diff --git a/.github/workflows/scripts/build_linux_386_ssl3.sh b/.github/workflows/scripts/build_linux_386_ssl3.sh
index 4564fb0..1e128f7 100755
--- a/.github/workflows/scripts/build_linux_386_ssl3.sh
+++ b/.github/workflows/scripts/build_linux_386_ssl3.sh
@@ -14,6 +14,9 @@ HOST_CMAKE_C_FLAGS="-fuse-ld=lld"
 HOST_CMAKE_CXX_FLAGS="${HOST_CMAKE_C_FLAGS} -stdlib=libc++"
 HOST_CMAKE_EXE_LINKER_FLAGS="-lc++ -lc++abi -fuse-ld=lld -rtlib=compiler-rt -unwindlib=libunwind"
 
+# Use c++11
+export CMAKE_CXX_FLAGS="${CMAKE_CXX_FLAGS} -std=c++14"
+
 # ccache
 CCACHE=$(which sccache || true)
 if [[ -x "$CCACHE" ]]; then
diff --git a/.github/workflows/scripts/build_linux_amd64_ssl1.sh b/.github/workflows/scripts/build_linux_amd64_ssl1.sh
index 1bca311..6d1ef94 100755
--- a/.github/workflows/scripts/build_linux_amd64_ssl1.sh
+++ b/.github/workflows/scripts/build_linux_amd64_ssl1.sh
@@ -13,6 +13,9 @@ HOST_CMAKE_C_FLAGS="-fuse-ld=lld"
 HOST_CMAKE_CXX_FLAGS="${HOST_CMAKE_C_FLAGS} -stdlib=libc++"
 HOST_CMAKE_EXE_LINKER_FLAGS="-lc++ -lc++abi -fuse-ld=lld -rtlib=compiler-rt -unwindlib=libunwind"
 
+# Use c++11
+export CMAKE_CXX_FLAGS="${CMAKE_CXX_FLAGS} -std=c++14"
+
 # ccache
 CCACHE=$(which sccache || true)
 if [[ -x "$CCACHE" ]]; then
diff --git a/.github/workflows/scripts/build_linux_amd64_ssl3.sh b/.github/workflows/scripts/build_linux_amd64_ssl3.sh
index f5c1a20..d126b83 100755
--- a/.github/workflows/scripts/build_linux_amd64_ssl3.sh
+++ b/.github/workflows/scripts/build_linux_amd64_ssl3.sh
@@ -13,6 +13,9 @@ HOST_CMAKE_C_FLAGS="-fuse-ld=lld"
 HOST_CMAKE_CXX_FLAGS="${HOST_CMAKE_C_FLAGS} -stdlib=libc++"
 HOST_CMAKE_EXE_LINKER_FLAGS="-lc++ -lc++abi -fuse-ld=lld -rtlib=compiler-rt -unwindlib=libunwind"
 
+# Use c++11
+export CMAKE_CXX_FLAGS="${CMAKE_CXX_FLAGS} -std=c++14"
+
 # ccache
 CCACHE=$(which sccache || true)
 if [[ -x "$CCACHE" ]]; then
diff --git a/.github/workflows/scripts/build_linux_arm64_ssl1.sh b/.github/workflows/scripts/build_linux_arm64_ssl1.sh
index 436d35a..faeec9d 100755
--- a/.github/workflows/scripts/build_linux_arm64_ssl1.sh
+++ b/.github/workflows/scripts/build_linux_arm64_ssl1.sh
@@ -14,6 +14,9 @@ HOST_CMAKE_C_FLAGS="-fuse-ld=lld"
 HOST_CMAKE_CXX_FLAGS="${HOST_CMAKE_C_FLAGS} -stdlib=libc++"
 HOST_CMAKE_EXE_LINKER_FLAGS="-lc++ -lc++abi -fuse-ld=lld -rtlib=compiler-rt -unwindlib=libunwind"
 
