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 # 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 17 # 18 # and calls ACTION-IF-FOUND or ACTION-IF-NOT-FOUND appropriately 19 # 20 # This macro sets OPENSSL_INCLUDES such that source files should use the 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 (a] 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"$PKG_CONFIG" != x""; then 56 OPENSSL_LDFLAGS=`$PKG_CONFIG openssl --libs-only-L 2>/dev/null` 57 if test $? = 0; then 58 OPENSSL_LIBS=`$PKG_CONFIG openssl --libs-only-l 2>/dev/null` 59 OPENSSL_INCLUDES=`$PKG_CONFIG openssl --cflags-only-I 2>/dev/null` 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 76 OPENSSL_INCLUDES= 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 80 OPENSSL_INCLUDES="-I$ssldir/include" 81 OPENSSL_LDFLAGS="-L$ssldir/lib" 82 OPENSSL_LIBS="-lssl -lcrypto" 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]) 99 echo "Trying link with OPENSSL_LDFLAGS=$OPENSSL_LDFLAGS;" \ 100 "OPENSSL_LIBS=$OPENSSL_LIBS; OPENSSL_INCLUDES=$OPENSSL_INCLUDES" >&AS_MESSAGE_LOG_FD 101 102 save_LIBS="$LIBS" 103 save_LDFLAGS="$LDFLAGS" 104 save_CPPFLAGS="$CPPFLAGS" 105 LDFLAGS="$LDFLAGS $OPENSSL_LDFLAGS" 106 LIBS="$OPENSSL_LIBS $LIBS" 107 CPPFLAGS="$OPENSSL_INCLUDES $CPPFLAGS" 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" 120 121 AC_SUBST([OPENSSL_INCLUDES]) 122 AC_SUBST([OPENSSL_LIBS]) 123 AC_SUBST([OPENSSL_LDFLAGS]) 124 ]) 125
