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46 lines
1.4 KiB
46 lines
1.4 KiB
dnl ICP_CHECK_NOTCH_FUNCS
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dnl Check for various functions that may not be present
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dnl everywhere, and for which we provide a replacement.
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dnl
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AC_DEFUN([ICP_CHECK_NOTCH_FUNCS],[
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AC_CHECK_HEADERS([err.h], [], [AC_CONFIG_LINKS([err.h:lib/err.compat.h])])
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AC_REPLACE_FUNCS([asprintf err])
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AC_CHECK_DECLS([program_invocation_short_name], [],
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[AC_CHECK_FUNCS([getprogname setprogname], [],
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[AC_LIBOBJ([progname])])],
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[#include <errno.h>
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])
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AH_BOTTOM([#include <compat.h>
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])
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])
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dnl ICP_CHECK_SANE_REALPATH([ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
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dnl Check for the realpath function. If it is available, then
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dnl check if it is safely usable.
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dnl
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AC_DEFUN([ICP_CHECK_SANE_REALPATH],[
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AC_CHECK_FUNCS([realpath])
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if test "x$ac_cv_func_realpath" = xyes ; then
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AC_MSG_CHECKING([whether realpath is POSIX.1-2008 compliant])
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <stdlib.h>]],
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[[
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char *p = NULL;
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p = realpath("/tmp", NULL);
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if ( p == NULL )
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return 1;
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else
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free(p);
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]])],
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[AC_MSG_RESULT([yes])
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m4_default([$1], [AC_DEFINE([HAVE_SANE_REALPATH], [1],
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[Define to 1 if realpath is POSIX.1-2008 compliant.])])],
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[AC_MSG_RESULT([no])
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$2],
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[AC_MSG_RESULT([cross-compiling, assuming no])
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$2])
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else
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m4_default([$2], [:])
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fi
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])
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