt_sw.c
         DEP dtc/libfdt/fdt_wip.c
         DEP dtc/libfdt/fdt_ro.c
         DEP dtc/libfdt/fdt.c
         DEP dtc/util.c
         DEP dtc/fdtput.c
         DEP dtc/fdtget.c
         DEP dtc/fdtdump.c
         LEX convert-dtsv0-lexer.lex.c
make[1]: flex: Command not found
         DEP dtc/srcpos.c
         BISON dtc-parser.tab.c
make[1]: bison: Command not found
         LEX dtc-lexer.lex.c
make[1]: flex: Command not found
         DEP dtc/treesource.c
         DEP dtc/livetree.c
         DEP dtc/fstree.c
         DEP dtc/flattree.c
         DEP dtc/dtc.c
         DEP dtc/data.c
         DEP dtc/checks.c
        CHK version_gen.h
        UPD version_gen.h
         DEP dtc/util.c
         LEX convert-dtsv0-lexer.lex.c
make[1]: flex: Command not found
         BISON dtc-parser.tab.c
make[1]: bison: Command not found
         LEX dtc-lexer.lex.c
make[1]: flex: Command not found
         LEX convert-dtsv0-lexer.lex.c
make[1]: flex: Command not found
         BISON dtc-parser.tab.c
make[1]: bison: Command not found
         LEX dtc-lexer.lex.c
make[1]: flex: Command not found
         CC libfdt/fdt.o
         CC libfdt/fdt_ro.o
         CC libfdt/fdt_wip.o
         CC libfdt/fdt_sw.o
         CC libfdt/fdt_rw.o
         CC libfdt/fdt_strerror.o
         CC libfdt/fdt_empty_tree.o
         CC libfdt/fdt_addresses.o
         CC libfdt/fdt_overlay.o
         AR libfdt/libfdt.a
ar: creating libfdt/libfdt.a
a - libfdt/fdt.o
a - libfdt/fdt_ro.o
a - libfdt/fdt_wip.o
a - libfdt/fdt_sw.o
a - libfdt/fdt_rw.o
a - libfdt/fdt_strerror.o
a - libfdt/fdt_empty_tree.o
a - libfdt/fdt_addresses.o
a - libfdt/fdt_overlay.o
  CC      cs.o
  CC      utils.o
  CC      SStream.o
  CC      MCInstrDesc.o
  CC      MCRegisterInfo.o
  CC      arch/ARM/ARMDisassembler.o
  CC      arch/ARM/ARMInstPrinter.o
  CC      arch/ARM/ARMMapping.o
  CC      arch/ARM/ARMModule.o
  CC      arch/AArch64/AArch64BaseInfo.o
  CC      arch/AArch64/AArch64Disassembler.o
  CC      arch/AArch64/AArch64InstPrinter.o
  CC      arch/AArch64/AArch64Mapping.o
  CC      arch/AArch64/AArch64Module.o
  CC      arch/Mips/MipsDisassembler.o
  CC      arch/Mips/MipsInstPrinter.o
  CC      arch/Mips/MipsMapping.o
  CC      arch/Mips/MipsModule.o
  CC      arch/PowerPC/PPCDisassembler.o
  CC      arch/PowerPC/PPCInstPrinter.o
  CC      arch/PowerPC/PPCMapping.o
  CC      arch/PowerPC/PPCModule.o
  CC      arch/Sparc/SparcDisassembler.o
  CC      arch/Sparc/SparcInstPrinter.o
  CC      arch/Sparc/SparcMapping.o
  CC      arch/Sparc/SparcModule.o
  CC      arch/SystemZ/SystemZDisassembler.o
  CC      arch/SystemZ/SystemZInstPrinter.o
  CC      arch/SystemZ/SystemZMapping.o
  CC      arch/SystemZ/SystemZModule.o
  CC      arch/SystemZ/SystemZMCTargetDesc.o
  CC      arch/X86/X86DisassemblerDecoder.o
  CC      arch/X86/X86Disassembler.o
  CC      arch/X86/X86IntelInstPrinter.o
  CC      arch/X86/X86ATTInstPrinter.o
  CC      arch/X86/X86Mapping.o
  CC      arch/X86/X86Module.o
  CC      arch/XCore/XCoreDisassembler.o
  CC      arch/XCore/XCoreInstPrinter.o
  CC      arch/XCore/XCoreMapping.o
  CC      arch/XCore/XCoreModule.o
  CC      MCInst.o
  AR      libcapstone.a
ar: creating capstone/libcapstone.a
  GEN     qemu-options.def
  GEN     qmp-commands.h
  GEN     qapi-types.h
  GEN     qapi-visit.h
  GEN     qapi-event.h
  GEN     qmp-marshal.c
  GEN     qapi-types.c
  GEN     qapi-visit.c
  GEN     qapi-event.c
  GEN     qmp-introspect.h
  GEN     qmp-introspect.c
  GEN     trace/generated-tcg-tracers.h
  GEN     trace/generated-helpers-wrappers.h
  GEN     trace/generated-helpers.h
  GEN     trace/generated-helpers.c
  GEN     module_block.h
