Meta: Make x86-64 target the default

This is a preparation to check if our users find noticeable bugs in the
x86-64 target, before we can decide if we want to remove the i686 target
for good.

Meta/CMake/Superbuild/CMakeLists.txt

@@ -32,7 +32,7 @@ get_filename_component(
     SERENITY_SOURCE_DIR "${PROJECT_SOURCE_DIR}/../../.."
     ABSOLUTE CACHE
 )
-set(SERENITY_ARCH "i686" CACHE STRING "Target architecture for SerenityOS.")
+set(SERENITY_ARCH "x86_64" CACHE STRING "Target architecture for SerenityOS.")
 set(SERENITY_TOOLCHAIN "GNU" CACHE STRING "Compiler toolchain to use for Serenity (GNU or Clang)")
 
 # FIXME: It is preferred to keep all the sub-build artifacts below the binary directory for the superbuild

Meta/analyze-qemu-coverage.sh

@@ -5,7 +5,7 @@ set -eo pipefail
 SCRIPT_DIR="$(dirname "${0}")"
 
 if [ -z "$SERENITY_ARCH" ]; then
-    SERENITY_ARCH="i686"
+    SERENITY_ARCH="x86_64"
 fi
 
 toolchain_suffix=

Meta/build-root-filesystem.sh

@@ -41,7 +41,7 @@ else
     chown -R 0:0 mnt/
 fi
 
-SERENITY_ARCH="${SERENITY_ARCH:-i686}"
+SERENITY_ARCH="${SERENITY_ARCH:-x86_64}"
 LLVM_VERSION="${LLVM_VERSION:-14.0.1}"
 
 if [ "$SERENITY_TOOLCHAIN" = "Clang" ]; then

Meta/check-symbols.sh

@@ -9,7 +9,7 @@ cd "$script_path/.." || exit 1
 # To eliminate the need for these symbols, avoid doing non-trivial construction of local statics in LibC.
 
 FORBIDDEN_SYMBOLS="__cxa_guard_acquire __cxa_guard_release"
-TARGET="${SERENITY_ARCH:-"i686"}"
+TARGET="${SERENITY_ARCH:-"x86_64"}"
 LIBC_PATH="Build/${TARGET}/Userland/Libraries/LibC/libc.a"
 for forbidden_symbol in $FORBIDDEN_SYMBOLS; do
     # check if there's an undefined reference to the symbol & it is not defined anywhere else in the library

Meta/debug-kernel.sh

@@ -3,7 +3,7 @@
 SCRIPT_DIR="$(dirname "${0}")"
 
 if [ -z "$SERENITY_ARCH" ]; then
-    SERENITY_ARCH="i686"
+    SERENITY_ARCH="x86_64"
 fi
 
 # Set this environment variable to override the default debugger.
@@ -50,10 +50,10 @@ fi
 
 
 exec $SERENITY_KERNEL_DEBUGGER \
-    -ex "file $SCRIPT_DIR/../Build/${SERENITY_ARCH:-i686}$toolchain_suffix/Kernel/Prekernel/$prekernel_image" \
+    -ex "file $SCRIPT_DIR/../Build/${SERENITY_ARCH:-x86_64}$toolchain_suffix/Kernel/Prekernel/$prekernel_image" \
     -ex "set confirm off" \
-    -ex "directory $SCRIPT_DIR/../Build/${SERENITY_ARCH:-i686}$toolchain_suffix/" \
-    -ex "add-symbol-file $SCRIPT_DIR/../Build/${SERENITY_ARCH:-i686}$toolchain_suffix/Kernel/Kernel -o $kernel_base" \
+    -ex "directory $SCRIPT_DIR/../Build/${SERENITY_ARCH:-x86_64}$toolchain_suffix/" \
+    -ex "add-symbol-file $SCRIPT_DIR/../Build/${SERENITY_ARCH:-x86_64}$toolchain_suffix/Kernel/Kernel -o $kernel_base" \
     -ex "set confirm on" \
     -ex "set arch $gdb_arch" \
     -ex "set print frame-arguments none" \

Meta/export-argsparser-manpages.sh

@@ -29,7 +29,7 @@ sudo true
 
 if [ -z "$BUILD_DIR" ]; then
     if [ -z "$SERENITY_ARCH" ]; then
-        export SERENITY_ARCH="i686"
+        export SERENITY_ARCH="x86_64"
         echo "SERENITY_ARCH not given. Assuming ${SERENITY_ARCH}."
     fi
     BUILD_DIR=Build/"$SERENITY_ARCH"

Meta/serenity.sh

@@ -91,7 +91,7 @@ fi
 if [ -n "$1" ]; then
     TARGET="$1"; shift
 else
-    TARGET="${SERENITY_ARCH:-"i686"}"
+    TARGET="${SERENITY_ARCH:-"x86_64"}"
 fi
 
 CMAKE_ARGS=()

Ports/.hosted_defs.sh

@@ -2,7 +2,7 @@
 
 SCRIPT="$(dirname "${0}")"
 
-export SERENITY_ARCH="${SERENITY_ARCH:-i686}"
+export SERENITY_ARCH="${SERENITY_ARCH:-x86_64}"
 export SERENITY_TOOLCHAIN="${SERENITY_TOOLCHAIN:-GNU}"
 
 if [ -z "${HOST_CC:=}" ]; then

Toolchain/BuildIt.sh

@@ -9,7 +9,7 @@ DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 
 echo "$DIR"
 
-ARCH=${ARCH:-"i686"}
+ARCH=${ARCH:-"x86_64"}
 TARGET="$ARCH-pc-serenity"
 PREFIX="$DIR/Local/$ARCH"
 BUILD="$DIR/../Build/$ARCH"