I have a shell script which is run as root (with sudo) that contains the following line
(split here for readability):
$STTOOLPATH/sh4-linux-gcc -O2 $EXTRA_PREPROCESSOR_DEFINE $RELEASE_DEFINE \
-I../../../../Components/Messaging -I../AvRouting/AVRD/Main -I../IPC/common_files \
-I../OSAbstraction -I../IPC/LPMLib -I../../Drivers/LPM -I../../Drivers/AVRDriver \
-I../../Drivers/Diagnostics -I../../../LPM/share -I../../../LPM/LPMcode \
-I$KERNELSOURCES/include ../IPC/LPMLib/*.c ./xxxx_init.c ./init_frame_buffer.c \
./init_v4l.c -o $FILESYSTEM_TARGET/sbin/xxxx_init || cleanup 1
Recently, we moved some header files from ../../../LPM/LPMcode to ../../../LPM/share,
both of which are listed with -I in the compile line above. When the driver tries to
compile the init_frame_buffer.c file, it complains that it cannot find a particular
include file that was moved from LPMcode to share. Here is the strange part: when
I add -save-temps to the above line, the resulting init_frame_buffer.i file clearly
shows the contents of the missing include file. If I cut and past the above line in
the script, pre-pend "echo" and remove the trailing "|| cleanup 1" so I can capture
the command line, and then cut & paste that command line into my xterm window, it works
just fine. If I copy the troublesome include file from share to LPMcode it also works.
I've tried messing with the order of things on the gcc command line to no avail. How
can I debug this further? Why is gcc getting confused? In case it matters, here is
the compiler version, which I am stuck with since it's delivered by our chip vendor:
sh4-linux-gcc (GCC) 4.2.4 (snapshot) (STMicroelectronics/Linux Base 4.2.4-54)
Copyright (C) 2007 Free Software Foundation, Inc.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
And for completeness' sake, here is the actual command line from the echo command
and (truncated) compiler output of the error:
/opt/STM/STLinux-2.3/devkit/sh4/bin/sh4-linux-gcc -save-temps -O2 \
-I../../../../Components/Messaging -I../AvRouting/AVRD/Main -I../IPC/common_files \
-I../OSAbstraction -I../IPC/LPMLib -I../../Drivers/LPM -I../../Drivers/AVRDriver \
-I../../Drivers/Diagnostics -I../../../LPM/share -I../../../LPM/LPMcode \
-I/opt/STM/STLinux-2.3/devkit/sources/kernel/havana-linux-sh4/include ../IPC/LPMLib/*.c \
./xxxx_init.c ./init_frame_buffer.c ./init_v4l.c -o /dev/shm/usb_update.10255/filesystem/sbin/xxxx_init
./init_frame_buffer.c:27:25: error: ipc_defines.h: No such file or directory
./init_frame_buffer.c: In function ‘init_frame_buffer’:
