grub/m4/malloc.m4
Yves Blusseau 15c6926126 Use gnulib-tool to create gnulib source files.
* Add gnulib files generated by gnulib-tool in build-aux, m4 and
    grub-core/gnulib directories
    * .bzignore: Add **/.deps and autogenerated gnulib files
    * configure.ac: Assign auxiliary directory to build-aux, add invocation
    of gnulib macros, add grub-core/gnulib/Makefile
    * Makefile.am: Add gnulib directory in SUBDIRS (removing unnecessary .),
    include m4 directory to aclocal.
    * Makefile.util.def: Remove direct compilation of gnulib source files
    and use the new grub-core/gnulib/libgnu.a.
    * build-aux/config.rpath: move config.rpath from top directory to
    build-aux
    * conf/Makefile.common: Remove the macro _GL_UNUSED already defined
    in gnulib headers
    * conf/Makefile.extra-dist: Add m4/gnulib-cache.m4
    * grub-core/Makefile.core.def: Remove unnecessary extra_dist
    * grub-core/lib/posix_wrap/localcharset.h (locale_charset): Update
    header.
    * grub-core/lib/posix_wrap/langinfo.h (nl_langinfo): Return static
    string.
2010-09-20 12:35:33 +02:00

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Text

# malloc.m4 serial 12
dnl Copyright (C) 2007, 2009, 2010 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_MALLOC_GNU
# ------------------
# Test whether 'malloc (0)' is handled like in GNU libc, and replace malloc if
# it is not.
AC_DEFUN([gl_FUNC_MALLOC_GNU],
[
AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
dnl _AC_FUNC_MALLOC_IF is defined in Autoconf.
_AC_FUNC_MALLOC_IF(
[AC_DEFINE([HAVE_MALLOC_GNU], [1],
[Define to 1 if your system has a GNU libc compatible 'malloc'
function, and to 0 otherwise.])],
[AC_DEFINE([HAVE_MALLOC_GNU], [0])
gl_REPLACE_MALLOC
])
])
# gl_FUNC_MALLOC_POSIX
# --------------------
# Test whether 'malloc' is POSIX compliant (sets errno to ENOMEM when it
# fails), and replace malloc if it is not.
AC_DEFUN([gl_FUNC_MALLOC_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_MALLOC_POSIX], [1],
[Define if the 'malloc' function is POSIX compliant.])
else
gl_REPLACE_MALLOC
fi
])
# Test whether malloc, realloc, calloc are POSIX compliant,
# Set gl_cv_func_malloc_posix to yes or no accordingly.
AC_DEFUN([gl_CHECK_MALLOC_POSIX],
[
AC_CACHE_CHECK([whether malloc, realloc, calloc are POSIX compliant],
[gl_cv_func_malloc_posix],
[
dnl It is too dangerous to try to allocate a large amount of memory:
dnl some systems go to their knees when you do that. So assume that
dnl all Unix implementations of the function are POSIX compliant.
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[[]],
[[#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
choke me
#endif
]])],
[gl_cv_func_malloc_posix=yes],
[gl_cv_func_malloc_posix=no])
])
])
AC_DEFUN([gl_REPLACE_MALLOC],
[
AC_LIBOBJ([malloc])
REPLACE_MALLOC=1
])