[Hero, G2 Touch Android Development] kendong2:
two things:

1. recovery compiling

i am trying to compile the recovery binary for the recovery image. so i go to the root of the android source, which i downloaded with the instructions from here: http://source.android.com/download

when i run "make recovery" i get the following error:

kendon@nx:/media/data/mydroid$ make recovery
============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=2.1-update1
TARGET_PRODUCT=generic
TARGET_BUILD_VARIANT=eng
TARGET_SIMULATOR=
TARGET_BUILD_TYPE=release
TARGET_ARCH=arm
HOST_ARCH=x86
HOST_OS=linux
HOST_BUILD_TYPE=release
BUILD_ID=ECLAIR
============================================
make: *** No rule to make target `out/target/product/generic/obj/PACKAGING/ota_keys_inc_intermediates/keys.inc', needed by `out/target/product/generic/obj/EXECUTABLES/recovery_intermediates/install.o'. Stop.

having read somewhere about the recovery needing a compiled android first, i tried to run "make", which ran into the same error after about one hour of compiling (tons of other messages of course). any help is appreciated, i believe it is not a big problem...

2. c code cross compiling

i am trying to compile some (very basic) c code with the help of the cross compiler. the code contains the following includes:

#include <sys/stat.h>
#include <sys/types.h>

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>

the code compiles flawless with gcc, but when i try to compile it for android i get the following:

kendon@nx:~/Desktop$ arm-eabi-gcc test.c -o armtest
test.sh.x.c:89:22: error: sys/stat.h: No such file or directory
test.sh.x.c:90:23: error: sys/types.h: No such file or directory
test.sh.x.c:92:19: error: errno.h: No such file or directory
test.sh.x.c:93:19: error: stdio.h: No such file or directory
test.sh.x.c:94:20: error: stdlib.h: No such file or directory
test.sh.x.c:95:20: error: string.h: No such file or directory
test.sh.x.c:96:18: error: time.h: No such file or directory
test.sh.x.c:97:20: error: unistd.h: No such file or directory
test.sh.x.c: In function 'key_with_file':
test.sh.x.c:159: error: array type has incomplete element type
test.sh.x.c:160: error: array type has incomplete element type
test.sh.x.c:166: warning: incompatible implicit declaration of built-in function 'memset'
test.sh.x.c: In function 'chkenv':
test.sh.x.c:211: warning: incompatible implicit declaration of built-in function 'sprintf'
test.sh.x.c:212: warning: assignment makes pointer from integer without a cast
test.sh.x.c:216: warning: incompatible implicit declaration of built-in function 'strlen'
test.sh.x.c:220: warning: incompatible implicit declaration of built-in function 'strdup'
test.sh.x.c:223: warning: incompatible implicit declaration of built-in function 'sscanf'
test.sh.x.c:235:24: error: sys/ptrace.h: No such file or directory
test.sh.x.c:237:22: error: sys/wait.h: No such file or directory
test.sh.x.c:238:19: error: fcntl.h: No such file or directory
test.sh.x.c:239:20: error: signal.h: No such file or directory
test.sh.x.c: In function 'untraceable':
test.sh.x.c:258: warning: incompatible implicit declaration of built-in function 'sprintf'
test.sh.x.c:261: error: 'O_RDWR' undeclared (first use in this function)
test.sh.x.c:261: error: (Each undeclared identifier is reported only once
test.sh.x.c:261: error: for each function it appears in.)
test.sh.x.c:261: error: 'O_EXCL' undeclared (first use in this function)
test.sh.x.c:262: error: 'errno' undeclared (first use in this function)
test.sh.x.c:262: error: 'EBUSY' undeclared (first use in this function)
test.sh.x.c:263: error: 'PTRACE_ATTACH' undeclared (first use in this function)
test.sh.x.c:265: error: 'SIGCONT' undeclared (first use in this function)
test.sh.x.c:268: error: 'SIGKILL' undeclared (first use in this function)
test.sh.x.c:270: warning: incompatible implicit declaration of built-in function '_exit'
test.sh.x.c:278: warning: incompatible implicit declaration of built-in function '_exit'
test.sh.x.c: In function 'xsh':
test.sh.x.c:291: error: 'time_t' undeclared (first use in this function)
test.sh.x.c:291: error: expected expression before ')' token
test.sh.x.c:292: error: expected expression before ')' token
test.sh.x.c:307: warning: incompatible implicit declaration of built-in function 'calloc'
test.sh.x.c:323: warning: incompatible implicit declaration of built-in function 'malloc'
test.sh.x.c:326: warning: incompatible implicit declaration of built-in function 'memset'
test.sh.x.c:327: warning: incompatible implicit declaration of built-in function 'memcpy'
test.sh.x.c:333: warning: incompatible implicit declaration of built-in function 'malloc'
test.sh.x.c:336: warning: incompatible implicit declaration of built-in function 'sprintf'
test.sh.x.c: In function 'main':
test.sh.x.c:370: warning: incompatible implicit declaration of built-in function 'fprintf'
test.sh.x.c:370: error: 'stderr' undeclared (first use in this function)
test.sh.x.c:371: error: 'errno' undeclared (first use in this function)

from my noob point of view that means the compiler cannot find the includes. so where can i find them (i asssume in the android source tree in bionic/libc/include/), and how do i get the compiler to find them? i tried "--sysroot=", but i am not sure what part of the path is expected exactly...