Make OpenWRT build target configurable

.travis.yml

@@ -23,7 +23,7 @@ matrix:
     - 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"' OPENWRT_ARCH=mipsel_24kc OPENWRT_RELEASE=19.07.0-rc1 OPENWRT_GCC=gcc-7.4.0
+      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_FLAGS='arch=mipsel_24kc release=19.07.0-rc1 gcc_ver=7.4.0 target=ramips subtarget=rt305x'
     - name: "osx"
       os: osx
       osx_image: xcode10.2

src/get-clang.sh

@@ -12,7 +12,7 @@ build_sysroot() {
 }
 
 if [ "$ARCH" = Linux ]; then
-  if [ "$OPENWRT_ARCH" ]; then
+  if [ "$OPENWRT_FLAGS" ]; then
     ./get-openwrt.sh
   else
     eval "$EXTRA_FLAGS"

src/get-openwrt.sh

@@ -2,14 +2,7 @@
 
 set -ex
 
-arch=$OPENWRT_ARCH
-release=$OPENWRT_RELEASE
-gcc_ver=$OPENWRT_GCC
-
-case "$arch" in
-  mipsel_24kc) target=ramips subtarget=rt305x;;
-  *) exit 1;;
-esac
+eval "$OPENWRT_FLAGS"
 
 sysroot=$PWD/out/sysroot-build/openwrt/$release/$arch
 if [ -d $sysroot/lib ]; then
@@ -17,17 +10,20 @@ if [ -d $sysroot/lib ]; then
 fi
 mkdir -p $sysroot
 
-SDK_PATH=openwrt-sdk-$release-$target-${subtarget}_${gcc_ver}_musl.Linux-x86_64
+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 $SDK_PATH
 ./scripts/feeds update base packages
 ./scripts/feeds install libnss
-cp ../$target-$subtarget.config .config
-yes | make oldconfig
+make defconfig
+for flag in ALL_NONSHARED ALL_KMODS ALL SIGNED_PACKAGES; do
+  sed -i "s/CONFIG_$flag=y/# CONFIG_$flag is not set/" .config
+done
+make oldconfig
 make
-full_root=staging_dir/toolchain-${arch}_${gcc_ver}_musl
+full_root=staging_dir/toolchain-${arch}_gcc-${gcc_ver}_musl
 cp -r staging_dir/target-${arch}_musl/usr $full_root
 echo '
 ./include

src/get-sysroot.sh

@@ -1,8 +1,11 @@
 get_sysroot() {
+  if [ "$OPENWRT_FLAGS" ]; then
+     eval "$OPENWRT_FLAGS"
+     echo "out/sysroot-build/openwrt/$release/$arch"
+     return
+  fi
   eval "$EXTRA_FLAGS"
-  if [ "$OPENWRT_ARCH" -a "$OPENWRT_RELEASE" ]; then
-     echo "out/sysroot-build/openwrt/$OPENWRT_RELEASE/$OPENWRT_ARCH"
-  elif [ ! "$target_sysroot" ]; then
+  if [ ! "$target_sysroot" ]; then
     local sysroot_type
     case "$target_cpu" in
       x64) sysroot_type=amd64;;