Index: acinclude.m4
==================================================================
--- acinclude.m4
+++ acinclude.m4
@@ -133,13 +133,10 @@
 		else
 			AC_MSG_CHECKING([for ssl.h])
 			AC_MSG_RESULT([no])
 			AC_MSG_ERROR([Unable to locate ssl.h])
 		fi
-	else
-		TCLTLS_SSL_CFLAGS="-I${includedir}/openssl"
-		TCLTLS_SSL_INCLUDES="-I${includedir}/openssl"
 	fi
 
 	dnl Set SSL lib files path
 	AC_ARG_WITH([openssl-libdir],
 		AS_HELP_STRING([--with-openssl-libdir=<dir>],
@@ -164,38 +161,33 @@
 	dnl Set SSL lib vars
 	if test ! -z "$openssllibdir"; then
 		if test -f "$openssllibdir/libssl${SHLIB_SUFFIX}"; then
 			if test "${TCLEXT_TLS_STATIC_SSL}" == 'no'; then
 				TCLTLS_SSL_LIBS="-L$openssllibdir -lcrypto -lssl"
-			else
+			#else
 				# Linux and Solaris
-				TCLTLS_SSL_LIBS="-Wl,-Bstatic `$PKG_CONFIG --static --libs crypto ssl` -Wl,-Bdynamic"
+				#TCLTLS_SSL_LIBS="-Wl,-Bstatic `$PKG_CONFIG --static --libs crypto ssl` -Wl,-Bdynamic"
 				# HPUX
 				# -Wl,-a,archive ... -Wl,-a,shared_archive
 			fi
 		else
 			AC_MSG_ERROR([Unable to locate libssl${SHLIB_SUFFIX}])
 		fi
-	else
-		TCLTLS_SSL_LIBS="-lcrypto -lssl"
 	fi
-
-
-	dnl Include config variables in --help list and make available to be substituted via AC_SUBST.
-	AC_ARG_VAR([TCLTLS_SSL_CFLAGS], [C compiler flags for OpenSSL or LibreSSL])
-	AC_ARG_VAR([TCLTLS_SSL_INCLUDES], [C compiler include paths for OpenSSL or LibreSSL])
-	AC_ARG_VAR([TCLTLS_SSL_LIBS], [libraries to pass to the linker for OpenSSL or LibreSSL])
-
 
 	dnl Set location of pkgconfig files
 	AC_ARG_WITH([openssl-pkgconfig],
 		AS_HELP_STRING([--with-openssl-pkgconfig=<dir>],
-			[path to root directory of OpenSSL or LibreSSL pkgconfigdir]
+			[path to pkgconfigdir directory for OpenSSL or LibreSSL]
 		), [
 			opensslpkgconfigdir="$withval"
 		], [
-			opensslpkgconfigdir=''
+			if test -d ${libdir}/../pkgconfig; then
+				opensslpkgconfigdir="$libdir/../pkgconfig"
+			else
+				opensslpkgconfigdir=''
+			fi
 		]
 	)
 	AC_MSG_CHECKING([for OpenSSL pkgconfig])
 	AC_MSG_RESULT($opensslpkgconfigdir)
 
@@ -213,11 +205,11 @@
 		if test -n "${opensslpkgconfigdir}"; then
 			if ! test -f "${opensslpkgconfigdir}/openssl.pc"; then
 				AC_MSG_ERROR([Unable to locate ${opensslpkgconfigdir}/openssl.pc])
 			fi
 
