GCC can't locate headers even when the search directory is correct

Question

Once again, GCC is making me feel like an idiot for having trouble with the simplest things. I've included a header:

#include "PDL.h"

Then, I try to compile:

arm-none-linux-gnueabi-gcc -I/cygdrive/c/PalmPDK/include -I../lua-5.1.4/lua-webos/include -O2 -Wall -shared -nostdlib -mcpu=arm1136jf-s -mfpu=vfp -mfloat-abi=softfp -lpdl

But it says:

PDL.h: no such file or directory

I can change into the include directory I specified above and see PDL.h is there, but GCC just doesn't see it.

Answer 1

If you have spaces in the path you'll need to escape them or surround the path with double quotes.

Answer 2

Assuming you're on a Linux box, or some flavor of Unix:

ls -l /
ls -l /cygdrive
ls -l /cygdrive/c
ls -l /cygdrive/c/PalmPDK
ls -l /cygdrive/c/PalmPDK/include

You will probably find your answer in the results of one of the commands listed above.

Answer 3

/cygdrive is something specific to cygwin, so if gcc isn't compiled to use the cygwin unix emulation layer, it won't search it. Try using -IC:/PalmPDK/include.