Index: www/firefox/files/patch-build_autoconf_compiler-opts.m4
===================================================================
--- www/firefox/files/patch-build_autoconf_compiler-opts.m4	(nonexistent)
+++ www/firefox/files/patch-build_autoconf_compiler-opts.m4	(working copy)
@@ -0,0 +1,11 @@
+--- build/autoconf/compiler-opts.m4.orig	2019-02-28 01:18:21.000000000 +0300
++++ build/autoconf/compiler-opts.m4	2019-03-07 00:38:23.687807000 +0300
+@@ -153,7 +153,7 @@
+             [echo 'int foo() {return 42;}' \
+                   'int bar() {return 1;}' \
+                   'int main() {return foo();}' > conftest.${ac_ext}
+-            if AC_TRY_COMMAND([${CC-cc} -o conftest.${ac_objext} $CFLAGS $MOZ_DEBUG_FLAGS -c conftest.${ac_ext} 1>&2]) &&
++            if AC_TRY_COMMAND([${CC-cc} -o conftest.${ac_objext} -fPIC $CFLAGS $MOZ_DEBUG_FLAGS -c conftest.${ac_ext} 1>&2]) &&
+                 AC_TRY_COMMAND([${CC-cc} -o conftest${ac_exeext} $LDFLAGS $MOZ_DEBUG_FLAGS -Wl,--gc-sections conftest.${ac_objext} $LIBS 1>&2]) &&
+                 test -s conftest${ac_exeext} -a -s conftest.${ac_objext}; then
+                  if test "`$PYTHON -m mozbuild.configure.check_debug_ranges conftest.${ac_objext} conftest.${ac_ext}`" = \
Index: www/firefox/files/patch-build_autoconf_expandlibs.m4
===================================================================
--- www/firefox/files/patch-build_autoconf_expandlibs.m4	(nonexistent)
+++ www/firefox/files/patch-build_autoconf_expandlibs.m4	(working copy)
@@ -0,0 +1,11 @@
+--- build/autoconf/expandlibs.m4.orig	2019-02-28 01:18:21.000000000 +0300
++++ build/autoconf/expandlibs.m4	2019-03-07 00:41:44.064388000 +0300
+@@ -18,7 +18,7 @@
+      dnl must pass the LTO CFLAGS to the compile command, and the LTO
+      dnl LDFLAGS to all subsequent link commands.
+      dnl https://sourceware.org/bugzilla/show_bug.cgi?id=23600
+-     if AC_TRY_COMMAND(${CC-cc} -o conftest.${OBJ_SUFFIX} -c $MOZ_LTO_CFLAGS $CFLAGS $CPPFLAGS conftest.${ac_ext} 1>&5) && test -s conftest.${OBJ_SUFFIX}; then
++     if AC_TRY_COMMAND(${CC-cc} -o conftest.${OBJ_SUFFIX} -c $MOZ_LTO_CFLAGS -fPIC $CFLAGS $CPPFLAGS conftest.${ac_ext} 1>&5) && test -s conftest.${OBJ_SUFFIX}; then
+          echo "INPUT(conftest.${OBJ_SUFFIX})" > conftest.list
+          if test "$CC_TYPE" = "msvc" -o "$CC_TYPE" = "clang-cl"; then
+              link="$LINKER -OUT:conftest${ac_exeext}"