blob: 4c8a77cbe455757579d4b6c0988051b2b350e2b3 [file] [log] [blame]
Ross Burton9519cd52014-07-03 23:19:38 -04001# from http://autoconf-archive.cryp.to/ax_tls.html
2#
3# This was licensed under the GPL with the following exception:
4#
5# As a special exception, the respective Autoconf Macro's copyright
6# owner gives unlimited permission to copy, distribute and modify the
7# configure scripts that are the output of Autoconf when processing
8# the Macro. You need not follow the terms of the GNU General Public
9# License when using or distributing such scripts, even though
10# portions of the text of the Macro appear in them. The GNU General
11# Public License (GPL) does govern all other use of the material that
12# constitutes the Autoconf Macro.
13#
14# This special exception to the GPL applies to versions of the
15# Autoconf Macro released by the Autoconf Macro Archive. When you make
16# and distribute a modified version of the Autoconf Macro, you may
17# extend this special exception to the GPL to apply to your modified
18# version as well.
19#
20AC_DEFUN([AX_TLS], [
21 AC_MSG_CHECKING(for thread local storage (TLS) class)
22 AC_CACHE_VAL(ac_cv_tls, [
23 ax_tls_keywords="__thread __declspec(thread) none"
24 for ax_tls_keyword in $ax_tls_keywords; do
25 case $ax_tls_keyword in
26 none) ac_cv_tls=none ; break ;;
27 *)
28 AC_TRY_COMPILE(
29 [#include <stdlib.h>
30 static void
31 foo(void) {
32 static ] $ax_tls_keyword [ int bar;
33 exit(1);
34 }],
35 [],
36 [ac_cv_tls=$ax_tls_keyword ; break],
37 ac_cv_tls=none
38 )
39 esac
40 done
41])
42
43 if test "$ac_cv_tls" != "none"; then
44 dnl AC_DEFINE([TLS], [], [If the compiler supports a TLS storage class define it to that here])
45 AC_DEFINE_UNQUOTED([TLS], $ac_cv_tls, [If the compiler supports a TLS storage class define it to that here])
46 fi
47 AC_MSG_RESULT($ac_cv_tls)
48])
49
50# ===========================================================================
51# http://www.nongnu.org/autoconf-archive/check_gnu_make.html
52# ===========================================================================
53#
54# SYNOPSIS
55#
56# CHECK_GNU_MAKE()
57#
58# DESCRIPTION
59#
60# This macro searches for a GNU version of make. If a match is found, the
61# makefile variable `ifGNUmake' is set to the empty string, otherwise it
62# is set to "#". This is useful for including a special features in a
63# Makefile, which cannot be handled by other versions of make. The
64# variable _cv_gnu_make_command is set to the command to invoke GNU make
65# if it exists, the empty string otherwise.
66#
67# Here is an example of its use:
68#
69# Makefile.in might contain:
70#
71# # A failsafe way of putting a dependency rule into a makefile
72# $(DEPEND):
73# $(CC) -MM $(srcdir)/*.c > $(DEPEND)
74#
75# @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
76# @ifGNUmake@ include $(DEPEND)
77# @ifGNUmake@ endif
78#
79# Then configure.in would normally contain:
80#
81# CHECK_GNU_MAKE()
82# AC_OUTPUT(Makefile)
83#
84# Then perhaps to cause gnu make to override any other make, we could do
85# something like this (note that GNU make always looks for GNUmakefile
86# first):
87#
88# if ! test x$_cv_gnu_make_command = x ; then
89# mv Makefile GNUmakefile
90# echo .DEFAULT: > Makefile ;
91# echo \ $_cv_gnu_make_command \$@ >> Makefile;
92# fi
93#
94# Then, if any (well almost any) other make is called, and GNU make also
95# exists, then the other make wraps the GNU make.
96#
97# LICENSE
98#
99# Copyright (c) 2008 John Darrington <j.darrington@elvis.murdoch.edu.au>
100#
101# Copying and distribution of this file, with or without modification, are
102# permitted in any medium without royalty provided the copyright notice
103# and this notice are preserved.
104#
105# Note: Modified by Ted Ts'o to add @ifNotGNUMake@
106
107AC_DEFUN(
108 [CHECK_GNU_MAKE], [ AC_CACHE_CHECK( for GNU make,_cv_gnu_make_command,
109 _cv_gnu_make_command='' ;
110dnl Search all the common names for GNU make
111 for a in "$MAKE" make gmake gnumake ; do
112 if test -z "$a" ; then continue ; fi ;
113 if ( sh -c "$a --version" 2> /dev/null | grep GNU 2>&1 > /dev/null ) ; then
114 _cv_gnu_make_command=$a ;
115 break;
116 fi
117 done ;
118 ) ;
119dnl If there was a GNU version, then set @ifGNUmake@ to the empty string, '#' otherwise
120 if test "x$_cv_gnu_make_command" != "x" ; then
121 ifGNUmake='' ;
122 ifNotGNUmake='#' ;
123 else
124 ifGNUmake='#' ;
125 ifNotGNUmake='' ;
126 AC_MSG_RESULT("Not found");
127 fi
128 AC_SUBST(ifGNUmake)
129 AC_SUBST(ifNotGNUmake)
130] )
Theodore Ts'o5b5bd2c2014-07-10 00:17:05 -0400131# was originally from nls.m4 serial 1 (gettext-0.12)
132AC_DEFUN([AM_MKINSTALLDIRS],
133[
134 dnl If the AC_CONFIG_AUX_DIR macro for autoconf is used we possibly
135 dnl find the mkinstalldirs script in another subdir but $(top_srcdir).
136 dnl Try to locate it.
137 MKINSTALLDIRS=
138 if test -n "$ac_aux_dir"; then
139 case "$ac_aux_dir" in
140 /*) MKINSTALLDIRS="$ac_aux_dir/mkinstalldirs" ;;
141 *) MKINSTALLDIRS="\$(top_builddir)/$ac_aux_dir/mkinstalldirs" ;;
142 esac
143 fi
144 if test -z "$MKINSTALLDIRS"; then
145 MKINSTALLDIRS="\$(top_srcdir)/mkinstalldirs"
146 fi
147 AC_SUBST(MKINSTALLDIRS)
148])