| NingSun | 0c89b3c | 2018-02-08 08:34:03 -0800 | [diff] [blame] | 1 | AC_DEFUN([ACX_OPENSSL],[ |
| 2 | AC_ARG_WITH(openssl, |
| 3 | AC_HELP_STRING([--with-openssl=PATH],[Specify prefix of path of OpenSSL]), |
| 4 | [ |
| 5 | OPENSSL_PATH="$withval" |
| 6 | ], |
| 7 | [ |
| 8 | OPENSSL_PATH="/usr/local" |
| 9 | ]) |
| 10 | |
| 11 | AC_MSG_CHECKING(what are the OpenSSL includes) |
| 12 | OPENSSL_INCLUDES="-I$OPENSSL_PATH/include" |
| 13 | AC_MSG_RESULT($OPENSSL_INCLUDES) |
| 14 | |
| 15 | AC_MSG_CHECKING(what are the OpenSSL libs) |
| 16 | OPENSSL_LIBS="-L$OPENSSL_PATH/lib -lcrypto" |
| 17 | AC_MSG_RESULT($OPENSSL_LIBS) |
| 18 | |
| 19 | tmp_CPPFLAGS=$CPPFLAGS |
| 20 | tmp_LIBS=$LIBS |
| 21 | |
| 22 | CPPFLAGS="$CPPFLAGS $OPENSSL_INCLUDES" |
| 23 | LIBS="$OPENSSL_LIBS $LIBS" |
| 24 | |
| 25 | AC_CHECK_HEADERS([openssl/ssl.h],,[AC_MSG_ERROR([Can't find OpenSSL headers])]) |
| 26 | AC_CHECK_LIB(crypto, BN_new,,[AC_MSG_ERROR([Can't find OpenSSL library])]) |
| 27 | |
| 28 | AC_MSG_CHECKING([for OpenSSL version]) |
| 29 | CHECK_OPENSSL_VERSION=m4_format(0x%02x%02x%02x000L, $1, $2, $3) |
| 30 | AC_LANG_PUSH([C]) |
| 31 | AC_RUN_IFELSE([ |
| 32 | AC_LANG_SOURCE([[ |
| 33 | #include <openssl/ssl.h> |
| 34 | #include <openssl/opensslv.h> |
| 35 | int main() |
| 36 | { |
| 37 | #ifndef OPENSSL_VERSION_NUMBER |
| 38 | return -1; |
| 39 | #endif |
| 40 | #if OPENSSL_VERSION_NUMBER >= $CHECK_OPENSSL_VERSION |
| 41 | return 0; |
| 42 | #else |
| 43 | return 1; |
| 44 | #endif |
| 45 | } |
| 46 | ]]) |
| 47 | ],[ |
| 48 | AC_MSG_RESULT([>= $1.$2.$3]) |
| 49 | ],[ |
| 50 | AC_MSG_RESULT([< $1.$2.$3]) |
| 51 | AC_MSG_ERROR([OpenSSL library too old ($1.$2.$3 or later required)]) |
| 52 | ],[]) |
| 53 | AC_LANG_POP([C]) |
| 54 | |
| 55 | CPPFLAGS=$tmp_CPPFLAGS |
| 56 | LIBS=$tmp_LIBS |
| 57 | |
| 58 | AC_SUBST(OPENSSL_INCLUDES) |
| 59 | AC_SUBST(OPENSSL_LIBS) |
| 60 | ]) |