lwip2 integration

.gitmodules

@@ -0,0 +1,3 @@
+[submodule "lwip2"]
+ path = tools/sdk/lwip2/builder
+ url = https://github.com/d-a-v/esp82xx-nonos-linklayer.git

platform.txt

@@ -18,12 +18,13 @@ compiler.warning_flags.more=-Wall
 compiler.warning_flags.all=-Wall -Wextra
 
 build.lwip_lib=-llwip_gcc
+build.lwip_include=lwip/include
 build.lwip_flags=-DLWIP_OPEN_SRC
 
 compiler.path={runtime.tools.xtensa-lx106-elf-gcc.path}/bin/
 compiler.sdk.path={runtime.platform.path}/tools/sdk
 compiler.libc.path={runtime.platform.path}/tools/sdk/libc/xtensa-lx106-elf
-compiler.cpreprocessor.flags=-D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-I{compiler.sdk.path}/include" "-I{compiler.sdk.path}/lwip/include" "-I{compiler.libc.path}/include" "-I{build.path}/core"
+compiler.cpreprocessor.flags=-D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ "-I{compiler.sdk.path}/include" "-I{compiler.sdk.path}/{build.lwip_include}" "-I{compiler.libc.path}/include" "-I{build.path}/core"
 
 compiler.c.cmd=xtensa-lx106-elf-gcc
 compiler.c.flags=-c {compiler.warning_flags} -Os -g -Wpointer-arith -Wno-implicit-function-declaration -Wl,-EL -fno-inline-functions -nostdlib -mlongcalls -mtext-section-literals -falign-functions=4 -MMD -std=gnu99 -ffunction-sections -fdata-sections

tools/sdk/ld/eagle.app.v6.common.ld

@@ -177,6 +177,7 @@ SECTIONS
  *libstdc++.a:(.literal .text .literal.* .text.*)
  *liblwip_gcc.a:(.literal .text .literal.* .text.*)
  *liblwip_src.a:(.literal .text .literal.* .text.*)
+ *liblwip2.a:(.literal .text .literal.* .text.*)
  *libaxtls.a:(.literal .text .literal.* .text.*)
  *libat.a:(.literal.* .text.*)
  *libcrypto.a:(.literal.* .text.*)

tools/sdk/lwip2/Makefile

@@ -0,0 +1,6 @@
+
+all install clean: builder/Makefile.arduino
+ make -C builder -f Makefile.arduino $@
+
+builder/Makefile.arduino:
+ git submodule update --init --recursive builder