1 # ===========================================================================
2 # http://www.gnu.org/software/autoconf-archive/ax_check_openssl.html
3 # ===========================================================================
7 # AX_CHECK_OPENSSL([action-if-found[, action-if-not-found]])
11 # Look for OpenSSL in a number of default spots, or in a user-selected
12 # spot (via --with-openssl). Sets
14 # OPENSSL_INCLUDES to the include directives required
15 # OPENSSL_LIBS to the -l directives required
16 # OPENSSL_LDFLAGS to the -L or -R flags required
18 # and calls ACTION-IF-FOUND or ACTION-IF-NOT-FOUND appropriately
20 # This macro sets OPENSSL_INCLUDES such that source files should use the
21 # openssl/ directory in include directives:
23 # #include <openssl/hmac.h>
27 # Copyright (c) 2009,2010 Zmanda Inc. <http://www.zmanda.com/>
28 # Copyright (c) 2009,2010 Dustin J. Mitchell <dustin@zmanda.com>
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
37 AU_ALIAS([CHECK_SSL], [AX_CHECK_OPENSSL])
38 AC_DEFUN([AX_CHECK_OPENSSL], [
40 AC_ARG_WITH([openssl],
41 [AS_HELP_STRING([--with-openssl=DIR],
42 [With openssl support, see http://www.openssl.org])],
46 ssldirs="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr"
54 ssldirs="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /usr"
57 AS_IF([test "${with_openssl}" != "no"], [
59 for ssldir in $ssldirs; do
60 AC_MSG_CHECKING([for openssl/ssl.h in $ssldir])
61 AS_IF([ test -f "$ssldir/include/openssl/ssl.h" ], [
62 OPENSSL_INCLUDES="-I$ssldir/include"
63 OPENSSL_LDFLAGS="-L$ssldir/lib"
64 OPENSSL_LIBS="-lssl -lcrypto"
73 AS_IF([test "${with_openssl}" != "no" && test ! ${found}], [
74 # if pkg-config is installed and openssl has installed a .pc file,
75 # then use that information and don't search ssldirs
76 AC_PATH_PROG([PKG_CONFIG], [pkg-config])
77 if test x"$PKG_CONFIG" != x""; then
78 OPENSSL_LDFLAGS=`$PKG_CONFIG openssl --libs-only-L 2>/dev/null`
80 OPENSSL_LIBS=`$PKG_CONFIG openssl --libs-only-l 2>/dev/null`
81 OPENSSL_INCLUDES=`$PKG_CONFIG openssl --cflags-only-I 2>/dev/null`
87 AS_IF([test "${with_openssl}" != "no" && test ${found}], [
89 # try the preprocessor and linker with our new flags,
90 # being careful not to pollute the global LIBS, LDFLAGS, and CPPFLAGS
92 AC_MSG_CHECKING([whether compiling and linking against OpenSSL works])
93 echo "Trying link with OPENSSL_LDFLAGS=$OPENSSL_LDFLAGS;" \
94 "OPENSSL_LIBS=$OPENSSL_LIBS; OPENSSL_INCLUDES=$OPENSSL_INCLUDES" >&AS_MESSAGE_LOG_FD
97 save_LDFLAGS="$LDFLAGS"
98 save_CPPFLAGS="$CPPFLAGS"
99 LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS"
100 LIBS="$OPENSSL_LIBS $LIBS"
101 CPPFLAGS="$OPENSSL_INCLUDES $CPPFLAGS"
103 [AC_LANG_PROGRAM([#include <openssl/ssl.h>], [SSL_new(NULL)])],
111 CPPFLAGS="$save_CPPFLAGS"
112 LDFLAGS="$save_LDFLAGS"
115 AC_SUBST([OPENSSL_INCLUDES])
116 AC_SUBST([OPENSSL_LIBS])
117 AC_SUBST([OPENSSL_LDFLAGS])