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325bf192ae
This incorporates: 2015-06-06 acl-permissions: pacify -Wsuggest-attribute=const 2015-06-05 stdio: Don't redefine gets when using C++ 2015-06-05 acl-permissions: port to AIX, C89 HP-UX 2015-06-02 file-has-acl: fix build on Mac OS X 10 2015-06-01 gnulib-tool: concatenate lib_SOURCES to a single line 2015-06-01 pthread_sigmask: discount system version if a simple macro 2015-05-31 readlinkat: avoid OS X 10.10 trailing slash bug * doc/misc/texinfo.tex, lib/acl-internal.h, lib/get-permissions.c: * lib/readlinkat.c, lib/set-permissions.c, lib/stdio.in.h: * m4/acl.m4, m4/pthread_sigmask.m4, m4/readlinkat.m4: Copy from gnulib. * lib/gnulib.mk: Regenerate.
43 lines
1.3 KiB
Plaintext
43 lines
1.3 KiB
Plaintext
# serial 5
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# See if we need to provide readlinkat replacement.
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dnl Copyright (C) 2009-2015 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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# Written by Eric Blake.
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AC_DEFUN([gl_FUNC_READLINKAT],
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[
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AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
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AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
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AC_CHECK_FUNCS_ONCE([readlinkat])
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AC_REQUIRE([gl_FUNC_READLINK])
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if test $ac_cv_func_readlinkat = no; then
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HAVE_READLINKAT=0
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else
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AC_CACHE_CHECK([whether readlinkat signature is correct],
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[gl_cv_decl_readlinkat_works],
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <unistd.h>
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/* Check whether original declaration has correct type. */
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ssize_t readlinkat (int, char const *, char *, size_t);]])],
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[gl_cv_decl_readlinkat_works=yes],
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[gl_cv_decl_readlinkat_works=no])])
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# Assume readinkat has the same trailing slash bug as readlink,
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# as is the case on Mac Os X 10.10
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case "$gl_cv_func_readlink_works" in
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*yes)
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if test "$gl_cv_decl_readlinkat_works" != yes; then
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REPLACE_READLINKAT=1
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fi
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;;
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*)
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REPLACE_READLINKAT=1
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;;
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esac
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fi
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])
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