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1 | # =========================================================================== |
2 | # http://www.gnu.org/software/autoconf-archive/ax_check_openssl.html | |
3 | # =========================================================================== | |
4 | # | |
5 | # SYNOPSIS | |
6 | # | |
7 | # AX_CHECK_OPENSSL([action-if-found[, action-if-not-found]]) | |
8 | # | |
9 | # DESCRIPTION | |
10 | # | |
11 | # Look for OpenSSL in a number of default spots, or in a user-selected | |
12 | # spot (via --with-openssl). Sets | |
13 | # | |
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14 | # SSL_INCLUDES to the include directives required |
15 | # SSL_LIBS to the -l directives required | |
16 | # SSL_LDFLAGS to the -L or -R flags required | |
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17 | # |
18 | # and calls ACTION-IF-FOUND or ACTION-IF-NOT-FOUND appropriately | |
19 | # | |
0f31bef5 | 20 | # This macro sets SSL_INCLUDES such that source files should use the |
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21 | # openssl/ directory in include directives: |
22 | # | |
23 | # #include <openssl/hmac.h> | |
24 | # | |
25 | # LICENSE | |
26 | # | |
27 | # Copyright (c) 2009,2010 Zmanda Inc. <http://www.zmanda.com/> | |
28 | # Copyright (c) 2009,2010 Dustin J. Mitchell <dustin@zmanda.com> | |
29 | # | |
30 | # Copying and distribution of this file, with or without modification, are | |
31 | # permitted in any medium without royalty provided the copyright notice | |
32 | # and this notice are preserved. This file is offered as-is, without any | |
33 | # warranty. | |
34 | ||
35 | #serial 8 | |
36 | ||
37 | AU_ALIAS([CHECK_SSL], [AX_CHECK_OPENSSL]) | |
38 | AC_DEFUN([AX_CHECK_OPENSSL], [ | |
39 | found=false | |
40 | AC_ARG_WITH([openssl], | |
41 | [AS_HELP_STRING([--with-openssl=DIR], | |
42 | [root of the OpenSSL directory])], | |
43 | [ | |
44 | case "$withval" in | |
45 | "" | y | ye | yes | n | no) | |
46 | AC_MSG_ERROR([Invalid --with-openssl value]) | |
47 | ;; | |
48 | *) ssldirs="$withval" | |
49 | ;; | |
50 | esac | |
51 | ], [ | |
52 | # if pkg-config is installed and openssl has installed a .pc file, | |
53 | # then use that information and don't search ssldirs | |
54 | AC_PATH_PROG([PKG_CONFIG], [pkg-config]) | |
55 | if test x"$PKG_CONFIG" != x""; then | |
0f31bef5 | 56 | SSL_LDFLAGS=`$PKG_CONFIG openssl --libs-only-L 2>/dev/null` |
70423471 | 57 | if test $? = 0; then |
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58 | SSL_LIBS=`$PKG_CONFIG openssl --libs-only-l 2>/dev/null` |
59 | SSL_INCLUDES=`$PKG_CONFIG openssl --cflags-only-I 2>/dev/null` | |
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60 | found=true |
61 | fi | |
62 | fi | |
63 | ||
64 | # no such luck; use some default ssldirs | |
65 | if ! $found; then | |
66 | ssldirs="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr" | |
67 | fi | |
68 | ] | |
69 | ) | |
70 | ||
71 | ||
72 | # note that we #include <openssl/foo.h>, so the OpenSSL headers have to be in | |
73 | # an 'openssl' subdirectory | |
74 | ||
75 | if ! $found; then | |
0f31bef5 | 76 | SSL_INCLUDES= |
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77 | for ssldir in $ssldirs; do |
78 | AC_MSG_CHECKING([for openssl/ssl.h in $ssldir]) | |
79 | if test -f "$ssldir/include/openssl/ssl.h"; then | |
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80 | SSL_INCLUDES="-I$ssldir/include" |
81 | SSL_LDFLAGS="-L$ssldir/lib" | |
82 | SSL_LIBS="-lssl -lcrypto" | |
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83 | found=true |
84 | AC_MSG_RESULT([yes]) | |
85 | break | |
86 | else | |
87 | AC_MSG_RESULT([no]) | |
88 | fi | |
89 | done | |
90 | ||
91 | # if the file wasn't found, well, go ahead and try the link anyway -- maybe | |
92 | # it will just work! | |
93 | fi | |
94 | ||
95 | # try the preprocessor and linker with our new flags, | |
96 | # being careful not to pollute the global LIBS, LDFLAGS, and CPPFLAGS | |
97 | ||
98 | AC_MSG_CHECKING([whether compiling and linking against OpenSSL works]) | |
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99 | echo "Trying link with SSL_LDFLAGS=$SSL_LDFLAGS;" \ |
100 | "SSL_LIBS=$SSL_LIBS; SSL_INCLUDES=$SSL_INCLUDES" >&AS_MESSAGE_LOG_FD | |
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101 | |
102 | save_LIBS="$LIBS" | |
103 | save_LDFLAGS="$LDFLAGS" | |
104 | save_CPPFLAGS="$CPPFLAGS" | |
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105 | LDFLAGS="$LDFLAGS $SSL_LDFLAGS" |
106 | LIBS="$SSL_LIBS $LIBS" | |
107 | CPPFLAGS="$SSL_INCLUDES $CPPFLAGS" | |
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108 | AC_LINK_IFELSE( |
109 | [AC_LANG_PROGRAM([#include <openssl/ssl.h>], [SSL_new(NULL)])], | |
110 | [ | |
111 | AC_MSG_RESULT([yes]) | |
112 | $1 | |
113 | ], [ | |
114 | AC_MSG_RESULT([no]) | |
115 | $2 | |
116 | ]) | |
117 | CPPFLAGS="$save_CPPFLAGS" | |
118 | LDFLAGS="$save_LDFLAGS" | |
119 | LIBS="$save_LIBS" | |
120 | ||
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121 | AC_SUBST([SSL_INCLUDES]) |
122 | AC_SUBST([SSL_LIBS]) | |
123 | AC_SUBST([SSL_LDFLAGS]) | |
70423471 | 124 | ]) |