diff --git a/.travis.yml b/.travis.yml
index 3cbbe3824d..6406c78c87 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -20,14 +20,10 @@ matrix:
       os: linux
       dist: bionic
       env: EXTRA_FLAGS='target_cpu="arm"'
-    - name: "linux-mipsel"
+    - name: "openwrt-mipsel_24kc"
       os: linux
       dist: bionic
-      env: EXTRA_FLAGS='target_cpu="mipsel" mips_arch_variant="r2"'
-    - name: "openwrt-mips"
-      os: linux
-      dist: bionic
-      env: EXTRA_FLAGS='target_cpu="mips" mips_arch_variant="r2" mips_float_abi="soft" use_allocator="none" use_allocator_shim=false is_openwrt=true target_sysroot="//out/sysroot-build/openwrt/mips" ldso_path="/lib/ld-musl-mips-sf.so.1"'
+      env: EXTRA_FLAGS='target_cpu="mipsel" mips_arch_variant="r2" mips_float_abi="soft" mips_tune="24kc" use_allocator="none" use_allocator_shim=false is_openwrt=true ldso_path="/lib/ld-musl-mipsel-sf.so.1"' OPENWRT_ARCH=mipsel_24kc OPENWRT_RELEASE=19.07.0-rc1 OPENWRT_GCC=gcc-7.4.0
     - name: "osx"
       os: osx
       osx_image: xcode10.2
@@ -42,7 +38,10 @@ addons:
     packages:
       - ninja
       - ccache
-cache: ccache
+cache:
+  directories:
+    - $HOME/.ccache
+    - src/out/sysroot-build/openwrt
 script:
   - ./tools/import-upstream.sh
   - ( cd src; ./get-clang.sh )
diff --git a/src/build.sh b/src/build.sh
index a4ebaac262..8840019179 100755
--- a/src/build.sh
+++ b/src/build.sh
@@ -63,20 +63,11 @@ if [ "$(uname)" = Linux ]; then
     ozone_auto_platforms=false
     ozone_platform="headless"
     ozone_platform_headless=true'
-  if [ ! "$target_sysroot" ]; then
-    eval "$EXTRA_FLAGS"
-    sysroot_type=''
-    case "$target_cpu" in
-      x64) sysroot_type=amd64;;
-      x86) sysroot_type=i386;;
-      arm64) sysroot_type=arm64;;
-      arm) sysroot_type=arm;;
-      mipsel) sysroot_type=mips;;
-    esac
-    if [ "$sysroot_type" ]; then
-      flags="$flags"'
-        target_sysroot="//out/sysroot-build/sid/sid_'"$sysroot_type"'_staging"'
-    fi
+  . ./get-sysroot.sh
+  sysroot=$(get_sysroot)
+  if [ "$sysroot" ]; then
+      flags="$flags
+        target_sysroot=\"//$sysroot\""
   fi
 fi
 
diff --git a/src/get-clang.sh b/src/get-clang.sh
index d5090f98a7..b6243bfd5d 100755
--- a/src/get-clang.sh
+++ b/src/get-clang.sh
@@ -7,21 +7,22 @@ case "$ARCH" in
   MSYS*) ARCH=Windows;;
 esac
 
-eval "$EXTRA_FLAGS"
-
 build_sysroot() {
   ./build/linux/sysroot_scripts/sysroot-creator-sid-naive.sh "BuildSysroot$1"
 }
 
 if [ "$ARCH" = Linux ]; then
-  case "$target_cpu" in
-    x64) build_sysroot Amd64;;
-    x86) build_sysroot I386;;
-    arm64) build_sysroot ARM64;;
-    arm) build_sysroot ARM;;
-    mips64el) build_sysroot Mips64el;;
-    mipsel) build_sysroot Mips;;
-  esac
+  if [ "$OPENWRT_ARCH" ]; then
+    ./get-openwrt.sh
+  else
+    eval "$EXTRA_FLAGS"
+    case "$target_cpu" in
+      x64) build_sysroot Amd64;;
+      x86) build_sysroot I386;;
+      arm64) build_sysroot ARM64;;
+      arm) build_sysroot ARM;;
+    esac
+  fi
 fi
 
