One of the requirements for building the zsnes source is that you have SDL installed. Zsnes gave me this error message when i ran ./configure to compile zsnes:

loading cache ./config.cache
checking for gcc... gcc
checking whether the C compiler (gcc -pipe -I. -Wall ) works... yes
checking whether the C compiler (gcc -pipe -I. -Wall ) is a cross-compiler... nochecking whether we are using GNU C... yes
checking whether gcc accepts -g... yes
checking for nasm... /usr/bin/nasm
checking for a BSD compatible install... /usr/bin/ginstall -c
checking host system type... i686-pc-linux-gnu
checking target system type... i686-pc-linux-gnu
checking build system type... i686-pc-linux-gnu
checking how to run the C preprocessor... gcc -E
checking for X... libraries /usr/X11/lib, headers
checking for sdl-config... /usr/local/bin/sdl-config
checking for SDL - version >= 1.2.0... no
*** Could not run SDL test program, checking why...
*** The test program failed to compile or link. See the file config.log for the
*** exact error that occured. This usually means SDL was incorrectly installed
*** or that you have moved SDL since it was installed. In the latter case, you
*** may want to edit the sdl-config script: /usr/local/bin/sdl-config
configure: error: SDL >= 1.2.0 is required

here's where sdl installed itself: (I didn't do anything fancy when building SDL, just ./configure, make, make install)

bash-2.05b# whereis SDL
SDL: /usr/include/SDL

is there some variable i need to alter in some file that tells zsnes where to look? shouldn't it look in the default directory where SDL installs itself? Apparently it doesn't because I didn't do anything.

thanks in advance to anyone that can help!

Is your version of SDL is 1.2.0 or greater? It looks like that may be what it's complaining about. Does the config.log give any clues?

my version is 1.2.6, so i dont think that's the problem. looking in config.log, it looks like the problem is it can't find SDL.h. this file is in /usr/local/include/SDL. do i need to move it somewhere?

configure:1081: checking for X
configure:1148: gcc -E conftest.c >/dev/null 2>conftest.out
configure:1224: gcc -o conftest -pipe -I. -Wall -D__LINUX__ conftest.c -lXt 1>&5
configure: In function `main':
configure:1220: warning: implicit declaration of function `XtMalloc'
/usr/lib/gcc-lib/i486-slackware-linux/3.2.3/../../../../i486-slackware-linux/bin/ld: cannot find -lXt
collect2: ld returned 1 exit status
configure: failed program was:
#line 1217 "configure"
#include "confdefs.h"

configure:1421:17: SDL.h: No such file or directory
configure: failed program was:
#line 1416 "configure"
#include "confdefs.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "SDL.h"

char*
my_strdup (char *str)
{
char *new_str;

if (str)
{
new_str = (char *)malloc ((strlen (str) + 1) * sizeof(char));
strcpy (new_str, str);
}
else
new_str = NULL;

return new_str;
}

int main (int argc, char *argv[])
{
int major, minor, micro;
char *tmp_version;

/* This hangs on some systems (?)
system ("touch conf.sdltest");
*/
{ FILE *fp = fopen("conf.sdltest", "a"); if ( fp ) fclose(fp); }

/* HP/UX 9 (%@#!) writes to sscanf strings */
tmp_version = my_strdup("1.2.0");
if (sscanf(tmp_version, "%d.%d.%d", &major, &minor, &micro) != 3) {
printf("%s, bad version string\n", "1.2.0");
exit(1);
}

if ((1 > major) ||
((1 == major) && (2 > minor)) ||
((1 == major) && (2 == minor) && (6 >= micro)))
{
return 0;
}
else

{
printf("\n*** 'sdl-config --version' returned %d.%d.%d, but the minimum version\n", 1, 2, 6);
printf("*** of SDL required is %d.%d.%d. If sdl-config is correct, then it is\n", major, minor, micro);
printf("*** best to upgrade to the required version.\n");
printf("*** If sdl-config was wrong, set the environment variable SDL_CONFIG\n");
printf("*** to point to the correct copy of sdl-config, and remove the file\n");
printf("*** config.cache before re-running configure\n");
return 1;
}
}


configure:1526: gcc -o conftest -pipe -I. -Wall -D__LINUX__ -I -I/usr/local/include/SDL -D_REENTRANT -L/usr/X11/lib conftest.c -L/usr/local/lib -Wl,-rpath,/usr/local/lib -lSDL -lpthread 1>&5
configure:1514:17: SDL.h: No such file or directory
configure: failed program was:
#line 1511 "configure"
#include "confdefs.h"

#include <stdio.h>
#include "SDL.h"

int main(int argc, char *argv[])
{ return 0; }
#undef main
#define main K_and_R_C_main

reconfigure SDL, use the prefix switch to install it in /usr/local (or maybe /usr/local/lib ??)

could you please tell me what to type to switch it to a new directory? i'm not sure what you mean.

you DO have the devel. headers installed, right? i think the command to get help for the options w/ configure is ./configure --help

okay...

reconfigured sdl with configure prefix:

./configure --prefix /usr/local

ran make, make install for SDL, then ran ./configure for zsnes...same problem

retried with

./configure --prefix /usr/local/lib

ran make, make install for SDL, ran ./configure for zsnes, same problem

i don't know what development headers are, so if they aren't installed by default they probably aren't installed

well, if you made SDL from source theyre probably installed.

okay...well...it's still not working. any other suggestions?

Will doing a "make install" on SDL install the headers in the right place?

Kubrick: Where are the SDL headers on your drive?

i've been having the same problem. if it helps, i was able to get around the ./configure problem by finding the lines that said #include "SDL.h" and putting the full path in there (/usr/include/SDL/SDL.h). but now it aborts when trying to make... it's like my machine doesn't know to look in that directory for header files or something.

....
gcc -pipe -I. -Wall -D__LINUX__ -I -I/usr/local/include/SDL -D_REENTRANT -D__OPENGL__ -Os -ffast-math -fomit-frame-pointer -fschedule-insns2 -s -march=pentiumpro -o chips/dsp1emu.o -c chips/dsp1emu.c
In file included from chips/dsp1emu.c:20:
gblhdr.h:95:25: SDL.h: No such file or directory
make: *** [chips/dsp1emu.o] Error 1

is there someplace that you can tell bash/gcc what paths to find header files in?

they're in /usr/local/include/SDL

I also have the same problem
My headers SDL-1.2.6 are in /usr/local/include/SDL.
I run Slackware 9.1

got around the configure problem by installing the SDL development headers....they're a separate package after all, available from the sdl site....www.libsdl.org. now i have another problem:

http://www.linuxquestions.org/questi...hreadid=121124

I was having the exact same problem too, but didn't feel like reinstalling SDL so I just changed some lines in the configure script and gblhdr.h.

In the configure script change line 1,421 to look like:
#include <SDL/SDL.h>

and 1,514 to look like:
#include <SDL/SDL.h>

And in gblhdr.h change line 95 to read:
#include <SDL/SDL.h>

Worked for me.