community/webkit2gtk: enable on x86

Enable x86 and work around out of meomory error by disable
_FORTIFY_SOURCE.

community/webkit2gtk/APKBUILD

@@ -7,7 +7,7 @@ pkgver=2.24.3
 pkgrel=0
 pkgdesc="Portable web rendering engine WebKit for GTK+"
 url="https://webkitgtk.org/"
-arch="all !x86" # x86 fails with: cc1plus: out of memory allocating 65536 bytes after a total of 3131101184 bytes
+arch="all"
 license="LGPL-2.0-or-later AND BSD-2-Clause"
 makedepends="
 	bison
@@ -100,6 +100,9 @@ builddir="$srcdir/webkitgtk-$pkgver"
 build() {
 	local _archopt=
 	case "$CARCH" in
+		# disable _FORTIFY_SOURCE to work around:
+		# cc1plus: out of memory allocating 65536 bytes after a total of 3131101184 bytes
+		x86) CXXFLAGS="$CXXFLAGS -U_FORTIFY_SOURCE";;
 		armhf|armv7|ppc64le|s390x) _archopt="-DENABLE_JIT=OFF";;
 	esac