  GEN     ui/input-keymap-linux-to-qcode.c
  GEN     ui/input-keymap-qcode-to-qnum.c
  GEN     ui/input-keymap-qnum-to-qcode.c
  GEN     tests/test-qapi-types.h
  GEN     tests/test-qapi-visit.h
  GEN     tests/test-qmp-commands.h
  GEN     tests/test-qapi-event.h
  GEN     tests/test-qmp-introspect.h
  GEN     trace-root.h
  GEN     util/trace.h
  GEN     crypto/trace.h
  GEN     io/trace.h
  GEN     migration/trace.h
  GEN     block/trace.h
  GEN     chardev/trace.h
  GEN     hw/block/trace.h
  GEN     hw/block/dataplane/trace.h
  GEN     hw/char/trace.h
  GEN     hw/intc/trace.h
  GEN     hw/net/trace.h
  GEN     hw/virtio/trace.h
  GEN     hw/audio/trace.h
  GEN     hw/misc/trace.h
  GEN     hw/usb/trace.h
  GEN     hw/scsi/trace.h
  GEN     hw/nvram/trace.h
  GEN     hw/display/trace.h
  GEN     hw/input/trace.h
  GEN     hw/timer/trace.h
  GEN     hw/dma/trace.h
  GEN     hw/sparc/trace.h
  GEN     hw/sd/trace.h
  GEN     hw/isa/trace.h
  GEN     hw/mem/trace.h
  GEN     hw/i386/trace.h
  GEN     hw/i386/xen/trace.h
  GEN     hw/9pfs/trace.h
  GEN     hw/ppc/trace.h
  GEN     hw/pci/trace.h
  GEN     hw/s390x/trace.h
  GEN     hw/vfio/trace.h
  GEN     hw/acpi/trace.h
  GEN     hw/arm/trace.h
  GEN     hw/alpha/trace.h
  GEN     hw/xen/trace.h
  GEN     hw/ide/trace.h
  GEN     ui/trace.h
  GEN     audio/trace.h
  GEN     net/trace.h
  GEN     target/arm/trace.h
  GEN     target/i386/trace.h
  GEN     target/mips/trace.h
  GEN     target/sparc/trace.h
  GEN     target/s390x/trace.h
  GEN     target/ppc/trace.h
  GEN     qom/trace.h
  GEN     linux-user/trace.h
  GEN     qapi/trace.h
  GEN     accel/tcg/trace.h
  GEN     accel/kvm/trace.h
  GEN     nbd/trace.h
  GEN     scsi/trace.h
  GEN     trace-root.c
  GEN     util/trace.c
  GEN     crypto/trace.c
  GEN     io/trace.c
  GEN     migration/trace.c
  GEN     block/trace.c
  GEN     chardev/trace.c
  GEN     hw/block/trace.c
  GEN     hw/block/dataplane/trace.c
  GEN     hw/char/trace.c
  GEN     hw/intc/trace.c
  GEN     hw/net/trace.c
  GEN     hw/virtio/trace.c
  GEN     hw/audio/trace.c
  GEN     hw/misc/trace.c
  GEN     hw/usb/trace.c
  GEN     hw/scsi/trace.c
  GEN     hw/nvram/trace.c
  GEN     hw/display/trace.c
  GEN     hw/input/trace.c
  GEN     hw/timer/trace.c
  GEN     hw/dma/trace.c
  GEN     hw/sparc/trace.c
  GEN     hw/sd/trace.c
  GEN     hw/isa/trace.c
  GEN     hw/mem/trace.c
  GEN     hw/i386/trace.c
  GEN     hw/i386/xen/trace.c
  GEN     hw/9pfs/trace.c
  GEN     hw/ppc/trace.c
  GEN     hw/pci/trace.c
  GEN     hw/s390x/trace.c
  GEN     hw/vfio/trace.c
  GEN     hw/acpi/trace.c
  GEN     hw/arm/trace.c
  GEN     hw/alpha/trace.c
  GEN     hw/xen/trace.c
  GEN     hw/ide/trace.c
  GEN     ui/trace.c
  GEN     audio/trace.c
  GEN     net/trace.c
  GEN     target/arm/trace.c
  GEN     target/i386/trace.c
  GEN     target/mips/trace.c
  GEN     target/sparc/trace.c
  GEN     target/s390x/trace.c
  GEN     target/ppc/trace.c
  GEN     qom/trace.c
  GEN     linux-user/trace.c
  GEN     qapi/trace.c
  GEN     accel/tcg/trace.c
  GEN     accel/kvm/trace.c
  GEN     nbd/trace.c
  GEN     scsi/trace.c
mkdir -p dtc/libfdt
mkdir -p dtc/tests
         LEX convert-dtsv0-lexer.lex.c
make[1]: flex: Command not found
         BISON dtc-parser.tab.c
make[1]: bison: Command not found
         LEX dtc-lexer.lex.c
make[1]: flex: Command not found
make[1]: 'capstone/libcapstone.a' is up to date.
Generic targets:
  all             - Build all
  dir/file.o      - Build specified target only
  install         - Install QEMU, documentation and tools
  ctags/TAGS      - Generate tags file for editors
  cscope          - Generate cscope index

