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Annotation of embedaddon/libiconv/srcm4/malloc.m4, revision 1.1.1.1

1.1       misho       1: # malloc.m4 serial 9
                      2: dnl Copyright (C) 2007, 2009 Free Software Foundation, Inc.
                      3: dnl This file is free software; the Free Software Foundation
                      4: dnl gives unlimited permission to copy and/or distribute it,
                      5: dnl with or without modifications, as long as this notice is preserved.
                      6: 
                      7: # gl_FUNC_MALLOC_POSIX
                      8: # --------------------
                      9: # Test whether 'malloc' is POSIX compliant (sets errno to ENOMEM when it
                     10: # fails), and replace malloc if it is not.
                     11: AC_DEFUN([gl_FUNC_MALLOC_POSIX],
                     12: [
                     13:   AC_REQUIRE([gl_CHECK_MALLOC_POSIX])
                     14:   if test $gl_cv_func_malloc_posix = yes; then
                     15:     HAVE_MALLOC_POSIX=1
                     16:     AC_DEFINE([HAVE_MALLOC_POSIX], [1],
                     17:       [Define if the 'malloc' function is POSIX compliant.])
                     18:   else
                     19:     AC_LIBOBJ([malloc])
                     20:     HAVE_MALLOC_POSIX=0
                     21:   fi
                     22:   AC_SUBST([HAVE_MALLOC_POSIX])
                     23: ])
                     24: 
                     25: # Test whether malloc, realloc, calloc are POSIX compliant,
                     26: # Set gl_cv_func_malloc_posix to yes or no accordingly.
                     27: AC_DEFUN([gl_CHECK_MALLOC_POSIX],
                     28: [
                     29:   AC_CACHE_CHECK([whether malloc, realloc, calloc are POSIX compliant],
                     30:     [gl_cv_func_malloc_posix],
                     31:     [
                     32:       dnl It is too dangerous to try to allocate a large amount of memory:
                     33:       dnl some systems go to their knees when you do that. So assume that
                     34:       dnl all Unix implementations of the function are POSIX compliant.
                     35:       AC_TRY_COMPILE([],
                     36:         [#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
                     37:          choke me
                     38:          #endif
                     39:         ], [gl_cv_func_malloc_posix=yes], [gl_cv_func_malloc_posix=no])
                     40:     ])
                     41: ])