Added check for pwd.h.
[wine/wine64.git] / aclocal.m4
blob9a51ad84990c011da78d5216e024368a824381d8
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
20 dnl **** Get the ldd program name; used by WINE_GET_SONAME ****
21 dnl
22 dnl Usage: WINE_PATH_LDD
23 dnl
24 AC_DEFUN([WINE_PATH_LDD],[AC_PATH_PROG(LDD,ldd,true,/sbin:/usr/sbin:$PATH)])
26 dnl **** Extract the soname of a library ****
27 dnl
28 dnl Usage: WINE_GET_SONAME(LIBRARY, FUNCTION, [OTHER_LIBRARIES])
29 dnl
30 AC_DEFUN([WINE_GET_SONAME],
31 [AC_REQUIRE([WINE_PATH_LDD])
32 AC_CACHE_CHECK([for -l$1 soname], ac_cv_lib_soname_$1,
33 [ac_get_soname_save_LIBS=$LIBS
34 LIBS="-l$1 $3 $LIBS"
35   AC_LINK_IFELSE([AC_LANG_CALL([], [$2])],
36   [ac_cv_lib_soname_$1=`$ac_cv_path_LDD conftest$ac_exeext | grep lib$1\\.so | sed 's/^[[       ]]*\([[^        ]]*\)[[         ]]*=>.*$/\1/'`
37   if test "x$ac_cv_lib_soname_$1" = "x"
38   then
39      ac_cv_lib_soname_$1="lib$1.so"
40   fi],
41   [ac_cv_lib_soname_$1="lib$1.so"])
42   LIBS=$ac_get_soname_save_LIBS])
43 if test "x$ac_cv_lib_soname_$1" != xNONE
44 then AC_DEFINE_UNQUOTED(AS_TR_CPP(SONAME_LIB$1),"$ac_cv_lib_soname_$1",
45                         [Define to the soname of the lib$1 library.])dnl
46 fi])
48 dnl **** Check if a structure contains a specified member ****
49 dnl
50 dnl Usage: WINE_CHECK_STRUCT_MEMBER(struct,member,[includes,[action-if-found,[action-if-not-found]]])
51 dnl
52 AC_DEFUN([WINE_CHECK_STRUCT_MEMBER],
53 [AC_CACHE_CHECK([for $2 in struct $1], ac_cv_c_$1_$2,
54  AC_TRY_COMPILE([$3],[struct $1 s; s.$2 = 0],ac_cv_c_$1_$2="yes",ac_cv_c_$1_$2="no"))
55 AS_IF([ test "x$ac_cv_c_$1_$2" = "xyes"],[$4],[$5])
58 dnl **** Check for reentrant libc ****
59 dnl
60 dnl Usage: WINE_CHECK_ERRNO(errno-name,[action-if-yes,[action-if-no]])
61 dnl
62 dnl For cross-compiling we blindly assume that libc is reentrant. This is
63 dnl ok since non-reentrant libc is quite rare (mostly old libc5 versions).
64 dnl
65 AC_DEFUN([WINE_CHECK_ERRNO],
66 [AC_CACHE_CHECK([for reentrant libc: $1],[wine_cv_libc_r_$1],
67   [AC_TRY_RUN([int myerrno = 0;
68 char buf[256];
69 int *$1(){return &myerrno;}
70 main(){connect(0,buf,255); exit(!myerrno);}],
71   wine_cv_libc_r_$1=yes, wine_cv_libc_r_$1=no,
72   wine_cv_libc_r_$1=yes)])
73 AS_IF([test "$wine_cv_libc_r_$1" = "yes"],[$2],[$3])])
75 dnl **** Link C code with an assembly file ****
76 dnl
77 dnl Usage: WINE_TRY_ASM_LINK(asm-code,includes,function,[action-if-found,[action-if-not-found]])
78 dnl
79 AC_DEFUN([WINE_TRY_ASM_LINK],
80 [ac_try_asm_link_saved_libs=$LIBS
81 LIBS="conftest_asm.s $LIBS"
82 cat > conftest_asm.s <<EOF
84 EOF
85 AC_TRY_LINK([$2],[$3],[$4],[$5])
86 rm -f conftest_asm.s
87 LIBS=$ac_try_asm_link_saved_libs])
89 dnl **** Check if we can link an empty program with special CFLAGS ****
90 dnl
91 dnl Usage: WINE_TRY_CFLAGS(flags,[action-if-yes,[action-if-no]])
92 dnl
93 AC_DEFUN([WINE_TRY_CFLAGS],
94 [ac_wine_try_cflags_saved=$CFLAGS
95 CFLAGS="$CFLAGS $1"
96 AC_TRY_LINK([],[],[$2],[$3])
97 CFLAGS=$ac_wine_try_cflags_saved])
99 dnl **** Check for ln ****
101 dnl Usage: WINE_PROG_LN
103 AC_DEFUN([WINE_PROG_LN],
104 [AC_MSG_CHECKING([whether ln works])
105 rm -f conf$$ conf$$.file
106 echo >conf$$.file
107 if ln conf$$.file conf$$ 2>/dev/null; then
108   AC_SUBST(LN,ln)
109   AC_MSG_RESULT([yes])
110 else
111   AC_SUBST(LN,["cp -p"])
112   AC_MSG_RESULT([no, using $LN])
114 rm -f conf$$ conf$$.file])
116 dnl **** Create non-existent directories from config.status ****
118 dnl Usage: WINE_CONFIG_EXTRA_DIR(dirname)
120 AC_DEFUN([WINE_CONFIG_EXTRA_DIR],
121 [AC_CONFIG_COMMANDS([$1],[test -d "$1" || (AC_MSG_NOTICE([creating $1]) && mkdir "$1")])])