-			PKG_CONFIG_PATH="${opensslpkgconfigdir}${PATH_SEPARATOR}${PKG_CONFIG_PATH}"
+			PKG_CONFIG_PATH="${opensslpkgconfigdir}:${PKG_CONFIG_PATH}"
 			export PKG_CONFIG_PATH
 		fi
 		if test -z "$TCLTLS_SSL_LIBS"; then
 			TCLTLS_SSL_LIBS="`"${PKG_CONFIG}" openssl --libs $pkgConfigExtraArgs`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
 		fi
@@ -227,6 +219,27 @@
 		if test -z "$TCLTLS_SSL_INCLUDES"; then
 			TCLTLS_SSL_INCLUDES="`"${PKG_CONFIG}" openssl --cflags-only-I $pkgConfigExtraArgs`" || AC_MSG_ERROR([Unable to get OpenSSL Configuration])
 		fi
 		PKG_CONFIG_PATH="${PKG_CONFIG_PATH_SAVE}"
 	fi
+
+
+	dnl Fallback settings for OpenSSL includes and libs
+	if test -z "$TCLTLS_SSL_LIBS"; then
+		TCLTLS_SSL_LIBS="-lcrypto -lssl"
+	fi
+	if test -z "$TCLTLS_SSL_CFLAGS"; then
+		TCLTLS_SSL_CFLAGS=""
+	fi
+	if test -z "$TCLTLS_SSL_INCLUDES"; then
+		if test -d /usr/include/openssl; then
+			TCLTLS_SSL_INCLUDES="-I/usr/include/openssl"
+		else
+			TCLTLS_SSL_INCLUDES="-I/usr/include"
+		fi
+	fi
+
+	dnl Include config variables in --help list and make available to be substituted via AC_SUBST.
+	AC_ARG_VAR([TCLTLS_SSL_CFLAGS], [C compiler flags for OpenSSL or LibreSSL])
+	AC_ARG_VAR([TCLTLS_SSL_INCLUDES], [C compiler include paths for OpenSSL or LibreSSL])
+	AC_ARG_VAR([TCLTLS_SSL_LIBS], [libraries to pass to the linker for OpenSSL or LibreSSL])
 ])

Index: configure
==================================================================
--- configure
+++ configure
@@ -1451,12 +1451,12 @@
                           installation
   --with-openssl-libdir=<dir>
                           path to lib directory of OpenSSL or LibreSSL
                           installation
   --with-openssl-pkgconfig=<dir>
-                          path to root directory of OpenSSL or LibreSSL
-                          pkgconfigdir
+                          path to pkgconfigdir directory for OpenSSL or
+                          LibreSSL
 
 Some influential environment variables:
   CC          C compiler command
   CFLAGS      C compiler flags
   LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
@@ -9034,12 +9034,12 @@
 
 printf "%s\n" "#define NO_TLS1 1" >>confdefs.h
 
 			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for disable TLS1 protocol" >&5
 printf %s "checking for disable TLS1 protocol... " >&6; }
-			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: 'yes'" >&5
-printf "%s\n" "'yes'" >&6; }
+			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 		fi
 
 fi
 
 
@@ -9051,12 +9051,12 @@
 
 printf "%s\n" "#define NO_TLS1_1 1" >>confdefs.h
 
 			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for disable TLS1.1 protocol" >&5
 printf %s "checking for disable TLS1.1 protocol... " >&6; }
-			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: 'yes'" >&5
-printf "%s\n" "'yes'" >&6; }
+			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 		fi
 
 fi
 
 
@@ -9068,12 +9068,12 @@
 
 printf "%s\n" "#define NO_TLS1_2 1" >>confdefs.h
 
 			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for disable TLS1.2 protocol" >&5
 printf %s "checking for disable TLS1.2 protocol... " >&6; }
-			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: 'yes'" >&5
-printf "%s\n" "'yes'" >&6; }
+			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 		fi
 
 fi
 
 
@@ -9085,12 +9085,12 @@
 
 printf "%s\n" "#define NO_TLS1_3 1" >>confdefs.h
 
 			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for disable TLS1.3 protocol" >&5
 printf %s "checking for disable TLS1.3 protocol... " >&6; }
-			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: 'yes'" >&5
-printf "%s\n" "'yes'" >&6; }
+			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 		fi
 
 fi
 
 
@@ -9196,11 +9196,11 @@
 			opensslincludedir="$withval"
 
 else $as_nop
 
 			if test ! -z "$openssldir"; then
-				if test -d "${openssldir}/include/openssl"; then
+				if test -f "${openssldir}/include/openssl/ssl.h"; then
 					opensslincludedir="${openssldir}/include/openssl"
 				else
 					opensslincludedir="${openssldir}/include"
 				fi
 			else
@@ -9217,16 +9217,21 @@
 
 		if test ! -z "$opensslincludedir"; then
 		if test -f "$opensslincludedir/ssl.h"; then
 			TCLTLS_SSL_CFLAGS="-I$opensslincludedir"
 			TCLTLS_SSL_INCLUDES="-I$opensslincludedir"
+			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ssl.h" >&5
+printf %s "checking for ssl.h... " >&6; }
+			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+printf "%s\n" "yes" >&6; }
 		else
+			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for ssl.h" >&5
+printf %s "checking for ssl.h... " >&6; }
+			{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5
+printf "%s\n" "no" >&6; }
 			as_fn_error $? "Unable to locate ssl.h" "$LINENO" 5
 		fi
-	else
-		TCLTLS_SSL_CFLAGS="-I${includedir}/openssl"
-		TCLTLS_SSL_INCLUDES="-I${includedir}/openssl"
 	fi
 
