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Re: [PATCH] configure: use AC_SEARCH_LIBS instead of AC_CHECK_LIB

From
Paolo Bonzini <bonzini@gnu.org>
Date
Jul 21, 2009, 15:20 UTC
Message-ID
<4A65DCB9.3030207@gnu.org>
In-Reply-To
<6WnEB0at_uuAu9kicWjrHLsBbTv58WtCNOANkKzk-SqTgqjuWyh8WA@cipher.nrlssc.navy.mil>
Show 5 quoted lines
> With AC_SEARCH_LIBS, which of [action-if-found] or [action-if-not-found]
> is executed if the function is found in the standard c library i.e. "calling
> `AC_LINK_IFELSE([AC_LANG_CALL([], [function])])' first with no libraries"?
> Is the answer neither?  If the answer is [action-if-found], won't the
> NEEDS_LIBGEN=YesPlease be set when the function is found in the c library?

It evaluates the action-if-found and adds nothing to LIBS. Instead, if it is found in a library, it evaluates the action-if-found after adding (actually prepending) -lBLAH to LIBS.

Paolo
Previous: Brandon CaseyNext: Brandon Casey
Message 18 of 32 in “[test failure] t4114 binary file becomes symlink”
  1. Nicolas SebrechtJul 18, 2009
  2. Jeff KingJul 18, 2009
  3. [test failure] Re: t4114 binary file becomes symlinkNicolas Sebrecht, Jul 18, 2009
  4. Jeff KingJul 18, 2009
  5. Junio C HamanoJul 18, 2009
  6. [test failure] Re: t4114 binary file becomes symlinkNicolas Sebrecht, Jul 18, 2009
  7. Linus TorvaldsJul 18, 2009
  8. Johannes SixtJul 18, 2009
  9. [test failure] Re: t4114 binary file becomes symlinkNicolas Sebrecht, Jul 18, 2009
  10. [test failure] Re: t4114 binary file becomes symlinkNicolas Sebrecht, Jul 18, 2009
  11. ./configure misdetects SNPRINTF_RETURNS_BOGUS (was: [test failure] t4114 binary file becomes symlink)Jakub Narebski, Jul 19, 2009
  12. configure: use AC_SEARCH_LIBS instead of AC_CHECK_LIBNicolas Sebrecht, Jul 19, 2009
  13. Re: configure: use AC_SEARCH_LIBS instead of AC_CHECK_LIBNicolas Sebrecht, Jul 19, 2009
  14. Junio C HamanoJul 19, 2009
  15. Eric BlakeJul 19, 2009
  16. Brandon CaseyJul 21, 2009
  17. Brandon CaseyJul 21, 2009
  18. Paolo BonziniJul 21, 2009
  19. Brandon CaseyJul 21, 2009
  20. configure.ac: rework/fix the NEEDS_RESOLV and NEEDS_LIBGEN testsBrandon Casey, Jul 21, 2009
  21. Junio C HamanoJul 21, 2009
  22. Brandon CaseyJul 22, 2009
  23. config.mak.in: continue fixing NEEDS_LIBGEN autoconfigure featureBrandon Casey, Jul 22, 2009
  24. Junio C HamanoJul 22, 2009
  25. Brandon CaseyJul 23, 2009
  26. Johannes SixtJul 18, 2009
  27. Jeff KingJul 18, 2009
  28. [test failure] Re: t4114 binary file becomes symlinkNicolas Sebrecht, Jul 18, 2009
  29. Johannes SixtJul 19, 2009
  30. Jeff KingJul 20, 2009
  31. Johannes SixtJul 20, 2009
  32. Linus TorvaldsJul 20, 2009

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