diff -uNrBbp palemoon-29.4.6/palemoon/palemoon/configure.in palemoon-29.4.6-new/palemoon/palemoon/configure.in
--- palemoon-29.4.6/palemoon/palemoon/configure.in	2022-05-07 15:30:02.000000000 +0000
+++ palemoon-29.4.6-new/palemoon/palemoon/configure.in	2022-05-07 19:00:58.566126012 +0000
@@ -34,3 +34,6 @@ if test -n "$MOZ_PERSONAS"; then
 fi
 
 AC_SUBST(MOZ_PERSONAS)
+
+CXXFLAGS="$CXXFLAGS -D_GLIBCXX_USE_CXX11_ABI=0"
+HOST_CXXFLAGS="$HOST_CXXFLAGS -D_GLIBCXX_USE_CXX11_ABI=0"