diff --git a/meta-openembedded/meta-oe/recipes-benchmark/iperf3/iperf3/0001-configure.ac-check-for-CPP-prog.patch b/meta-openembedded/meta-oe/recipes-benchmark/iperf3/iperf3/0001-configure.ac-check-for-CPP-prog.patch
new file mode 100644
index 0000000..739fd20
--- /dev/null
+++ b/meta-openembedded/meta-oe/recipes-benchmark/iperf3/iperf3/0001-configure.ac-check-for-CPP-prog.patch
@@ -0,0 +1,31 @@
+From cc4499cd4cfcb655fc44c3f3571eee20663dafde Mon Sep 17 00:00:00 2001
+From: Andrey Zhizhikin <andrey.z@gmail.com>
+Date: Wed, 3 Feb 2021 20:44:34 +0000
+Subject: [PATCH] configure.ac: check for CPP prog
+
+Absence of check for CPP_PROG causes following build errors:
+| checking TCP_CONGESTION socket option... ../git/configure: line 14427: CPP: command not found
+| ../git/configure: line 14553: ac_fn_c_try_cpp: command not found
+| ../git/configure: line 14553: ac_fn_c_try_cpp: command not found
+
+Upstream-Status: Pending
+Signed-off-by: Andrey Zhizhikin <andrey.z@gmail.com>
+---
+ configure.ac | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/configure.ac b/configure.ac
+index 939cf0a..f75b398 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -47,6 +47,7 @@ AC_CANONICAL_HOST
+ # Checks for tools: c compiler, ranlib (used for creating static libraries),
+ # symlinks and libtool
+ AC_PROG_CC
++AC_PROG_CPP
+ AC_PROG_RANLIB
+ AC_PROG_LN_S
+ AC_PROG_LIBTOOL
+-- 
+2.17.1
+
diff --git a/meta-openembedded/meta-oe/recipes-benchmark/iperf3/iperf3_3.9.bb b/meta-openembedded/meta-oe/recipes-benchmark/iperf3/iperf3_3.9.bb
index d969555..be75837 100644
--- a/meta-openembedded/meta-oe/recipes-benchmark/iperf3/iperf3_3.9.bb
+++ b/meta-openembedded/meta-oe/recipes-benchmark/iperf3/iperf3_3.9.bb
@@ -13,6 +13,7 @@
 
 SRC_URI = "git://github.com/esnet/iperf.git \
            file://0002-Remove-pg-from-profile_CFLAGS.patch \
+           file://0001-configure.ac-check-for-CPP-prog.patch \
            "
 
 SRCREV = "1f8fb13297f3e3e40169ebcd12e171167e394473"
diff --git a/meta-openembedded/meta-oe/recipes-benchmark/libhugetlbfs/files/0001-tests-makefile-Append-CPPFLAGS-rather-then-override.patch b/meta-openembedded/meta-oe/recipes-benchmark/libhugetlbfs/files/0001-tests-makefile-Append-CPPFLAGS-rather-then-override.patch
new file mode 100644
index 0000000..78a4cb0
--- /dev/null
+++ b/meta-openembedded/meta-oe/recipes-benchmark/libhugetlbfs/files/0001-tests-makefile-Append-CPPFLAGS-rather-then-override.patch
@@ -0,0 +1,31 @@
+From b6dba773491bbb7b4664dacdd87a12af860f1bd8 Mon Sep 17 00:00:00 2001
+From: Oleksiy Obitotskyy <oobitots@cisco.com>
+Date: Thu, 28 Jan 2021 05:43:33 -0800
+Subject: [PATCH] tests/makefile: Append CPPFLAGS rather then override
+
+CPPFLAGS overrided and we could miss some options needed.
+
+Upstream-Status: Submitted
+Signed-off-by: Oleksiy Obitotskyy <oobitots@cisco.com>
+---
+ tests/Makefile | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/tests/Makefile b/tests/Makefile
+index 0ca3716..d262932 100644
+--- a/tests/Makefile
++++ b/tests/Makefile
+@@ -33,8 +33,8 @@ HELPERS = get_hugetlbfs_path compare_kvers
+ HELPER_LIBS = libheapshrink.so
+ BADTOOLCHAIN = bad-toolchain.sh
+ 
+-CFLAGS = -O2 -Wall -g
+-CPPFLAGS = -I..
++CFLAGS += -O2 -Wall -g
++CPPFLAGS += -I..
+ STATIC_LIBHUGE = -Wl,--whole-archive -lhugetlbfs -Wl,--no-whole-archive
+ STATIC_LDLIBS = -Wl,--no-as-needed -lpthread
+ LDLIBS = $(STATIC_LDLIBS) -ldl -lhugetlbfs_privutils
+-- 
+2.26.2.Cisco
+
diff --git a/meta-openembedded/meta-oe/recipes-benchmark/libhugetlbfs/libhugetlbfs_git.bb b/meta-openembedded/meta-oe/recipes-benchmark/libhugetlbfs/libhugetlbfs_git.bb
index 2f07c93..fa63316 100644
--- a/meta-openembedded/meta-oe/recipes-benchmark/libhugetlbfs/libhugetlbfs_git.bb
+++ b/meta-openembedded/meta-oe/recipes-benchmark/libhugetlbfs/libhugetlbfs_git.bb
@@ -26,6 +26,7 @@
     file://0006-include-limits.h-for-PATH_MAX.patch \
     file://0001-huge_page_setup_helper-use-python3-interpreter.patch \
     file://0001-Revert-ld.hugetlbfs-fix-Ttext-segment-argument-on-AA.patch \
+    file://0001-tests-makefile-Append-CPPFLAGS-rather-then-override.patch \
 "
 
 UPSTREAM_CHECK_GITTAGREGEX = "(?P<pver>\d+(\.\d+)+)"