| .TH IM_VIPSHOME 3 "8 March 2001" |
| .SH NAME |
| im_guess_prefix, im_guess_libdir \- try to guess install directory |
| .SH SYNOPSIS |
| .B #include <vips/vips.h> |
| |
| .B const char *im_guess_prefix( const char *argv0, |
| .B const char *env_name ) |
| |
| .B const char *im_guess_libdir( const char *argv0, |
| .B const char *env_name ) |
| |
| .SH DESCRIPTION |
| .B im_guess_prefix(3) |
| tries to guess the install directory. You should pass in the value of |
| argv[0] (the name your program was run as) as a clue to help it out, plus |
| the name of the environment variable you let the user override your package |
| install area with (eg. "VIPSHOME"). |
| |
| On success, |
| .B im_guess_prefix(3) |
| returns the prefix it discovered, and as a side effect, sets the environment |
| variable (if it's not set). |
| |
| .B im_guess_prefix(3) |
| is useful for programs in the VIPS distribution and contrib which need to be |
| able to find data files. |
| |
| Don't free the return string! |
| |
| .B im_guess_libdir(3) |
| works exactly as |
| .B im_guess_prefix(3) |
| but, if vips has not been moved since configure, returns the libdir configure |
| setting. If vips has been moved, it returns prefix/lib. |
| |
| .SH RETURN VALUE |
| The function returns NULL on failure. |
