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dnl Check to find the mbed TLS headers/libraries
AC_DEFUN([ss_MBEDTLS], [
AC_ARG_WITH(mbedtls, AS_HELP_STRING([--with-mbedtls=DIR], [mbed TLS base directory, or:]), [mbedtls="$withval" CFLAGS="$CFLAGS -I$withval/include" LDFLAGS="$LDFLAGS -L$withval/lib"] )
AC_ARG_WITH(mbedtls-include, AS_HELP_STRING([--with-mbedtls-include=DIR], [mbed TLS headers directory (without trailing /mbedtls)]), [mbedtls_include="$withval" CFLAGS="$CFLAGS -I$withval"] )
AC_ARG_WITH(mbedtls-lib, AS_HELP_STRING([--with-mbedtls-lib=DIR], [mbed TLS library directory]), [mbedtls_lib="$withval" LDFLAGS="$LDFLAGS -L$withval"] )
AC_CHECK_LIB(mbedcrypto, mbedtls_cipher_setup, [LIBS="-lmbedcrypto $LIBS"], [AC_MSG_ERROR([mbed TLS libraries not found.])] )
AC_MSG_CHECKING([whether mbedtls supports Cipher Feedback mode or not]) AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[ #include <mbedtls/config.h> ]], [[ #ifndef MBEDTLS_CIPHER_MODE_CFB #error Cipher Feedback mode a.k.a CFB not supported by your mbed TLS. #endif ]] )], [AC_MSG_RESULT([ok])], [AC_MSG_ERROR([MBEDTLS_CIPHER_MODE_CFB required])] )
AC_MSG_CHECKING([whether mbedtls supports the ARC4 stream cipher or not]) AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[ #include <mbedtls/config.h> ]], [[ #ifndef MBEDTLS_ARC4_C #error the ARC4 stream cipher not supported by your mbed TLS. #endif ]] )], [AC_MSG_RESULT([ok])], [AC_MSG_WARN([We will continue without ARC4 stream cipher support, MBEDTLS_ARC4_C required])] )
AC_MSG_CHECKING([whether mbedtls supports the Blowfish block cipher or not]) AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[ #include <mbedtls/config.h> ]], [[ #ifndef MBEDTLS_BLOWFISH_C #error the Blowfish block cipher not supported by your mbed TLS. #endif ]] )], [AC_MSG_RESULT([ok])], [AC_MSG_WARN([We will continue without Blowfish block cipher support, MBEDTLS_BLOWFISH_C required])] )
AC_MSG_CHECKING([whether mbedtls supports the Camellia block cipher or not]) AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[ #include <mbedtls/config.h> ]], [[ #ifndef MBEDTLS_CAMELLIA_C #error the Camellia block cipher not supported by your mbed TLS. #endif ]] )], [AC_MSG_RESULT([ok])], [AC_MSG_WARN([We will continue without Camellia block cipher support, MBEDTLS_CAMELLIA_C required])] ) ])
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