 # Clang
diff --git a/src/get-openwrt.sh b/src/get-openwrt.sh
new file mode 100755
index 0000000000..41a81d814b
--- /dev/null
+++ b/src/get-openwrt.sh
@@ -0,0 +1,48 @@
+#!/bin/sh
+
+set -ex
+
+arch=$OPENWRT_ARCH
+release=$OPENWRT_RELEASE
+gcc_ver=$OPENWRT_GCC
+
+case "$arch" in
+  mipsel_24kc) target=ramips subtarget=rt305x;;
+  *) exit 1;;
+esac
+
+sysroot=$PWD/out/sysroot-build/openwrt/$release/$arch
+if [ -d $sysroot/lib ]; then
+  exit 0
+fi
+mkdir -p $sysroot
+
+SDK_PATH=openwrt-sdk-$release-$target-${subtarget}_${gcc_ver}_musl.Linux-x86_64
+SDK_URL=https://downloads.openwrt.org/releases/$release/targets/$target/$subtarget/$SDK_PATH.tar.xz
+rm -rf $SDK_PATH
+curl $SDK_URL | tar xJf -
+cd $SDK_PATH
+./scripts/feeds update base packages
+./scripts/feeds install libnss
+cp ../$target-$subtarget.config .config
+yes | make oldconfig
+make
+full_root=staging_dir/toolchain-${arch}_${gcc_ver}_musl
+cp -r staging_dir/target-${arch}_musl/usr $full_root
+echo '
+./include
+./lib/*.o
+./lib/gcc/*/libgcc.a
+./lib/libatomic.so*
+./lib/libc.so
+./lib/libdl.a
+./lib/ld-*
+./lib/libgcc_s.*
+./lib/libm.a
+./lib/libpthread.a
+./lib/libresolv.a
+./lib/librt.a
+./usr
+' >include.txt
+tar cf - -C $full_root . | tar xf - -C $sysroot --wildcards --wildcards-match-slash -T include.txt
+rm include.txt
diff --git a/src/get-sysroot.sh b/src/get-sysroot.sh
new file mode 100644
index 0000000000..fa3b3d1b5e
--- /dev/null
+++ b/src/get-sysroot.sh
@@ -0,0 +1,18 @@
+get_sysroot() {
+  eval "$EXTRA_FLAGS"
+  if [ "$OPENWRT_ARCH" -a "$OPENWRT_RELEASE" ]; then
+     echo "out/sysroot-build/openwrt/$OPENWRT_RELEASE/$OPENWRT_ARCH"
+  elif [ ! "$target_sysroot" ]; then
+    local sysroot_type
+    case "$target_cpu" in
+      x64) sysroot_type=amd64;;
+      x86) sysroot_type=i386;;
+      arm64) sysroot_type=arm64;;
+      arm) sysroot_type=arm;;
+      mipsel) sysroot_type=mips;;
+    esac
+    if [ "$sysroot_type" ]; then
+      echo "out/sysroot-build/sid/sid_${sysroot_type}_staging"
+    fi
+  fi
+}
diff --git a/tests/basic.sh b/tests/basic.sh
index 26105f6cbe..a7306c6f0a 100755
--- a/tests/basic.sh
+++ b/tests/basic.sh
@@ -2,14 +2,15 @@
 
 [ "$1" ] || exit 1
 naive="$1"
-eval "$EXTRA_FLAGS"
 if [ "$(uname)" = Linux ]; then
+  . src/get-sysroot.sh
+  sysroot=$(get_sysroot)
+  eval "$EXTRA_FLAGS"
   case "$target_cpu" in
-    arm64) naive="qemu-aarch64 -L src/build/linux/debian_sid_arm64-sysroot $naive";;
-    arm) naive="qemu-arm -L src/build/linux/debian_sid_arm-sysroot $naive";;
-    x86) naive="qemu-i386 -L src/build/linux/debian_sid_i386-sysroot $naive";;
-    mipsel) naive="qemu-mipsel -L src/build/linux/debian_sid_mips-sysroot $naive";;
-    mips64el) naive="qemu-mips64el -L src/build/linux/debian_sid_mips64el-sysroot $naive";;
+    arm64) naive="qemu-aarch64 -L src/$sysroot $naive";;
+    arm) naive="qemu-arm -L src/$sysroot $naive";;
+    x86) naive="qemu-i386 -L src/$sysroot $naive";;
+    mipsel) naive="qemu-mipsel -L src/$sysroot $naive";;
   esac
 fi