diff --git a/cmake/FindInterbase.cmake b/cmake/FindInterbase.cmake
index e9303f8d265..aaaf11500fd 100644
--- a/cmake/FindInterbase.cmake
+++ b/cmake/FindInterbase.cmake
@@ -21,6 +21,12 @@
 # ``Interbase::Interbase``
 #     The Interbase client library
 
+if(NOT DEFINED Interbase_ROOT)
+    if(DEFINED ENV{Interbase_ROOT})
+        set(Interbase_ROOT "$ENV{Interbase_ROOT}")
+    endif()
+endif()
+
 find_path(Interbase_INCLUDE_DIR
           NAMES ibase.h
           HINTS "${Interbase_INCLUDEDIR}" "${Interbase_ROOT}/include"
diff --git a/cmake/FindMySQL.cmake b/cmake/FindMySQL.cmake
index 3dedca85759..94a8d27ae50 100644
--- a/cmake/FindMySQL.cmake
+++ b/cmake/FindMySQL.cmake
@@ -40,7 +40,11 @@
 #     The mysql client library
 
 if(NOT DEFINED MySQL_ROOT)
-    find_package(PkgConfig QUIET)
+    if(DEFINED ENV{MySQL_ROOT})
+        set(MySQL_ROOT "$ENV{MySQL_ROOT}")
+    else()
+        find_package(PkgConfig QUIET)
+    endif()
 endif()
 if(PkgConfig_FOUND AND NOT DEFINED MySQL_ROOT)
     pkg_check_modules(PC_MySQL QUIET "mysqlclient")
diff --git a/cmake/FindOracle.cmake b/cmake/FindOracle.cmake
index 98819980b1a..c27fe0d2e6e 100644
--- a/cmake/FindOracle.cmake
+++ b/cmake/FindOracle.cmake
@@ -21,6 +21,12 @@
 # ``Oracle::Oracle``
 #     The oracle instant client library
 
+if(NOT DEFINED Oracle_ROOT)
+    if(DEFINED ENV{Oracle_ROOT})
+        set(Oracle_ROOT "$ENV{Oracle_ROOT}")
+    endif()
+endif()
+
 find_path(Oracle_INCLUDE_DIR
   NAMES oci.h
   HINTS ${Oracle_INCLUDE_DIR} "${Oracle_ROOT}" "${Oracle_ROOT}/include" "${Oracle_ROOT}/sdk/include"