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  1. 14 Feb, 2011 1 commit
    • Ralf Wildenhues's avatar
      configure: use AC_LANG_PROGRAM consistently · 1e58dba1
      Ralf Wildenhues authored
      Avoid warnings from Autoconf 2.68 about missing use of AC_LANG_PROGRAM
      and friends.
      
      Quoting autoconf-2.68/NEWS:
      
        ** The macros AC_PREPROC_IFELSE, AC_COMPILE_IFELSE, AC_LINK_IFELSE, and
           AC_RUN_IFELSE now warn if the first argument failed to use
           AC_LANG_SOURCE or AC_LANG_PROGRAM to generate the conftest file
           contents.  A new macro AC_LANG_DEFINES_PROVIDED exists if you have
           a compelling reason why you cannot use AC_LANG_SOURCE but must
           avoid the warning.
      
      The underlying reason for that change is that AC_LANG_{SOURCE,PROGRAM}
      take care to supply the previously computed set of #defines (and
      include standard headers if so desired) for preprocessed languages
      like C and C++.
      
      In some cases, AC_LANG_PROGRAM is already used but not sufficiently
      m4-quoted, so we just need to add another set of [quotes] to prevent
      the autoconf warning from being triggered bogusly.  Quoting all
      arguments (except when calling special macros that need to be expanded
      before recursion) is better style, anyway.  These and more rules are
      described in detail in 'info Autoconf "Programming in M4"'.
      
      No change in the resulting config.mak.autogen after running
      ./configure intended.
      Signed-off-by: default avatarRalf Wildenhues <[email protected]>
      Signed-off-by: default avatarJonathan Nieder <[email protected]>
      Signed-off-by: default avatarJunio C Hamano <[email protected]>
      1e58dba1
  2. 01 Jun, 2010 1 commit