diff --git a/sys-cluster/ceph/ceph-18.2.4-r4.ebuild b/sys-cluster/ceph/ceph-18.2.4-r4.ebuild
index 5ff77f4bdc823..a8425f122af11 100644
--- a/sys-cluster/ceph/ceph-18.2.4-r4.ebuild
+++ b/sys-cluster/ceph/ceph-18.2.4-r4.ebuild
@@ -6,7 +6,7 @@ EAPI=8
 PYTHON_COMPAT=( python3_{10..12} )
 LUA_COMPAT=( lua5-{3..4} )
 
-inherit check-reqs bash-completion-r1 cmake flag-o-matic lua-single \
+inherit check-reqs bash-completion-r1 cmake flag-o-matic lua-single multiprocessing \
 		python-r1 udev readme.gentoo-r1 toolchain-funcs systemd tmpfiles
 
 XSIMD_HASH="aeec9c872c8b475dedd7781336710f2dd2666cb2"
@@ -414,6 +414,7 @@ src_configure() {
 }
 
 src_compile() {
+	export CMAKE_BUILD_PARALLEL_LEVEL=$(makeopts_jobs)
 	cmake_build all
 
 	# we have to do this here to prevent from building everything multiple times
diff --git a/sys-cluster/ceph/ceph-19.2.0-r3.ebuild b/sys-cluster/ceph/ceph-19.2.0-r3.ebuild
index ed6a7ba4d1718..bd46c46606670 100644
--- a/sys-cluster/ceph/ceph-19.2.0-r3.ebuild
+++ b/sys-cluster/ceph/ceph-19.2.0-r3.ebuild
@@ -6,7 +6,7 @@ EAPI=8
 PYTHON_COMPAT=( python3_{10..12} )
 LUA_COMPAT=( lua5-{3..4} )
 
-inherit check-reqs bash-completion-r1 cmake flag-o-matic lua-single \
+inherit check-reqs bash-completion-r1 cmake flag-o-matic lua-single multiprocessing \
 		python-r1 udev readme.gentoo-r1 toolchain-funcs systemd tmpfiles
 
 XSIMD_HASH="aeec9c872c8b475dedd7781336710f2dd2666cb2"
@@ -423,6 +423,7 @@ src_configure() {
 }
 
 src_compile() {
+	export CMAKE_BUILD_PARALLEL_LEVEL=$(makeopts_jobs)
 	cmake_build all
 
 	# we have to do this here to prevent from building everything multiple times
diff --git a/sys-cluster/ceph/ceph-19.2.1-r2.ebuild b/sys-cluster/ceph/ceph-19.2.1-r2.ebuild
index 2b979e4ae6b7f..a8e09636b8bbc 100644
--- a/sys-cluster/ceph/ceph-19.2.1-r2.ebuild
+++ b/sys-cluster/ceph/ceph-19.2.1-r2.ebuild
@@ -6,7 +6,7 @@ EAPI=8
 PYTHON_COMPAT=( python3_{10..12} )
 LUA_COMPAT=( lua5-{3..4} )
 
-inherit check-reqs bash-completion-r1 cmake flag-o-matic lua-single \
+inherit check-reqs bash-completion-r1 cmake flag-o-matic lua-single multiprocessing \
 		python-r1 udev readme.gentoo-r1 toolchain-funcs systemd tmpfiles
 
 XSIMD_HASH="aeec9c872c8b475dedd7781336710f2dd2666cb2"
@@ -430,6 +430,7 @@ src_configure() {
 }
 
 src_compile() {
+	export CMAKE_BUILD_PARALLEL_LEVEL=$(makeopts_jobs)
 	cmake_build all
 
 	# we have to do this here to prevent from building everything multiple times