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    Contents of /trunk/ghc/patches/ghc-6.12.2-libm-detection.patch

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    Revision 1041 - (show annotations) (download)
    Wed May 5 16:59:42 2010 UTC (14 years ago) by niro
    File size: 1791 byte(s) 
    patches for ghc
    1 Fri Dec 4 23:40:12 EET 2009 Sergei Trofimovich <slyfox@inbox.ru>
    2 * configure.ac: fix libm checks (Trac #3730)
    3
    4 libbfd pulled libm as dependency and broke LIBM= detection.
    5
    6 Patch moves libm in library tests as early as possible.
    7 Thanks to asuffield for suggesting such a simple fix.
    8 Thanks to Roie Kerstein and Renato Gallo for finding
    9 and tracking down the issue.
    10
    11 http://bugs.gentoo.org/show_bug.cgi?id=293208
    12 http://hackage.haskell.org/trac/ghc/ticket/3730
    13 diff -rN -u old-ghc/configure.ac new-ghc/configure.ac
    14 --- old-ghc/configure.ac 2009-12-04 23:51:06.135605014 +0200
    15 +++ new-ghc/configure.ac 2009-12-04 23:51:06.344604339 +0200
    16 @@ -713,18 +713,22 @@
    17 AC_DEFINE([HAVE_MINGWEX], [1], [Define to 1 if you have the mingwex library.])
    18 fi
    19
    20 -dnl ** check whether this machine has BFD and liberty installed (used for debugging)
    21 -dnl the order of these tests matters: bfd needs liberty
    22 -AC_CHECK_LIB(iberty, xmalloc)
    23 -AC_CHECK_LIB(bfd, bfd_init)
    24 -
    25 dnl ** check for math library
    26 +dnl Keep that check as early as possible.
    27 +dnl as we need to know whether we need libm
    28 +dnl for math functions or not
    29 +dnl (see http://hackage.haskell.org/trac/ghc/ticket/3730)
    30 AC_CHECK_FUNC(atan,[fp_libm_not_needed=yes;LIBM=],[fp_libm_not_needed=dunno])
    31 if test x"$fp_libm_not_needed" = xdunno; then
    32 AC_CHECK_LIB([m], [atan], [LIBS="-lm $LIBS"; LIBM="-lm"],[LIBM=])
    33 fi
    34 AC_SUBST([LIBM])
    35
    36 +dnl ** check whether this machine has BFD and liberty installed (used for debugging)
    37 +dnl the order of these tests matters: bfd needs liberty
    38 +AC_CHECK_LIB(iberty, xmalloc)
    39 +AC_CHECK_LIB(bfd, bfd_init)
    40 +
    41 dnl ################################################################
    42 dnl Check for libraries
    43 dnl ################################################################