diff --git a/etc/config.csh/adios1 b/etc/config.csh/adios1
index 108a8ee6f6..5457d09e35 100644
--- a/etc/config.csh/adios1
+++ b/etc/config.csh/adios1
@@ -42,7 +42,7 @@ if ($?FOAM_VERBOSE && $?prompt) then
     echo "Using adios ($adios1_version)  ->  $ADIOS1_ARCH_PATH"
 endif
 
-# - only add if the directory really exists
+# Only add to PATH if the directory really exists
 _foamAddLibAuto $ADIOS1_ARCH_PATH
 if ($status == 0) then
     _foamAddPath $ADIOS1_ARCH_PATH/bin
diff --git a/etc/config.csh/adios2 b/etc/config.csh/adios2
index 81f2196204..8265ed0e75 100644
--- a/etc/config.csh/adios2
+++ b/etc/config.csh/adios2
@@ -28,7 +28,7 @@ if ($?FOAM_VERBOSE && $?prompt) then
     echo "Using adios ($adios2_version)  ->  $ADIOS2_ARCH_PATH"
 endif
 
-# - only add if the directory really exists
+# Only add to PATH if the directory really exists
 _foamAddLibAuto $ADIOS2_ARCH_PATH
 if ($status == 0) then
     _foamAddPath $ADIOS2_ARCH_PATH/bin
diff --git a/etc/config.sh/adios1 b/etc/config.sh/adios1
index f9393fe03b..330da7dceb 100644
--- a/etc/config.sh/adios1
+++ b/etc/config.sh/adios1
@@ -44,8 +44,8 @@ fi
 
 if command -v _foamAddLibAuto > /dev/null 2>&1
 then
-    # Normal sourcing (not makeADIOS)
-    # - but only add if the directory really exists
+    # Normal sourcing (not makeAdios1)
+    # Only add to PATH if the directory really exists
 
     if _foamAddLibAuto $ADIOS1_ARCH_PATH
     then
diff --git a/etc/config.sh/adios2 b/etc/config.sh/adios2
index 515d586498..0c592fdc4a 100644
--- a/etc/config.sh/adios2
+++ b/etc/config.sh/adios2
@@ -32,8 +32,8 @@ fi
 
 if command -v _foamAddLibAuto > /dev/null 2>&1
 then
-    # Normal sourcing (not makeADIOS)
-    # - but only add if the directory really exists
+    # Normal sourcing (not makeAdios2)
+    # Only add to PATH if the directory really exists
 
     if _foamAddLibAuto $ADIOS2_ARCH_PATH
     then
diff --git a/etc/config.sh/petsc b/etc/config.sh/petsc
index 3104702764..d6b0e787a5 100644
--- a/etc/config.sh/petsc
+++ b/etc/config.sh/petsc
@@ -36,8 +36,9 @@ then
     echo "Using petsc ($petsc_version)  ->  $PETSC_ARCH_PATH" 1>&2
 fi
 
-if command -v _foamAddLibAuto > /dev/null 2>&1  # Normal sourcing (not makePETSC)
+if command -v _foamAddLibAuto > /dev/null 2>&1
 then
+    # Normal sourcing (not makePETSC)
 
     _foamAddLibAuto $PETSC_ARCH_PATH
 
diff --git a/wmake/scripts/have_adios2 b/wmake/scripts/have_adios2
index 7a09259acd..e293e04cb2 100644
--- a/wmake/scripts/have_adios2
+++ b/wmake/scripts/have_adios2
@@ -19,7 +19,7 @@
 #     ADIOS2_ARCH_PATH
 #
 # Functions provided
-#     have_adios2, no_adios2, echo_adios2
+#     have_adios2, no_adios2, echo_adios2, hint_adios2
 #
 # Variables set on success
 #     HAVE_ADIOS2
@@ -50,6 +50,22 @@ echo_adios2()
 }
 
 
+# Provide hint for enabling
+hint_adios2()
+{
+    /bin/cat<<INFORMATION 1>&2
+==> adios2 not found?
+
+Enable in the OpenFOAM etc/bashrc, define manually or try with the
+following (POSIX shell):
+
+    eval \$(foamEtcFile -sh -config adios2 -- -force)
+
+==
+INFORMATION
+}
+
+
 # On success, return 0 and export variables
 # -> HAVE_ADIOS2, ADIOS2_INC_DIR, ADIOS2_LIB_DIR
 have_adios2()
diff --git a/wmake/scripts/have_petsc b/wmake/scripts/have_petsc
index ead138b78e..dd4764666c 100644
--- a/wmake/scripts/have_petsc
+++ b/wmake/scripts/have_petsc
@@ -19,7 +19,7 @@
 #     PETSC_ARCH_PATH
 #
 # Functions provided
-#     have_petsc, no_petsc, echo_petsc
+#     have_petsc, no_petsc, echo_petsc, hint_petsc
 #
 # Variables set on success
 #     HAVE_PETSC
@@ -50,6 +50,22 @@ echo_petsc()
 }
 
 
+# Provide hint for enabling
+hint_petsc()
+{
+    /bin/cat<<INFORMATION 1>&2
+==> petsc not found?
+
+Enable in the OpenFOAM etc/bashrc, define manually or try with the
+following (POSIX shell):
+
+    eval \$(foamEtcFile -sh -config petsc -- -force)
+
+==
+INFORMATION
+}
+
+
 # On success, return 0 and export variables
 # -> HAVE_PETSC, PETSC_INC_DIR, PETSC_LIB_DIR
 have_petsc()