Backed out 4 changesets (bug 1417646) for Webdriver missing geckodriver binary, at least on Linux x64 asan

Backed out changeset 1c7e3f8af2e3 (bug 1417646)
Backed out changeset 42ea09d91d7e (bug 1417646)
Backed out changeset 1a3c37471045 (bug 1417646)
Backed out changeset 7179a078b7b4 (bug 1417646)

build/macosx/cross-mozconfig.common

@@ -10,9 +10,6 @@ if [ "x$IS_NIGHTLY" = "xyes" ]; then
 fi
 . "$topsrcdir/build/mozconfig.common"
 
-# Rust requires dsymutil into PATH
-mk_add_options "export PATH=$topsrcdir/llvm-dsymutil/bin:$PATH"
-
 # ld needs libLTO.so from llvm
 mk_add_options "export LD_LIBRARY_PATH=$topsrcdir/clang/lib"
 

build/unix/mozconfig.linux32

@@ -6,3 +6,10 @@ CFLAGS="$CFLAGS -march=pentium-m -msse -msse2 -mfpmath=sse"
 CXXFLAGS="$CXXFLAGS -march=pentium-m -msse -msse2 -mfpmath=sse"
 
 ac_add_options --target=i686-pc-linux
+
+# The linux32 builds are effectively cross-compilations, and geckodriver
+# is not enabled by default on cross-compilations, because in most cases,
+# the target is not something we can run binaries of, and geckodriver
+# is a target binary instead of a host binary. But for linux32, we actually
+# can run the target binaries, so we can manually enable geckodriver.
+ac_add_options --enable-geckodriver

taskcluster/scripts/misc/build-llvm-dsymutil.sh

@@ -62,11 +62,7 @@ export LD_LIBRARY_PATH=$HOME_DIR/src/gcc/lib64
 
 ninja llvm-dsymutil llvm-symbolizer
 
-# Create a symbolic link since rust doesn't allow to specify a custom dsymutil.
-# This should be dropped once https://github.com/rust-lang/rust/issues/52728 fixed.
-ln -s llvm-dsymutil bin/dsymutil
-tar --xform='s,^,llvm-dsymutil/,S' -Jcf llvm-dsymutil.tar.xz \
-  bin/llvm-dsymutil bin/llvm-symbolizer bin/dsymutil
+tar --xform='s,^,llvm-dsymutil/,' -Jcf llvm-dsymutil.tar.xz bin/llvm-dsymutil bin/llvm-symbolizer
 
 mkdir -p $UPLOAD_DIR
 cp llvm-dsymutil.tar.xz $UPLOAD_DIR

toolkit/moz.configure

@@ -907,9 +907,9 @@ option('--enable-geckodriver', help='Enable WebDriver implementation')
 @depends('--enable-geckodriver',
          'MOZ_AUTOMATION',
          compile_environment,
-         target,
+         cross_compiling,
          hazard_analysis)
-def geckodriver(enable, automation, compile_env, target, hazard):
+def geckodriver(enable, automation, compile_env, cross_compile, hazard):
     """
     geckodriver is implied on supported platforms when MOZ_AUTOMATION
     is set, but we also provide the --enable-geckodriver option for
@@ -927,8 +927,7 @@ def geckodriver(enable, automation, compile_env, target, hazard):
         return True
 
     if enable.origin == 'default':
-        # Bug 1441656 for Android.
-        broken_platforms = hazard or target.os == 'Android'
+        broken_platforms = cross_compile or hazard
 
         if automation and compile_env and not broken_platforms:
             return True

toolkit/toolkit.mozbuild

@@ -165,7 +165,7 @@ if CONFIG['ENABLE_MARIONETTE']:
         '/testing/marionette',
     ]
 
-if CONFIG['ENABLE_GECKODRIVER'] and not (CONFIG['MOZ_ASAN'] or CONFIG['MOZ_TSAN']):
+if CONFIG['ENABLE_GECKODRIVER']:
     DIRS += ['/testing/geckodriver']
 
 DIRS += [