forked from artenax/tor
-
Notifications
You must be signed in to change notification settings - Fork 0
/
acinclude.m4
210 lines (190 loc) · 6.53 KB
/
acinclude.m4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
dnl $Id$
dnl Helper macros for Tor configure.in
dnl Copyright (c) 2001-2004, Roger Dingledine
dnl Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson
dnl Copyright (c) 2007-2008, Roger Dingledine, Nick Mathewson
dnl See LICENSE for licensing information
AC_DEFUN([TOR_EXTEND_CODEPATH],
[
if test -d "$1/lib"; then
LDFLAGS="-L$1/lib $LDFLAGS"
else
LDFLAGS="-L$1 $LDFLAGS"
fi
if test -d "$1/include"; then
CPPFLAGS="-I$1/include $CPPFLAGS"
else
CPPFLAGS="-I$1 $CPPFLAGS"
fi
])
AC_DEFUN([TOR_DEFINE_CODEPATH],
[
if test x$1 = "x(system)"; then
TOR_LDFLAGS_$2=""
TOR_CPPFLAGS_$2=""
else
if test -d "$1/lib"; then
TOR_LDFLAGS_$2="-L$1/lib"
else
TOR_LDFLAGS_$2="-L$1"
fi
if test -d "$1/include"; then
TOR_CPPFLAGS_$2="-I$1/include"
else
TOR_CPPFLAGS_$2="-I$1"
fi
fi
AC_SUBST(TOR_CPPFLAGS_$2)
AC_SUBST(TOR_LDFLAGS_$2)
])
dnl 1:libname
AC_DEFUN([TOR_WARN_MISSING_LIB], [
h=""
if test x$2 = xdevpkg; then
h=" headers for"
fi
if test -f /etc/debian_version && test x"$tor_$1_$2_debian" != x; then
AC_WARN([On Debian, you can install$h $1 using "apt-get install $tor_$1_$2_debian"])
if test x"$tor_$1_$2_debian" != x"$tor_$1_devpkg_debian"; then
AC_WARN([ You will probably need $tor_$1_devpkg_debian too.])
fi
fi
if test -f /etc/fedora-release && test x"$tor_$1_$2_redhat" != x; then
AC_WARN([On Fedora Core, you can install$h $1 using "yum install $tor_$1_$2_redhat"])
if test x"$tor_$1_$2_redhat" != x"$tor_$1_devpkg_redhat"; then
AC_WARN([ You will probably need to install $tor_$1_devpkg_redhat too.])
fi
else
if test -f /etc/redhat-release && test x"$tor_$1_$2_redhat" != x; then
AC_WARN([On most Redhat-based systems, you can get$h $1 by installing the $tor_$1_$2_redhat" RPM package])
if test x"$tor_$1_$2_redhat" != x"$tor_$1_devpkg_redhat"; then
AC_WARN([ You will probably need to install $tor_$1_devpkg_redhat too.])
fi
fi
fi
])
dnl Look for a library, and its associated includes, and how to link
dnl against it.
dnl
dnl TOR_SEARCH_LIBRARY(1:libname, 2:IGNORED, 3:linkargs, 4:headers,
dnl 5:prototype,
dnl 6:code, 7:optionname, 8:searchextra)
AC_DEFUN([TOR_SEARCH_LIBRARY], [
try$1dir=""
AC_ARG_WITH($1-dir,
[ --with-$1-dir=PATH Specify path to $1 installation ],
[
if test x$withval != xno ; then
try$1dir="$withval"
fi
])
tor_saved_LIBS="$LIBS"
tor_saved_LDFLAGS="$LDFLAGS"
tor_saved_CPPFLAGS="$CPPFLAGS"
AC_CACHE_CHECK([for $1 directory], tor_cv_library_$1_dir, [
tor_$1_dir_found=no
tor_$1_any_linkable=no
for tor_trydir in "$try$1dir" "(system)" "$prefix" /usr/local /usr/pkg $8; do
LDFLAGS="$tor_saved_LDFLAGS"
LIBS="$tor_saved_LIBS $3"
CPPFLAGS="$tor_saved_CPPFLAGS"
if test -z "$tor_trydir" ; then
continue;
fi
# Skip the directory if it isn't there.
if test ! -d "$tor_trydir" && test "$tor_trydir" != "(system)"; then
continue;
fi
# If this isn't blank, try adding the directory (or appropriate
# include/libs subdirectories) to the command line.
if test "$tor_trydir" != "(system)"; then
TOR_EXTEND_CODEPATH($tor_trydir)
