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Diffstat (limited to 'm4/realloc.m4')
| -rw-r--r-- | m4/realloc.m4 | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/m4/realloc.m4 b/m4/realloc.m4 new file mode 100644 index 0000000..5cc1340 --- /dev/null +++ b/m4/realloc.m4 @@ -0,0 +1,38 @@ +# realloc.m4 serial 12 +dnl Copyright (C) 2007, 2009-2011 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +# gl_FUNC_REALLOC_GNU +# ------------------- +# Test whether 'realloc (0, 0)' is handled like in GNU libc, and replace +# realloc if it is not. +AC_DEFUN([gl_FUNC_REALLOC_GNU], +[ + AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) + dnl _AC_FUNC_REALLOC_IF is defined in Autoconf. + _AC_FUNC_REALLOC_IF( + [AC_DEFINE([HAVE_REALLOC_GNU], [1], + [Define to 1 if your system has a GNU libc compatible 'realloc' + function, and to 0 otherwise.])], + [AC_DEFINE([HAVE_REALLOC_GNU], [0]) + REPLACE_REALLOC=1 + ]) +])# gl_FUNC_REALLOC_GNU + +# gl_FUNC_REALLOC_POSIX +# --------------------- +# Test whether 'realloc' is POSIX compliant (sets errno to ENOMEM when it +# fails), and replace realloc if it is not. +AC_DEFUN([gl_FUNC_REALLOC_POSIX], +[ + AC_REQUIRE([gl_STDLIB_H_DEFAULTS]) + AC_REQUIRE([gl_CHECK_MALLOC_POSIX]) + if test $gl_cv_func_malloc_posix = yes; then + AC_DEFINE([HAVE_REALLOC_POSIX], [1], + [Define if the 'realloc' function is POSIX compliant.]) + else + REPLACE_REALLOC=1 + fi +]) |