diff --git a/build-ceph-deb-native.sh b/build-ceph-deb-native.sh
index a4c12c0..8b3a6d2 100755
--- a/build-ceph-deb-native.sh
+++ b/build-ceph-deb-native.sh
@@ -46,7 +46,11 @@ if command -v ccache >/dev/null; then
   if [ ! -e "$CCACHE_DIR" ]; then
     echo "$0: have ccache but cache directory does not exist: $CCACHE_DIR" 1>&2
   else
-    set -- CC='ccache gcc' CXX='ccache g++'
+    CCACHE_PATH="$PATH"
+    for d in /usr/{lib64,lib,lib32,libexec}/ccache{,/bin} ; do
+      test -d "$d" && test -x "$d/g++" && CCACHE_PATH="$d:$PATH" && break
+    done
+    export PATH="$CCACHE_PATH"
   fi
 else
   echo "$0: no ccache found, compiles will be slower." 1>&2
diff --git a/build-ceph-deb.sh b/build-ceph-deb.sh
index 146b0b3..cf21eb6 100755
--- a/build-ceph-deb.sh
+++ b/build-ceph-deb.sh
@@ -46,7 +46,11 @@ if command -v ccache >/dev/null; then
   if [ ! -e "$CCACHE_DIR" ]; then
     echo "$0: have ccache but cache directory does not exist: $CCACHE_DIR" 1>&2
   else
-    set -- CC='ccache gcc' CXX='ccache g++'
+    CCACHE_PATH="$PATH"
+    for d in /usr/{lib64,lib,lib32,libexec}/ccache{,/bin} ; do
+      test -d "$d" && test -x "$d/g++" && CCACHE_PATH="$d:$PATH" && break
+    done
+    export PATH="$CCACHE_PATH"
   fi
 else
   echo "$0: no ccache found, compiles will be slower." 1>&2
diff --git a/build-ceph-gcov.sh b/build-ceph-gcov.sh
index 31ccf8a..138e9dd 100755
--- a/build-ceph-gcov.sh
+++ b/build-ceph-gcov.sh
@@ -44,7 +44,11 @@ if command -v ccache >/dev/null; then
   if [ ! -e "$CCACHE_DIR" ]; then
     echo "$0: have ccache but cache directory does not exist: $CCACHE_DIR" 1>&2
   else
-    set -- CC='ccache gcc' CXX='ccache g++'
+    CCACHE_PATH="$PATH"
+    for d in /usr/{lib64,lib,lib32,libexec}/ccache{,/bin} ; do
+      test -d "$d" && test -x "$d/g++" && CCACHE_PATH="$d:$PATH" && break
+    done
+    export PATH="$CCACHE_PATH"
   fi
 else
   echo "$0: no ccache found, compiles will be slower." 1>&2
diff --git a/build-ceph-notcmalloc.sh b/build-ceph-notcmalloc.sh
index 049720e..bc31da9 100755
--- a/build-ceph-notcmalloc.sh
+++ b/build-ceph-notcmalloc.sh
@@ -45,7 +45,11 @@ if command -v ccache >/dev/null; then
   if [ ! -e "$CCACHE_DIR" ]; then
     echo "$0: have ccache but cache directory does not exist: $CCACHE_DIR" 1>&2
   else
-    set -- CC='ccache gcc' CXX='ccache g++'
+    CCACHE_PATH="$PATH"
+    for d in /usr/{lib64,lib,lib32,libexec}/ccache{,/bin} ; do
+      test -d "$d" && test -x "$d/g++" && CCACHE_PATH="$d:$PATH" && break
+    done
+    export PATH="$CCACHE_PATH"
   fi
 else
   echo "$0: no ccache found, compiles will be slower." 1>&2
diff --git a/build-ceph-rpm.sh b/build-ceph-rpm.sh
index b1b3818..8daab87 100755
--- a/build-ceph-rpm.sh
+++ b/build-ceph-rpm.sh
@@ -72,7 +72,11 @@ if command -v ccache >/dev/null; then
   if [ ! -e "$CCACHE_DIR" ]; then
     echo "$0: have ccache but cache directory does not exist: $CCACHE_DIR" 1>&2
