esp8266: Allow building a board to any dest directory.

Signed-off-by: Damien George <damien@micropython.org>

ports/esp8266/boards/esp8266_common.ld

@@ -144,7 +144,7 @@ SECTIONS
         *shared/timeutils/*.o*(.literal*, .text*)
         *drivers/bus/*.o(.literal* .text*)
 
-        build-*/main.o(.literal* .text*)
+        */main.o(.literal* .text*)
         *fatfs_port.o(.literal* .text*)
         *gccollect.o(.literal* .text*)
         *gchelper.o(.literal* .text*)
@@ -182,7 +182,7 @@ SECTIONS
         */frozen.o(.rodata.mp_frozen_content) /* frozen modules */
 
         /* for -mforce-l32 */
-        build-*/*.o(.rodata*)
+        */*.o(.rodata*)
 
         _irom0_text_end = ABSOLUTE(.);
     } >irom0_0_seg :irom0_0_phdr

tools/autobuild/build-esp8266-latest.sh

@@ -13,9 +13,7 @@ function do_build() {
     shift
     shift
     echo "building $descr $board"
-    #build_dir=/tmp/esp8266-build-$board
-    build_dir=build-$board # until esp8266.ld is fixed
-    rm -rf $build_dir # be sure we don't have anything leftover from a previous build
+    build_dir=/tmp/esp8266-build-$board
     $MICROPY_AUTOBUILD_MAKE $@ BOARD=$board BUILD=$build_dir || exit 1
     mv $build_dir/firmware-combined.bin $dest_dir/$descr$fw_tag.bin
     mv $build_dir/firmware.elf $dest_dir/$descr$fw_tag.elf
@@ -29,19 +27,16 @@ function do_build_ota() {
     shift
     shift
     echo "building $descr $board"
-    #build_dir=/tmp/esp8266-build-$board
-    build_dir=build-$board # until esp8266.ld is fixed
-    rm -rf $build_dir # be sure we don't have anything leftover from a previous build
+    build_dir=/tmp/esp8266-build-$board
     $MICROPY_AUTOBUILD_MAKE $@ BOARD=$board BUILD=$build_dir || exit 1
     cat $yaota8266/yaota8266.bin $build_dir/firmware-ota.bin > $dest_dir/$descr$fw_tag.bin
-    cwd=$(pwd)
     pushd $yaota8266/ota-client
-    $PYTHON3 ota_client.py sign $cwd/$build_dir/firmware-ota.bin 
+    $PYTHON3 ota_client.py sign $build_dir/firmware-ota.bin
     popd
     mv $build_dir/firmware-ota.bin.ota $dest_dir/$descr$fw_tag.ota
     mv $build_dir/firmware.elf $dest_dir/$descr$fw_tag.elf
     mv $build_dir/firmware.map $dest_dir/$descr$fw_tag.map
-    #rm -rf $build_dir
+    rm -rf $build_dir
 }
 
 # check/get parameters