configure.in: Bail out if OpenSSL and mbedTLS are enabled at the same time

[privoxy.git] / configure.in

diff --git a/configure.in b/configure.in
index 7e18567..96adb9d 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -73,6 +73,10 @@ DB2HTML=$withval
 dnl =================================================================
 dnl Application version number
 dnl =================================================================
+dnl CODE_STATUS can be "alpha", "beta", "stable" or "UNRELEASED",
+dnl and will be used for CGI output. Increment version number and
+dnl set status to "UNRELEASED" whenever git differs from the last
+dnl release and no new release is near.
 
 VERSION_MAJOR=3
 VERSION_MINOR=0
@@ -83,11 +87,6 @@ dnl Timestamp (date +%s) used by the mtree-spec target.
 dnl Should be updated before releases but forgetting it isn't critical.
 SOURCE_DATE_EPOCH=1605695571
 
-dnl CODE_STATUS can be "alpha", "beta", "stable" or "UNRELEASED",
-dnl and will be used for CGI output. Increment version number and
-dnl set status to "UNRELEASED" whenever git differs from the last
-dnl release and no new release is near.
-
 dnl =================================================================
 dnl Substitute the version numbers
 dnl =================================================================
@@ -481,6 +480,27 @@ fi
 
 AC_SUBST(PTHREAD_ONLY)
 
+dnl =================================================================
+dnl On most platforms select() does not support fd numbers above
+dnl FD_SETSIZE, as a result Privoxy can't handle more than
+dnl approximately FD_SETSIZE/2 client connections.
+dnl On some platforms the value can be changed at compile time,
+dnl on others it's hardcoded and requires recompilation of the OS.
+dnl Only relevant if select() is actually being used.
+dnl =================================================================
+AC_ARG_WITH(fdsetsize,
+ [  --with-fdsetsize=n  Optimistically redefine FD_SETSIZE with the intend to change the number of connections Privoxy can handle. Dangerous if the platform doesn't support this. Pointless if Privoxy can use poll() instead of select().],
+ [
+   if test "x$withval" != "xyes"; then
+     AC_DEFINE_UNQUOTED(FD_SETSIZE,$with_fdsetsize,[Relevant for select(). Not honoured by all OS.])
+     echo "Redefining FD_SETSIZE to $with_fdsetsize."
+     AC_MSG_WARN(On platforms that don't support FD_SETSIZE redefinition it may cause memory corruption.)
+   else
+     AC_MSG_ERROR(--with-fdsetsize used without value)
+   fi
+   ]
+)
+
 dnl =================================================================
 dnl Support for thread-safe versions of gethostbyaddr, gethostbyname,
 dnl gmtime and localtime
@@ -656,17 +676,6 @@ AC_EGREP_HEADER(socklen_t, sys/socket.h, AC_MSG_RESULT([yes]),
 
 fi
 
-dnl =================================================================
-dnl OS/2 specific
-dnl =================================================================
-
-case "$host" in
-*-os2-emx*) SOCKET_LIB=-lsocket
-;;
-esac
-
-AC_SUBST(SOCKET_LIB)
-
 dnl =================================================================
 dnl Mac OSX specific
 dnl =================================================================
@@ -1076,7 +1085,7 @@ if test $have_pcre = "yes"; then
   LIBS="$LIBS -lpcre -lpcreposix"
 else
   AC_MSG_WARN([You are using the static PCRE code which is out of date and scheduled for removal, for details see:
-    http://sourceforge.net/mailarchive/forum.php?thread_name=20080511195555.2dc6cfdc%40fabiankeil.de&forum_name=ijbswa-developers])
+    https://sourceforge.net/p/ijbswa/mailman/ijbswa-developers/thread/20080511195555.2dc6cfdc@fabiankeil.de/])
   pcre_dyn=no
   # STATIC_PCRE is a name pcre needs to statically link on Windows.
   # Privoxy itself no longer uses it.
@@ -1156,6 +1165,10 @@ AC_HELP_STRING([--without-openssl], [Disable OpenSSL/LibreSSL detection]),
   OPT_OPENSSL=$withval)
 
 if test X"$OPT_OPENSSL" != Xno; then
+   if test X"$OPT_MBEDTLS" != Xno; then
+      AC_MSG_ERROR([OpenSSL and mbedTLS support can't be enabled at the same time])
+   fi
+
   if test "$PORTNAME" != "win32"; then
      AC_CHECK_LIB(crypto, CRYPTO_new_ex_data, [], [AC_MSG_ERROR([library 'crypto' is required for OpenSSL])])
      FOUND_SSL_LIB="no"