 
 # Check whether --with-openssl-libdir was given.
 if test ${with_openssl_libdir+y}
@@ -9256,28 +9261,20 @@
 
 		if test ! -z "$openssllibdir"; then
 		if test -f "$openssllibdir/libssl${SHLIB_SUFFIX}"; then
 			if test "${TCLEXT_TLS_STATIC_SSL}" == 'no'; then
 				TCLTLS_SSL_LIBS="-L$openssllibdir -lcrypto -lssl"
-			else
+			#else
 				# Linux and Solaris
-				TCLTLS_SSL_LIBS="-Wl,-Bstatic `$PKG_CONFIG --static --libs crypto ssl` -Wl,-Bdynamic"
+				#TCLTLS_SSL_LIBS="-Wl,-Bstatic `$PKG_CONFIG --static --libs crypto ssl` -Wl,-Bdynamic"
 				# HPUX
 				# -Wl,-a,archive ... -Wl,-a,shared_archive
 			fi
 		else
 			as_fn_error $? "Unable to locate libssl${SHLIB_SUFFIX}" "$LINENO" 5
 		fi
-	else
-		TCLTLS_SSL_LIBS="-lcrypto -lssl"
 	fi
-
-
-
-
-
-
 
 
 # Check whether --with-openssl-pkgconfig was given.
 if test ${with_openssl_pkgconfig+y}
 then :
@@ -9284,11 +9281,15 @@
   withval=$with_openssl_pkgconfig;
 			opensslpkgconfigdir="$withval"
 
 else $as_nop
 
-			opensslpkgconfigdir=''
+			if test -d ${libdir}/../pkgconfig; then
+				opensslpkgconfigdir="$libdir/../pkgconfig"
+			else
+				opensslpkgconfigdir=''
+			fi
 
 
 fi
 
 	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for OpenSSL pkgconfig" >&5
@@ -9308,11 +9309,11 @@
 		if test -n "${opensslpkgconfigdir}"; then
 			if ! test -f "${opensslpkgconfigdir}/openssl.pc"; then
 				as_fn_error $? "Unable to locate ${opensslpkgconfigdir}/openssl.pc" "$LINENO" 5
 			fi
 
-			PKG_CONFIG_PATH="${opensslpkgconfigdir}${PATH_SEPARATOR}${PKG_CONFIG_PATH}"
+			PKG_CONFIG_PATH="${opensslpkgconfigdir}:${PKG_CONFIG_PATH}"
 			export PKG_CONFIG_PATH
 		fi
 		if test -z "$TCLTLS_SSL_LIBS"; then
 			TCLTLS_SSL_LIBS="`"${PKG_CONFIG}" openssl --libs $pkgConfigExtraArgs`" || as_fn_error $? "Unable to get OpenSSL Configuration" "$LINENO" 5
 		fi
@@ -9322,10 +9323,29 @@
 		if test -z "$TCLTLS_SSL_INCLUDES"; then
 			TCLTLS_SSL_INCLUDES="`"${PKG_CONFIG}" openssl --cflags-only-I $pkgConfigExtraArgs`" || as_fn_error $? "Unable to get OpenSSL Configuration" "$LINENO" 5
 		fi
 		PKG_CONFIG_PATH="${PKG_CONFIG_PATH_SAVE}"
 	fi
+
+
+		if test -z "$TCLTLS_SSL_LIBS"; then
+		TCLTLS_SSL_LIBS="-lcrypto -lssl"
+	fi
+	if test -z "$TCLTLS_SSL_CFLAGS"; then
+		TCLTLS_SSL_CFLAGS=""
+	fi
+	if test -z "$TCLTLS_SSL_INCLUDES"; then
+		if test -d /usr/include/openssl; then
+			TCLTLS_SSL_INCLUDES="-I/usr/include/openssl"
+		else
+			TCLTLS_SSL_INCLUDES="-I/usr/include"
+		fi
+	fi
+
+
+
+
 
 
 #--------------------------------------------------------------------
 # Shared libraries and static libraries have different names.
 # Also, windows libraries and unix libraries have different names.