Move real mode interrupt emulation code to file interrupts.c.
[wine] / aclocal.m4
1 dnl Macros used to build the Wine configure script
2 dnl
3 dnl Copyright 2002 Alexandre Julliard
4 dnl
5 dnl This library is free software; you can redistribute it and/or
6 dnl modify it under the terms of the GNU Lesser General Public
7 dnl License as published by the Free Software Foundation; either
8 dnl version 2.1 of the License, or (at your option) any later version.
9 dnl
10 dnl This library is distributed in the hope that it will be useful,
11 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
12 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13 dnl Lesser General Public License for more details.
14 dnl
15 dnl You should have received a copy of the GNU Lesser General Public
16 dnl License along with this library; if not, write to the Free Software
17 dnl Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
18 dnl
19 dnl As a special exception to the GNU Lesser General Public License,
20 dnl if you distribute this file as part of a program that contains a
21 dnl configuration script generated by Autoconf, you may include it
22 dnl under the same distribution terms that you use for the rest of
23 dnl that program.
24
25 dnl **** Get the ldd program name; used by WINE_GET_SONAME ****
26 dnl
27 dnl Usage: WINE_PATH_LDD
28 dnl
29 AC_DEFUN([WINE_PATH_LDD],[AC_PATH_PROG(LDD,ldd,true,/sbin:/usr/sbin:$PATH)])
30
31 dnl **** Extract the soname of a library ****
32 dnl
33 dnl Usage: WINE_GET_SONAME(LIBRARY, FUNCTION, [OTHER_LIBRARIES])
34 dnl
35 AC_DEFUN([WINE_GET_SONAME],
36 [AC_REQUIRE([WINE_PATH_LDD])
37 AC_CACHE_CHECK([for -l$1 soname], ac_cv_lib_soname_$1,
38 [ac_get_soname_save_LIBS=$LIBS
39 LIBS="-l$1 $3 $LIBS"
40   AC_LINK_IFELSE([AC_LANG_CALL([], [$2])],
41   [ac_cv_lib_soname_$1=`$ac_cv_path_LDD conftest$ac_exeext | grep lib$1\\.so | sed 's/^[[       ]]*\([[^        ]]*\)[[         ]]*=>.*$/\1/'`
42   if test "x$ac_cv_lib_soname_$1" = "x"
43   then
44      ac_cv_lib_soname_$1="lib$1.so"
45   fi],
46   [ac_cv_lib_soname_$1="lib$1.so"])
47   LIBS=$ac_get_soname_save_LIBS])
48 if test "x$ac_cv_lib_soname_$1" != xNONE
49 then AC_DEFINE_UNQUOTED(AS_TR_CPP(SONAME_LIB$1),"$ac_cv_lib_soname_$1",
50                         [Define to the soname of the lib$1 library.])dnl
51 fi])
52
53 dnl **** Check if a structure contains a specified member ****
54 dnl
55 dnl Usage: WINE_CHECK_STRUCT_MEMBER(struct,member,[includes,[action-if-found,[action-if-not-found]]])
56 dnl
57 AC_DEFUN([WINE_CHECK_STRUCT_MEMBER],
58 [AC_CACHE_CHECK([for $2 in struct $1], ac_cv_c_$1_$2,
59  AC_TRY_COMPILE([$3],[struct $1 s; s.$2 = 0],ac_cv_c_$1_$2="yes",ac_cv_c_$1_$2="no"))
60 AS_IF([ test "x$ac_cv_c_$1_$2" = "xyes"],[$4],[$5])
61 ])
62
63 dnl **** Check for reentrant libc ****
64 dnl
65 dnl Usage: WINE_CHECK_ERRNO(errno-name,[action-if-yes,[action-if-no]])
66 dnl
67 dnl For cross-compiling we blindly assume that libc is reentrant. This is
68 dnl ok since non-reentrant libc is quite rare (mostly old libc5 versions).
69 dnl
70 AC_DEFUN([WINE_CHECK_ERRNO],
71 [AC_CACHE_CHECK([for reentrant libc: $1],[wine_cv_libc_r_$1],
72   [AC_TRY_RUN([int myerrno = 0;
73 int *$1(){return &myerrno;}
74 main(){close(333); close(333); exit(!myerrno);}],
75   wine_cv_libc_r_$1=yes, wine_cv_libc_r_$1=no,
76   wine_cv_libc_r_$1=yes)])
77 AS_IF([test "$wine_cv_libc_r_$1" = "yes"],[$2],[$3])])
78
79 dnl **** Link C code with an assembly file ****
80 dnl
81 dnl Usage: WINE_TRY_ASM_LINK(asm-code,includes,function,[action-if-found,[action-if-not-found]])
82 dnl
83 AC_DEFUN([WINE_TRY_ASM_LINK],
84 [AC_TRY_LINK([void ac_asm(void) { asm([$1]); }
85 [$2]],[$3],[$4],[$5])])
86
87 dnl **** Check if we can link an empty program with special CFLAGS ****
88 dnl
89 dnl Usage: WINE_TRY_CFLAGS(flags,[action-if-yes,[action-if-no]])
90 dnl
91 AC_DEFUN([WINE_TRY_CFLAGS],
92 [ac_wine_try_cflags_saved=$CFLAGS
93 CFLAGS="$CFLAGS $1"
94 AC_TRY_LINK([],[],[$2],[$3])
95 CFLAGS=$ac_wine_try_cflags_saved])
96
97 dnl **** Check whether we need to define a symbol on the compiler command line ****
98 dnl
99 dnl Usage: WINE_CHECK_DEFINE(name),[action-if-yes,[action-if-no]])
100 dnl
101 AC_DEFUN([WINE_CHECK_DEFINE],
102 [AS_VAR_PUSHDEF([ac_var],[ac_cv_cpp_def_$1])dnl
103 AC_CACHE_CHECK([whether we need to define $1],ac_var,
104     AC_EGREP_CPP(yes,[#ifndef $1
105 yes
106 #endif],
107     [AS_VAR_SET(ac_var,yes)],[AS_VAR_SET(ac_var,no)]))
108 AS_IF([test AS_VAR_GET(ac_var) = yes],
109       [CFLAGS="$CFLAGS -D$1"
110   LINTFLAGS="$LINTFLAGS -D$1"])dnl
111 AS_VAR_POPDEF([ac_var])])
112
113 dnl **** Check for ln ****
114 dnl
115 dnl Usage: WINE_PROG_LN
116 dnl
117 AC_DEFUN([WINE_PROG_LN],
118 [AC_MSG_CHECKING([whether ln works])
119 rm -f conf$$ conf$$.file
120 echo >conf$$.file
121 if ln conf$$.file conf$$ 2>/dev/null; then
122   AC_SUBST(LN,ln)
123   AC_MSG_RESULT([yes])
124 else
125   AC_SUBST(LN,["cp -p"])
126   AC_MSG_RESULT([no, using $LN])
127 fi
128 rm -f conf$$ conf$$.file])
129
130 dnl **** Create non-existent directories from config.status ****
131 dnl
132 dnl Usage: WINE_CONFIG_EXTRA_DIR(dirname)
133 dnl
134 AC_DEFUN([WINE_CONFIG_EXTRA_DIR],
135 [AC_CONFIG_COMMANDS([$1],[test -d "$1" || (AC_MSG_NOTICE([creating $1]) && mkdir "$1")])])