+# Use c++11
+export CMAKE_CXX_FLAGS="${CMAKE_CXX_FLAGS} -std=c++14"
+
 # ccache
 CCACHE=$(which sccache || true)
 if [[ -x "$CCACHE" ]]; then
diff --git a/.github/workflows/scripts/build_linux_arm64_ssl3.sh b/.github/workflows/scripts/build_linux_arm64_ssl3.sh
index 06f4d96..56ebf28 100755
--- a/.github/workflows/scripts/build_linux_arm64_ssl3.sh
+++ b/.github/workflows/scripts/build_linux_arm64_ssl3.sh
@@ -14,6 +14,9 @@ HOST_CMAKE_C_FLAGS="-fuse-ld=lld"
 HOST_CMAKE_CXX_FLAGS="${HOST_CMAKE_C_FLAGS} -stdlib=libc++"
 HOST_CMAKE_EXE_LINKER_FLAGS="-lc++ -lc++abi -fuse-ld=lld -rtlib=compiler-rt -unwindlib=libunwind"
 
+# Use c++11
+export CMAKE_CXX_FLAGS="${CMAKE_CXX_FLAGS} -std=c++14"
+
 # ccache
 CCACHE=$(which sccache || true)
 if [[ -x "$CCACHE" ]]; then
diff --git a/.github/workflows/scripts/build_linux_armhf_ssl3.sh b/.github/workflows/scripts/build_linux_armhf_ssl3.sh
index fd1b639..b84d651 100755
--- a/.github/workflows/scripts/build_linux_armhf_ssl3.sh
+++ b/.github/workflows/scripts/build_linux_armhf_ssl3.sh
@@ -14,6 +14,9 @@ HOST_CMAKE_C_FLAGS="-fuse-ld=lld"
 HOST_CMAKE_CXX_FLAGS="${HOST_CMAKE_C_FLAGS} -stdlib=libc++"
 HOST_CMAKE_EXE_LINKER_FLAGS="-lc++ -lc++abi -fuse-ld=lld -rtlib=compiler-rt -unwindlib=libunwind"
 
+# Use c++11
+export CMAKE_CXX_FLAGS="${CMAKE_CXX_FLAGS} -std=c++14"
+
 # ccache
 CCACHE=$(which sccache || true)
 if [[ -x "$CCACHE" ]]; then
diff --git a/.github/workflows/scripts/build_linux_ppc64le_ssl3.sh b/.github/workflows/scripts/build_linux_ppc64le_ssl3.sh
index 9ad7975..a9970af 100755
--- a/.github/workflows/scripts/build_linux_ppc64le_ssl3.sh
+++ b/.github/workflows/scripts/build_linux_ppc64le_ssl3.sh
@@ -14,6 +14,9 @@ HOST_CMAKE_C_FLAGS="-fuse-ld=lld"
 HOST_CMAKE_CXX_FLAGS="${HOST_CMAKE_C_FLAGS} -stdlib=libc++"
 HOST_CMAKE_EXE_LINKER_FLAGS="-lc++ -lc++abi -fuse-ld=lld -rtlib=compiler-rt -unwindlib=libunwind"
 
+# Use c++11
+export CMAKE_CXX_FLAGS="${CMAKE_CXX_FLAGS} -std=c++14"
+
 # ccache
 CCACHE=$(which sccache || true)
 if [[ -x "$CCACHE" ]]; then
diff --git a/.github/workflows/scripts/build_linux_riscv64_ssl3.sh b/.github/workflows/scripts/build_linux_riscv64_ssl3.sh
index 6ed352d..513923f 100755
--- a/.github/workflows/scripts/build_linux_riscv64_ssl3.sh
+++ b/.github/workflows/scripts/build_linux_riscv64_ssl3.sh
@@ -14,6 +14,9 @@ HOST_CMAKE_C_FLAGS="-fuse-ld=lld"
 HOST_CMAKE_CXX_FLAGS="${HOST_CMAKE_C_FLAGS} -stdlib=libc++"
 HOST_CMAKE_EXE_LINKER_FLAGS="-lc++ -lc++abi -fuse-ld=lld -rtlib=compiler-rt -unwindlib=libunwind"
 
+# Use c++11
+export CMAKE_CXX_FLAGS="${CMAKE_CXX_FLAGS} -std=c++14"
+
 # ccache
 CCACHE=$(which sccache || true)
 if [[ -x "$CCACHE" ]]; then