mhd_check_cc_ldflag.m4 1.6 KB

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  1. # SYNOPSIS
  2. #
  3. # MHD_CHECK_CC_LDFLAG([FLAG-TO-TEST], [VARIABLE-TO-PREPEND-LDFLAGS],
  4. # [ACTION-IF-SUPPORTED], [ACTION-IF-NOT-SUPPORTED])
  5. #
  6. # DESCRIPTION
  7. #
  8. # This macro checks whether the specific compiler flag is supported.
  9. # The check is performing by prepending FLAG-TO-TEST to LDFLAGS, then
  10. # prepending value of VARIABLE-TO-PREPEND-LDFLAGS (if any) to LDFLAGS, and
  11. # then performing compile and link test. If test succeed without warnings,
  12. # then the flag is considered to be supported. Otherwise, if compile and link
  13. # without test flag can be done without any warning, the flag is considered
  14. # to be unsuppoted.
  15. #
  16. # Example usage:
  17. #
  18. # MHD_CHECK_CC_LDFLAG([-pie], [additional_LDFLAGS],
  19. # [additional_LDFLAGS="${additional_LDFLAGS} -pie"])
  20. #
  21. # Defined cache variable used in check so if any test will not work
  22. # correctly on some platform, user may simply fix it by giving cache
  23. # variable in configure parameters, for example:
  24. #
  25. # ./configure mhd_cv_cc_fl_supp__wshadow=no
  26. #
  27. # This simplify building from source on exotic platforms as patching
  28. # of configure.ac is not required to change results of tests.
  29. #
  30. # LICENSE
  31. #
  32. # Copyright (c) 2022 Karlson2k (Evgeny Grin) <k2k@narod.ru>
  33. #
  34. # Copying and distribution of this file, with or without modification, are
  35. # permitted in any medium without royalty provided the copyright notice
  36. # and this notice are preserved. This file is offered as-is, without any
  37. # warranty.
  38. #serial 1
  39. AC_DEFUN([MHD_CHECK_CC_LDFLAG],[dnl
  40. _MHD_CHECK_CC_XFLAG([$1],[$2],[$3],[$4],[[LDFLAGS]])dnl
  41. ])