fi
# Can we link against (but not necessarily run, or find the headers for)
# the binary?
AC_LINK_IFELSE(AC_LANG_PROGRAM([$5], [$6]),
[linkable=yes], [linkable=no])
if test "$linkable" = yes; then
tor_$1_any_linkable=yes
# Okay, we can link against it. Can we find the headers?
AC_COMPILE_IFELSE(AC_LANG_PROGRAM([$4], [$6]),
[buildable=yes], [buildable=no])
if test "$buildable" = yes; then
tor_cv_library_$1_dir=$tor_trydir
tor_$1_dir_found=yes
break
fi
fi
done
if test "$tor_$1_dir_found" = no; then
if test "$tor_$1_any_linkable" = no ; then
AC_MSG_WARN([Could not find a linkable $1. If you have it installed somewhere unusual, you can specify an explicit path using $7])
TOR_WARN_MISSING_LIB($1, pkg)
AC_MSG_ERROR([Missing libraries; unable to proceed.])
else
AC_MSG_WARN([We found the libraries for $1, but we could not find the C header files. You may need to install a devel package.])
TOR_WARN_MISSING_LIB($1, devpkg)
AC_MSG_ERROR([Missing headers; unable to proceed.])
fi
fi
LDFLAGS="$tor_saved_LDFLAGS"
LIBS="$tor_saved_LIBS"
CPPFLAGS="$tor_saved_CPPFLAGS"
]) dnl end cache check
LIBS="$LIBS $3"
if test "$tor_cv_library_$1_dir" != "(system)"; then
TOR_EXTEND_CODEPATH($tor_cv_library_$1_dir)
fi
TOR_DEFINE_CODEPATH($tor_cv_library_$1_dir, $1)
if test "$cross_compiling" != yes; then
AC_CACHE_CHECK([whether we need extra options to link $1],
tor_cv_library_$1_linker_option, [
orig_LDFLAGS="$LDFLAGS"
runs=no
linked_with=nothing
if test -d "$tor_cv_library_$1_dir/lib"; then
tor_trydir="$tor_cv_library_$1_dir/lib"
else
tor_trydir="$tor_cv_library_$1_dir"
fi
for tor_tryextra in "(none)" "-Wl,-R$tor_trydir" "-R$tor_trydir" \
"-Wl,-rpath,$tor_trydir" ; do
if test "$tor_tryextra" = "(none)"; then
LDFLAGS="$orig_LDFLAGS"
else
LDFLAGS="$tor_tryextra $orig_LDFLAGS"
fi
AC_RUN_IFELSE(AC_LANG_PROGRAM([$5], [$6]),
[runnable=yes], [runnable=no])
if test "$runnable" = yes; then
tor_cv_library_$1_linker_option=$tor_tryextra
break
fi
done
if test "$runnable" = no; then
AC_MSG_ERROR([Found linkable $1 in $tor_cv_library_$1_dir, but it does not seem to run, even with -R. Maybe specify another using $7}])
fi
LDFLAGS="$orig_LDFLAGS"
]) dnl end cache check check for extra options.
if test "$tor_cv_library_$1_linker_option" != "(none)" ; then
TOR_LDFLAGS_$1="$TOR_LDFLAGS_$1 $tor_cv_library_$1_linker_option"
fi
fi # cross-compile
LIBS="$tor_saved_LIBS"
LDFLAGS="$tor_saved_LDFLAGS"
CPPFLAGS="$tor_saved_CPPFLAGS"
]) dnl end defun
dnl Check whether the prototype for a function is present or missing.
dnl Apple has a nasty habit of putting functions in their libraries (so that
dnl AC_CHECK_FUNCS passes) but not actually declaring them in the headers.
dnl
dnl TOR_CHECK_PROTYPE(1:functionname, 2:macroname, 2: includes)
AC_DEFUN([TOR_CHECK_PROTOTYPE], [
AC_CACHE_CHECK([for declaration of $1], tor_cv_$1_declared, [
AC_COMPILE_IFELSE(AC_LANG_PROGRAM([$3],[void *ptr= $1 ;]),
tor_cv_$1_declared=yes,tor_cv_$1_declared=no)])
if test x$tor_cv_$1_declared != xno ; then
AC_DEFINE($2, 1,
[Defined if the prototype for $1 seems to be present.])
fi
])