diff --git a/Makefile b/Makefile
index 884faaf..6b262f2 100644
--- a/Makefile
+++ b/Makefile
@@ -5,6 +5,7 @@ USE_PODMAN?=0
 LUA_VERSION?=5.4.3
 USE_LUA?=0
 USE_PROMETHEUS?=0
+CPU?=0
 VERSION=$(shell curl -s http://git.haproxy.org/git/haproxy-${MAINVERSION}.git/refs/tags/ | sed -n 's:.*>\(.*\)</a>.*:\1:p' | sed 's/^.//' | sort -rV | head -1)
 ifeq ("${VERSION}","./")
 		VERSION="${MAINVERSION}.0"
@@ -17,6 +18,16 @@ ifeq ($(NO_SUDO),1)
 else
 	SUDO=sudo
 endif
+
+HAS_DNF:=$(shell command -v dnf 2> /dev/null)
+ifdef HAS_DNF
+	PACKAGE_MANAGER=dnf
+	INSTALL_FLAGS=-y --allowerasing
+else
+	PACKAGE_MANAGER=yum
+	INSTALL_FLAGS=-y
+endif
+
 ifeq ($(USE_PODMAN),1)
 	CONTAINER_RUNTIME=podman
 else
@@ -28,7 +39,7 @@ all: build
 install_prereq:
 	# Check if the prereqs are there before trying to sudo
 	rpm -q $(PREREQ) || \
-		$(SUDO) yum install -y $(PREREQ)
+		$(SUDO) $(PACKAGE_MANAGER) install $(INSTALL_FLAGS) $(PREREQ)
 
 clean:
 	rm -f ./SOURCES/haproxy-${VERSION}.tar.gz
@@ -76,6 +87,7 @@ build: $(build_stages)
 	--define "mainversion ${MAINVERSION}" \
 	--define "version ${VERSION}" \
 	--define "release ${RELEASE}" \
+	--define "_cpu ${CPU}" \
 	--define "_extra_cflags ${EXTRA_CFLAGS}" \
 	--define "_topdir %(pwd)/rpmbuild" \
 	--define "_builddir %{_topdir}/BUILD" \
diff --git a/README.md b/README.md
index fd7ae1a..376088f 100644
--- a/README.md
+++ b/README.md
@@ -37,13 +37,16 @@ Perform the following steps on a build box as a regular user.
 ### With Prometheus Module support
     make USE_PROMETHEUS=1
 
-### Without sudo for yum (for building in Docker)
+### Without `sudo` for `yum` (for building in Docker)
     make NO_SUDO=1
 
 ### With a custom release iteration, e.g. '2' (default '1'):
     make RELEASE=2
 
-### Custom CFLAGS, e.g. '-O0' to disable optimization for debug:
+### With a custom target `CPU`, e.g. `armv81`
+    make CPU=armv81
+
+### Custom `CFLAGS`, e.g. '-O0' to disable optimization for debug:
     make EXTRA_CFLAGS=-O0
 
 Resulting RPMs will be in `/opt/rpm-haproxy/rpmbuild/RPMS/x86_64/`
diff --git a/SPECS/haproxy.spec b/SPECS/haproxy.spec
index c6a2430..de153e3 100644
--- a/SPECS/haproxy.spec
+++ b/SPECS/haproxy.spec
@@ -120,7 +120,12 @@ USE_PROMEX="USE_PROMEX=1"
   CFLAGS="$CFLAGS %{_extra_cflags}"
 %endif
 
-%{__make} -j$RPM_BUILD_NCPUS %{?_smp_mflags} ${USE_LUA} CPU="generic" TARGET="linux-glibc" ${systemd_opts} ${pcre_opts} USE_OPENSSL=1 USE_ZLIB=1 ${regparm_opts} ADDINC="$CFLAGS" USE_LINUX_TPROXY=1 USE_THREAD=1 USE_TFO=${USE_TFO} USE_NS=${USE_NS} ${USE_PROMEX} ADDLIB="%{__global_ldflags}"
+CPU="generic"
+%if "%{_cpu}" != "0"
+  CPU="%{_cpu}"
+%endif
+
+%{__make} -j$RPM_BUILD_NCPUS %{?_smp_mflags} ${USE_LUA} CPU="${CPU}" TARGET="linux-glibc" ${systemd_opts} ${pcre_opts} USE_OPENSSL=1 USE_ZLIB=1 ${regparm_opts} ADDINC="$CFLAGS" USE_LINUX_TPROXY=1 USE_THREAD=1 USE_TFO=${USE_TFO} USE_NS=${USE_NS} ${USE_PROMEX} ADDLIB="%{__global_ldflags}"
 
 %{__make} admin/halog/halog OPTIMIZE="%{optflags} %{__global_ldflags}"