Add OpenWrt mipsel_24kc build

.travis.yml

@@ -7,6 +7,7 @@ matrix:
     - name: "linux-x64"
       os: linux
       dist: bionic
+      env: EXTRA_FLAGS='target_cpu="x64"'
     - name: "linux-x86"
       os: linux
       dist: bionic
@@ -19,6 +20,10 @@ matrix:
       os: linux
       dist: bionic
       env: EXTRA_FLAGS='target_cpu="arm"'
+    - name: "openwrt-mipsel_24kc"
+      os: linux
+      dist: bionic
+      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" use_lld=false use_gold=false' OPENWRT_FLAGS='arch=mipsel_24kc release=19.07.1 gcc_ver=7.5.0 target=ramips subtarget=rt305x'
     - name: "osx"
       os: osx
       osx_image: xcode10.2
@@ -33,7 +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 )

src/build.sh

@@ -33,6 +33,7 @@ fi
 flags="$flags"'
   is_clang=true
   linux_use_bundled_binutils=false
+  use_sysroot=false
 
   fatal_linker_warnings=false
   treat_warnings_as_errors=false
@@ -62,6 +63,12 @@ if [ "$(uname)" = Linux ]; then
     ozone_auto_platforms=false
     ozone_platform="headless"
     ozone_platform_headless=true'
+  . ./get-sysroot.sh
+  sysroot=$(get_sysroot)
+  if [ "$sysroot" ]; then
+      flags="$flags
+        target_sysroot=\"//$sysroot\""
+  fi
 fi
 
 rm -rf "./$out"

src/build/linux/sysroot_scripts/sysroot-creator-sid-naive.sh

@@ -45,16 +45,23 @@ DEBIAN_PACKAGES_ARM64='
   libitm1
   libubsan0
 '
+DEBIAN_PACKAGES_MIPS64EL='
+'
 
 # Disables libdbus workarounds
 ln -sf /bin/true strip
 ln -sf /bin/true arm-linux-gnueabihf-strip
+ln -sf /bin/true mipsel-linux-gnu-strip
+ln -sf /bin/true mips64el-linux-gnuabi64-strip
 export PATH="$PWD:$PATH"
 cp() {
   [ "${1##*/}" = libdbus-1-3-symbols ] && return
   /bin/cp "$@"
 }
+tar() {
+  echo tar "$@"
+}
 
-trap "cd $PWD; rm strip arm-linux-gnueabihf-strip" EXIT
+trap "cd $PWD; rm strip *-strip" EXIT
 
 . "${SCRIPT_DIR}/sysroot-creator.sh"

src/get-clang.sh

@@ -7,31 +7,23 @@ case "$ARCH" in
   MSYS*) ARCH=Windows;;
 esac
 
-eval "$EXTRA_FLAGS"
-
 build_sysroot() {
-  local lower="$(echo "$1" | tr '[:upper:]' '[:lower:]')"
   ./build/linux/sysroot_scripts/sysroot-creator-sid-naive.sh "BuildSysroot$1"
-  rm -rf "./build/linux/debian_sid_$lower-sysroot"
-  mkdir "./build/linux/debian_sid_$lower-sysroot"
-  tar xf "./out/sysroot-build/sid/debian_sid_${lower}_sysroot.tar.xz" -C "./build/linux/debian_sid_$lower-sysroot"
 }
 
 if [ "$ARCH" = Linux ]; then
-  build_sysroot Amd64
+  if [ "$OPENWRT_FLAGS" ]; then
+    ./get-openwrt.sh
+  else
+    eval "$EXTRA_FLAGS"
     case "$target_cpu" in
-    arm64)
-      build_sysroot ARM64
-    ;;
-    arm)
-      build_sysroot I386
-      build_sysroot ARM
-    ;;
-    x86)
-      build_sysroot I386
-    ;;
+      x64) build_sysroot Amd64;;
+      x86) build_sysroot I386;;
+      arm64) build_sysroot ARM64;;
+      arm) build_sysroot ARM;;
     esac
   fi
+fi
 
 # Clang
 python2=$(which python2 2>/dev/null || which python 2>/dev/null)

src/get-openwrt.sh

@@ -0,0 +1,47 @@
+#!/bin/sh
+
+set -ex
+
+eval "$OPENWRT_FLAGS"
+
+sysroot=$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-${gcc_ver}_musl.Linux-x86_64
+SDK_URL=https://downloads.openwrt.org/releases/$release/targets/$target/$subtarget/$SDK_PATH.tar.xz
+rm -rf $SDK_PATH
+curl $SDK_URL | tar xJf -
+cd $SDK_PATH
+./scripts/feeds update base packages
+./scripts/feeds install libnss
+make defconfig
+for flag in ALL_NONSHARED ALL_KMODS ALL SIGNED_PACKAGES; do
+  sed -i "s/CONFIG_$flag=y/# CONFIG_$flag is not set/" .config
+done
+make oldconfig
+make
+full_root=staging_dir/toolchain-${arch}_gcc-${gcc_ver}_musl
+cp -r staging_dir/target-${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
+*.ld.bin
+' >include.txt
+tar cf - -C $full_root --hard-dereference . | tar xf - -C $sysroot --wildcards --wildcards-match-slash -T include.txt
+rm include.txt
+cd $sysroot/*-openwrt-linux-musl/bin
+mv .ld.bin ld

src/get-sysroot.sh

@@ -0,0 +1,21 @@
+get_sysroot() {
+  if [ "$OPENWRT_FLAGS" ]; then
+     eval "$OPENWRT_FLAGS"
+     echo "out/sysroot-build/openwrt/$release/$arch"
+     return
+  fi
+  eval "$EXTRA_FLAGS"
+  if [ ! "$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
+}

tests/basic.sh

@@ -2,12 +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 $naive";;
+    arm64) naive="qemu-aarch64 -L src/$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