   else
-    set -- CC='ccache gcc' CXX='ccache g++'
+    CCACHE_PATH="$PATH"
+    for d in /usr/{lib64,lib,lib32,libexec}/ccache{,/bin} ; do
+      test -d "$d" && test -x "$d/g++" && CCACHE_PATH="$d:$PATH" && break
+    done
+    export PATH="$CCACHE_PATH"
   fi
 else
   echo "$0: no ccache found, compiles will be slower." 1>&2
diff --git a/build-ceph.sh b/build-ceph.sh
index 006a560..6680fbb 100755
--- a/build-ceph.sh
+++ b/build-ceph.sh
@@ -50,7 +50,11 @@ if command -v ccache >/dev/null; then
   if [ ! -e "$CCACHE_DIR" ]; then
     echo "$0: have ccache but cache directory does not exist: $CCACHE_DIR" 1>&2
   else
-    set -- CC='ccache gcc' CXX='ccache g++'
+    CCACHE_PATH="$PATH"
+    for d in /usr/{lib64,lib,lib32,libexec}/ccache{,/bin} ; do
+      test -d "$d" && test -x "$d/g++" && CCACHE_PATH="$d:$PATH" && break
+    done
+    export PATH="$CCACHE_PATH"
   fi
 else
   echo "$0: no ccache found, compiles will be slower." 1>&2
diff --git a/build-kernel-deb.sh b/build-kernel-deb.sh
index 75c9834..a9e93f0 100755
--- a/build-kernel-deb.sh
+++ b/build-kernel-deb.sh
@@ -17,7 +17,11 @@ if command -v ccache >/dev/null; then
   if [ ! -e "$CCACHE_DIR" ]; then
     echo "$0: have ccache but cache directory does not exist: $CCACHE_DIR" 1>&2
   else
-    set -- CC='ccache gcc' CXX='ccache g++'
+    CCACHE_PATH="$PATH"
+    for d in /usr/{lib64,lib,lib32,libexec}/ccache{,/bin} ; do
+      test -d "$d" && test -x "$d/g++" && CCACHE_PATH="$d:$PATH" && break
+    done
+    export PATH="$CCACHE_PATH"
   fi
 else
   echo "$0: no ccache found, compiles will be slower." 1>&2
diff --git a/build-kernel-raw.sh b/build-kernel-raw.sh
index 76a2bce..142e840 100755
--- a/build-kernel-raw.sh
+++ b/build-kernel-raw.sh
@@ -19,7 +19,11 @@ if command -v ccache >/dev/null; then
   if [ ! -e "$CCACHE_DIR" ]; then
     echo "$0: have ccache but cache directory does not exist: $CCACHE_DIR" 1>&2
   else
-    set -- CC='ccache gcc' CXX='ccache g++'
+    CCACHE_PATH="$PATH"
+    for d in /usr/{lib64,lib,lib32,libexec}/ccache{,/bin} ; do
+      test -d "$d" && test -x "$d/g++" && CCACHE_PATH="$d:$PATH" && break
+    done
+    export PATH="$CCACHE_PATH"
   fi
 else
   echo "$0: no ccache found, compiles will be slower." 1>&2
diff --git a/build-kernel-rpm.sh b/build-kernel-rpm.sh
index 0141ac6..cb0e2f5 100755
--- a/build-kernel-rpm.sh
+++ b/build-kernel-rpm.sh
@@ -40,7 +40,11 @@ if command -v ccache >/dev/null; then
   if [ ! -e "$CCACHE_DIR" ]; then
     echo "$0: have ccache but cache directory does not exist: $CCACHE_DIR" 1>&2
   else
-    set -- CC='ccache gcc' CXX='ccache g++'
+    CCACHE_PATH="$PATH"
+    for d in /usr/{lib64,lib,lib32,libexec}/ccache{,/bin} ; do
+      test -d "$d" && test -x "$d/g++" && CCACHE_PATH="$d:$PATH" && break
+    done
+    export PATH="$CCACHE_PATH"
   fi
 else
   echo "$0: no ccache found, compiles will be slower." 1>&2