gcc preprocessor and environment variables

[mart_man00]

im trying to to use environment variables in source files with gcc.

in my .bash_profile i have something like "export str="/home/martin"" i can echo $str and get =/home/martin but when i try it with #include i get that the file cant be found, why? how should i do it?

[mart_man00]

acually i just wanted that directory. i wanted to pull of something like

#include "$str/my_string.c"

can i do that?

[mart_man00]

i have to compiled with a seperate command? im i not using a escape character or something when is use #include?

>// why are you #include'ing source files anyway?
i just picked a name. i just wanted to get it working and had more .c's in front of me than .h's.