build-sys: add check for gperf lookup function signature (#5055)

gperf-3.1 generates lookup functions that take a size_t length
parameter instead of unsigned int. Test for this at configure time.

Fixes: https://github.com/systemd/systemd/issues/5039
(cherry picked from commit c9f7b4d356a453a01aa77a6bb74ca7ef49732c08)
19 files changed
tree: 2e112806ca129084c806f7359f9040eb7e5792cb
  1. .dir-locals.el
  2. .editorconfig
  3. .gitattributes
  4. .github/
  5. .gitignore
  6. .mailmap
  7. .travis.yml
  8. .vimrc
  9. .ycm_extra_conf.py
  10. CODING_STYLE
  11. DISTRO_PORTING
  12. HACKING
  13. LICENSE.GPL2
  14. LICENSE.LGPL2.1
  15. Makefile-man.am
  16. Makefile.am
  17. NEWS
  18. README
  19. README.md
  20. TODO
  21. autogen.sh
  22. catalog/
  23. coccinelle/
  24. configure.ac
  25. docs/
  26. factory/etc/
  27. hwdb/
  28. m4/
  29. man/
  30. mkosi.build
  31. mkosi.default
  32. network/
  33. po/
  34. rules/
  35. shell-completion/
  36. src/
  37. sysctl.d/
  38. system-preset/
  39. sysusers.d/
  40. test/
  41. tmpfiles.d/
  42. tools/
  43. units/
  44. xorg/
README.md

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