diff --git a/configure b/configure
index 573deb138e..e3a87f8cca 100755
--- a/configure
+++ b/configure
@@ -21166,8 +21166,14 @@ fi
         ;;
 
     *-*-solaris2* )
-                if test "$ac_cv_sizeof_void_p" = 8 -a -d "/usr/lib/64"; then
+                                if test "$ac_cv_sizeof_void_p" = 8 -a -d "/usr/lib/64"; then
             wx_cv_std_libpath="lib/64"
+            if test -n "$PKG_CONFIG_PATH"; then
+                PKG_CONFIG_PATH="/usr/$wx_cv_std_libpath/pkgconfig:$PKG_CONFIG_PATH"
+            else
+                PKG_CONFIG_PATH="/usr/$wx_cv_std_libpath/pkgconfig"
+            fi
+            export PKG_CONFIG_PATH
         fi
         ;;
 
diff --git a/configure.in b/configure.in
index befdb3b58d..9fed41a9ae 100644
--- a/configure.in
+++ b/configure.in
@@ -2212,8 +2212,16 @@ case "${host}" in
 
     *-*-solaris2* )
         dnl use ../lib or ../lib/64 depending on the size of void*
+        dnl The pkg-config path should be adjusted for 64-bit.
+        dnl see https://docs.oracle.com/cd/E37838_01/html/E66175/gplhi.html
         if test "$ac_cv_sizeof_void_p" = 8 -a -d "/usr/lib/64"; then
             wx_cv_std_libpath="lib/64"
+            if test -n "$PKG_CONFIG_PATH"; then
+                PKG_CONFIG_PATH="/usr/$wx_cv_std_libpath/pkgconfig:$PKG_CONFIG_PATH"
+            else
+                PKG_CONFIG_PATH="/usr/$wx_cv_std_libpath/pkgconfig"
+            fi
+            export PKG_CONFIG_PATH
         fi
         ;;