Added a script to copy all header files into a sysroot

CMakeLists.txt

@@ -18,6 +18,7 @@ include(${CMAKE_CURRENT_SOURCE_DIR}/cmake/platform.cmake)
 platform_config(${PHOTON_TARGET})
 
 message(STATUS "Target: ${machine}-${platform}")
+file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/target.txt "${machine}-${platform}")
 
 include(${CMAKE_CURRENT_SOURCE_DIR}/photon/libc/sys/${platform}/config.cmake)
 

scripts/generate-sysroot.py

@@ -0,0 +1,56 @@
+#!/usr/bin/env python3
+import sys
+import os
+import errno
+from shutil import copy2
+
+
+def get_platform(out_dir):
+    platform_file = open(out_dir + '/target.txt')
+    content = platform_file.read()
+    spl = content.find('-')
+    return (content[:spl], content[spl + 1:])
+
+
+def copy_headers(src_dir, dest_dir):
+    for filename in os.listdir(src_dir):
+        if filename.endswith(".h") and not filename.startswith("__"):
+            copy2(os.path.join(src_dir, filename), dest_dir)
+            continue
+        else:
+            continue
+
+
+def mkdir_p(path):
+    try:
+        os.makedirs(path)
+    except OSError as exc:
+        if exc.errno == errno.EEXIST and os.path.isdir(path):
+            pass
+        else:
+            raise
+
+
+source_dir = sys.argv[1]
+bin_dir = sys.argv[2]
+sysroot_dir = sys.argv[3]
+(machine, platform) = get_platform(bin_dir)
+
+base_headers_path = '{}/photon/libc/include'.format(source_dir)
+platform_headers_path = '{}/photon/libc/sys/{}'.format(source_dir, platform)
+platform_sys_headers_path = '{}/photon/libc/sys/{}/sys'.format(source_dir, platform)
+platform_sys_arch_headers_path = '{}/photon/libc/sys/{}/machine/{}'.format(source_dir, platform, machine)
+
+machine_arch_headers_path = '{}/photon/libc/machine/{}'.format(source_dir, machine)
+machine_generic_headers_path = '{}/photon/libc/include/machine'.format(source_dir)
+
+mkdir_p(sysroot_dir + '/usr/include/sys')
+mkdir_p(sysroot_dir + '/usr/include/machine')
+
+copy_headers(base_headers_path, sysroot_dir + '/usr/include')
+copy_headers(platform_headers_path, sysroot_dir + '/usr/include')
+copy_headers(platform_sys_headers_path, sysroot_dir + '/usr/include/sys')
+copy_headers(platform_sys_arch_headers_path, sysroot_dir + '/usr/include/sys')
+
+#copy_headers(machine_arch_headers_path, sysroot_dir + '/usr/include/machine')
+copy_headers(machine_generic_headers_path, sysroot_dir + '/usr/include/machine')