Architecture specific targets:
  subdir-aarch64-softmmu         - Build for aarch64-softmmu
  subdir-alpha-softmmu           - Build for alpha-softmmu
  subdir-arm-softmmu             - Build for arm-softmmu
  subdir-cris-softmmu            - Build for cris-softmmu
  subdir-i386-softmmu            - Build for i386-softmmu
  subdir-lm32-softmmu            - Build for lm32-softmmu
  subdir-m68k-softmmu            - Build for m68k-softmmu
  subdir-microblaze-softmmu      - Build for microblaze-softmmu
  subdir-microblazeel-softmmu    - Build for microblazeel-softmmu
  subdir-mips-softmmu            - Build for mips-softmmu
  subdir-mips64-softmmu          - Build for mips64-softmmu
  subdir-mips64el-softmmu        - Build for mips64el-softmmu
  subdir-mipsel-softmmu          - Build for mipsel-softmmu
  subdir-moxie-softmmu           - Build for moxie-softmmu
  subdir-nios2-softmmu           - Build for nios2-softmmu
  subdir-or1k-softmmu            - Build for or1k-softmmu
  subdir-ppc-softmmu             - Build for ppc-softmmu
  subdir-ppc64-softmmu           - Build for ppc64-softmmu
  subdir-ppcemb-softmmu          - Build for ppcemb-softmmu
  subdir-s390x-softmmu           - Build for s390x-softmmu
  subdir-sh4-softmmu             - Build for sh4-softmmu
  subdir-sh4eb-softmmu           - Build for sh4eb-softmmu
  subdir-sparc-softmmu           - Build for sparc-softmmu
  subdir-sparc64-softmmu         - Build for sparc64-softmmu
  subdir-tricore-softmmu         - Build for tricore-softmmu
  subdir-unicore32-softmmu       - Build for unicore32-softmmu
  subdir-x86_64-softmmu          - Build for x86_64-softmmu
  subdir-xtensa-softmmu          - Build for xtensa-softmmu
  subdir-xtensaeb-softmmu        - Build for xtensaeb-softmmu
  subdir-aarch64-linux-user      - Build for aarch64-linux-user
  subdir-alpha-linux-user        - Build for alpha-linux-user
  subdir-arm-linux-user          - Build for arm-linux-user
  subdir-armeb-linux-user        - Build for armeb-linux-user
  subdir-cris-linux-user         - Build for cris-linux-user
  subdir-hppa-linux-user         - Build for hppa-linux-user
  subdir-i386-linux-user         - Build for i386-linux-user
  subdir-m68k-linux-user         - Build for m68k-linux-user
  subdir-microblaze-linux-user   - Build for microblaze-linux-user
  subdir-microblazeel-linux-user - Build for microblazeel-linux-user
  subdir-mips-linux-user         - Build for mips-linux-user
  subdir-mips64-linux-user       - Build for mips64-linux-user
  subdir-mips64el-linux-user     - Build for mips64el-linux-user
  subdir-mipsel-linux-user       - Build for mipsel-linux-user
  subdir-mipsn32-linux-user      - Build for mipsn32-linux-user
  subdir-mipsn32el-linux-user    - Build for mipsn32el-linux-user
  subdir-nios2-linux-user        - Build for nios2-linux-user
  subdir-or1k-linux-user         - Build for or1k-linux-user
  subdir-ppc-linux-user          - Build for ppc-linux-user
  subdir-ppc64-linux-user        - Build for ppc64-linux-user
  subdir-ppc64abi32-linux-user   - Build for ppc64abi32-linux-user
  subdir-ppc64le-linux-user      - Build for ppc64le-linux-user
  subdir-s390x-linux-user        - Build for s390x-linux-user
  subdir-sh4-linux-user          - Build for sh4-linux-user
  subdir-sh4eb-linux-user        - Build for sh4eb-linux-user
  subdir-sparc-linux-user        - Build for sparc-linux-user
  subdir-sparc32plus-linux-user  - Build for sparc32plus-linux-user
  subdir-sparc64-linux-user      - Build for sparc64-linux-user
  subdir-tilegx-linux-user       - Build for tilegx-linux-user
  subdir-x86_64-linux-user       - Build for x86_64-linux-user

Cleaning targets:
  clean           - Remove most generated files but keep the config
  distclean       - Remove all generated files
  dist            - Build a distributable tarball

Test targets:
  check           - Run all tests (check-help for details)
  docker          - Help about targets running tests inside Docker
containers
  vm-test         - Help about targets running tests inside VM

Documentation targets:
  html info pdf txt
                  - Build documentation in specified format

  make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build

real    0m33.636s
user    0m30.637s
sys     0m3.285s