Bug 1695835 - Build geckodriver using liblowercase. r=firefox-build-system-reviewers,andi,dmajor

Bug 1694775 had to get a fixup to install the rename utility, that is
not in the base Debian image for buster, while it was there for jessie.
However, we only use rename for a hack when cross-building geckodriver
for Windows, and we don't need to.

Differential Revision: https://phabricator.services.mozilla.com/D106875

taskcluster/ci/toolchain/geckodriver.yml

@@ -84,6 +84,7 @@ win32-geckodriver:
     fetches:
         toolchain:
             - linux64-clang
+            - linux64-liblowercase
             - linux64-rust-windows
 
 win64-geckodriver:
@@ -104,4 +105,5 @@ win64-geckodriver:
     fetches:
         toolchain:
             - linux64-clang
+            - linux64-liblowercase
             - linux64-rust-windows

taskcluster/docker/toolchain-build/Dockerfile

@@ -41,7 +41,6 @@ RUN apt-get update && \
       python3-distutils-extra \
       python3-requests \
       python3-pytoml \
-      rename \
       subversion \
       tar \
       unzip \

taskcluster/scripts/misc/build-geckodriver.sh

@@ -9,10 +9,6 @@ export TARGET="$1"
 
 cd $GECKO_PATH
 
-if [ -n "$TOOLTOOL_MANIFEST" ]; then
-  . taskcluster/scripts/misc/tooltool-download.sh
-fi
-
 EXE=
 COMPRESS_EXT=gz
 
@@ -27,13 +23,10 @@ case "$TARGET" in
     . $GECKO_PATH/taskcluster/scripts/misc/vs-setup.sh
     export CARGO_TARGET_X86_64_PC_WINDOWS_MSVC_LINKER=$MOZ_FETCHES_DIR/clang/bin/lld-link
   fi
-  ( IFS=\;
-    for d in $LIB; do
-      (cd "$d"; rename y/A-Z/a-z/ *)
-    done
-  )
   # Bug 1584530: don't require the Microsoft MSVC runtime to be installed.
   export RUSTFLAGS="-Ctarget-feature=+crt-static"
+  export LD_PRELOAD=$MOZ_FETCHES_DIR/liblowercase/liblowercase.so
+  export LOWERCASE_DIRS=$MOZ_FETCHES_DIR/vs2017_15.8.4
   ;;
 # OSX cross builds are a bit harder
 x86_64-apple-darwin)
@@ -43,6 +36,10 @@ x86_64-apple-darwin)
   ;;
 esac
 
+if [ -n "$TOOLTOOL_MANIFEST" ]; then
+  . taskcluster/scripts/misc/tooltool-download.sh
+fi
+
 export PATH="$MOZ_FETCHES_DIR/rustc/bin:$PATH"
 
 cd $GECKO_PATH/testing/geckodriver