Updated esp32 toolchain to 2019r1.

Fixed up weird permissions in the esp32 toolchain tar ball.

Patched configure to accept bash 5 as being >= 3.1.

Makefile

@@ -18,7 +18,11 @@ esp8266: build/toolchain-esp8266-$(VER).tar.xz
 build/lx106/Makefile:
 	$Qcd build && git clone --recursive https://github.com/pfalcon/esp-open-sdk.git lx106
 
-esp8266-$(VER)/bin/xtensa-lx106-elf-gcc: build/lx106/Makefile
+build/lx106/patched: build/lx106/Makefile
+	$Qcd "$(dir $@)" && patch -p0 < ../../esp8266-configure.patch
+	@touch $@
+
+esp8266-$(VER)/bin/xtensa-lx106-elf-gcc: build/lx106/patched
 	$Qecho CT_STATIC_TOOLCHAIN=y >> $(dir $<)/crosstool-config-overrides
 	$Qcd "$(dir $<)" && $(MAKE) STANDALONE=n TOOLCHAIN="$(TOPDIR)/esp8266-$(VER)" toolchain libhal
 
@@ -30,10 +34,14 @@ build/toolchain-esp8266-$(VER).tar.xz: esp8266-$(VER)/bin/xtensa-lx106-elf-gcc
 
 
 build/esp32/bootstrap:
-	$Qcd build && git clone -b xtensa-1.22.x https://github.com/espressif/crosstool-NG.git esp32
+	$Qcd build && git clone -b esp32-2019r1_ctng-1.23.x https://github.com/espressif/crosstool-NG.git esp32
+	@touch $@
+
+build/esp32/patched: build/esp32/bootstrap
+	$Qcd "$(dir $@)" && patch -p0 < ../../esp32-configure.patch
 	@touch $@
 
-build/esp32/Makefile: build/esp32/bootstrap
+build/esp32/Makefile: build/esp32/patched
 	$Qcd "$(dir $@)" && ./bootstrap && ./configure --prefix="`pwd`"
 
 build/esp32/ct-ng: build/esp32/Makefile
@@ -46,6 +54,8 @@ build/esp32/.config: build/esp32/ct-ng
 
 esp32-$(VER)/bin/xtensa-esp32-elf-gcc: build/esp32/.config
 	$Qcd "$(dir $<)" && ./ct-ng build
+	@echo Fixing up directory permissions...
+	$Qchmod -R u+w "esp32-$(VER)"
 
 build/toolchain-esp32-$(VER).tar.xz: esp32-$(VER)/bin/xtensa-esp32-elf-gcc
 	@echo 'Packaging toolchain ($@)...'

esp32-configure.patch

@@ -0,0 +1,11 @@
+--- configure.orig	2019-07-31 16:33:42.340434597 +1000
++++ configure.ac	2019-07-31 16:35:51.013963106 +1000
+@@ -151,7 +151,7 @@
+     [GNU bash >= 3.1],
+     [bash],
+     [bash],
+-    [^GNU bash, version (3\.[1-9]|4)])
++    [^GNU bash, version (3\.[1-9]|4|5)])
+
+ # We need a awk that *is* GNU awk
+ CTNG_PROG_VERSION_REQ_STRICT([AWK],

esp8266-configure.patch

@@ -0,0 +1,11 @@
+--- crosstool-NG/configure.orig	2019-07-31 17:38:30.662644555 +1000
++++ crosstool-NG/configure.ac	2019-07-31 17:38:43.786800527 +1000
+@@ -190,7 +190,7 @@
+ AC_CACHE_CHECK([for bash >= 3.1], [ac_cv_path__BASH],
+     [AC_PATH_PROGS_FEATURE_CHECK([_BASH], [bash],
+         [[_BASH_ver=$($ac_path__BASH --version 2>&1 \
+-                     |$EGREP '^GNU bash, version (3\.[1-9]|4)')
++                     |$EGREP '^GNU bash, version (3\.[1-9]|4|5)')
+           test -n "$_BASH_ver" && ac_cv_path__BASH=$ac_path__BASH ac_path__BASH_found=:]],
+         [AC_MSG_RESULT([no])
+          AC_MSG_ERROR([could not find bash >= 3.1])])])