Linking programs with SDL (first time compiling with gcc)

SDL Development
1

First of all, thanks to everyone who has been giving me advice so far. Every new piece of information or way to use commands that I haven’t seen before is helping a lot.

ok. I’m now trying to compile using the following line: gcc sdl-config --cflags SDLtest.c sdl-config --static-libs

for me --static-libs sends the linker to the right files for all the X11 stuff that wasn’t showing up under just plain --libs. (This might not be the best way to resolve the problem with X11. if so let me know.)

NOW, gcc gives me a much smaller set of errors for its output:

/usr/lib/libSDL.a(SDL_fbevents.lo)(.text+0x942): In function find_pid': : undefined reference to__ctype_b’
/usr/lib/libSDL.a(SDL_fbelo.lo)(.text+0x465): In function eloSendQuery': : undefined reference to__ctype_toupper’
/usr/lib/libSDL.a(SDL_fbelo.lo)(.text+0x5f1): In function eloInitController': : undefined reference to__ctype_tolower’
collect2: ld returned 1 exit status

Now how should I go about resolving these? Thanks again for the help with this. Hopefully I’ll be asking much more interesting questions soon :slight_smile: -John---------------------------------
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2

First of all, thanks to everyone who has been giving me advice so far. Every new piece of information or way to use commands that I haven’t seen before is helping a lot.

ok. I’m now trying to compile using the following line: gcc sdl-config --cflags SDLtest.c sdl-config --static-libs

for me --static-libs sends the linker to the right files for all the X11 stuff that wasn’t showing up under just plain --libs. (This might not be the best way to resolve the problem with X11. if so let me know.)

NOW, gcc gives me a much smaller set of errors for its output:

/usr/lib/libSDL.a(SDL_fbevents.lo)(.text+0x942): In function find_pid': : undefined reference to__ctype_b’
/usr/lib/libSDL.a(SDL_fbelo.lo)(.text+0x465): In function eloSendQuery': : undefined reference to__ctype_toupper’
/usr/lib/libSDL.a(SDL_fbelo.lo)(.text+0x5f1): In function eloInitController': : undefined reference to__ctype_tolower’
collect2: ld returned 1 exit status

Now how should I go about resolving these? Thanks again for the help with this. Hopefully I’ll be asking much more interesting questions soon :slight_smile: -John----- Original Message -----
From: John Jung
To: sdl at libsdl.org
Sent: Thursday, January 08, 2004 11:04 AM
Subject: [SDL] linking programs with SDL (first time compiling with gcc)

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i guess try gcc->g++ may help.
g++ sdl-config --cflags SDLtest.c sdl-config --static-libs

3

John Jung wrote:

NOW, gcc gives me a much smaller set of errors for its output:

/usr/lib/libSDL.a(SDL_fbevents.lo)(.text+0x942): In function find_pid': : undefined reference to __ctype_b’
/usr/lib/libSDL.a(SDL_fbelo.lo)(.text+0x465): In function eloSendQuery': : undefined reference to __ctype_toupper’
/usr/lib/libSDL.a(SDL_fbelo.lo)(.text+0x5f1): In function eloInitController': : undefined reference to __ctype_tolower’
collect2: ld returned 1 exit status

Try including <ctype.h> and/or use nm to find the library which contains
these symbols. Maybe the package isn’t really compatible with
your (g)libc. In this case you probably have to compile SDL yourself.–
Christian
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