putenv with mingw32

[Sylvain Beucler]

Hello,

I imported module 'putenv'.
When cross-compiling through mingw32, I get the following errors at link time:

i586-mingw32msvc-gcc  -g -O2 -Wall -std=c99 
-I/usr/local/i586-mingw32msvc/include    
-I/usr/local/i586-mingw32msvc/lib/libffi-3.0.7/include   
-I/usr/local/i586-mingw32msvc/include/SDL -D_GNU_SOURCE=1 -Dmain=SDL_main `: 
/usr/local/bin`  -o freedink.exe bgm.o dinkini.o dinkc.o dinkc_bindings.o 
dinkc_console.o dinkc_sp_custom.o dinkvar.o fastfile.o game_engine.o str_util.o 
io_util.o sfx.o gfx.o gfx_fade.o gfx_tiles.o gfx_utils.o gfx_fonts.o init.o 
rect.o input.o binreloc.o freedink_xpm.o paths.o log.o gfx_sprites.o 
vgasys_fon.o msgbox.o i18n.o  SDL_rwops_libzip.o freedink.o update_frame.o 
woeres.o ../gnulib/lib/libgnu.a ../intl/libintl.a   -lSDL_mixer -lSDL_image 
-lSDL_ttf -lSDL_gfx  -L/usr/local/i586-mingw32msvc/lib -lzip -lz    
-L/usr/local/i586-mingw32msvc/lib -lffi   -L/usr/local/i586-mingw32msvc/lib 
-lmingw32 -lSDLmain -lSDL -mwindows -lm
../gnulib/lib/libgnu.a(putenv.o): In function `rpl_putenv':
/usr/src/t/freedink-1.08.20081207/cross/gnulib/lib/../../../gnulib/lib/putenv.c:107:
 undefined reference to `_environ'
/usr/src/t/freedink-1.08.20081207/cross/gnulib/lib/../../../gnulib/lib/putenv.c:120:
 undefined reference to `_environ'
/usr/src/t/freedink-1.08.20081207/cross/gnulib/lib/../../../gnulib/lib/putenv.c:126:
 undefined reference to `_environ'
../gnulib/lib/libgnu.a(putenv.o): In function `_unsetenv':
/usr/src/t/freedink-1.08.20081207/cross/gnulib/lib/../../../gnulib/lib/putenv.c:70:
 undefined reference to `_environ'
collect2: ld returned 1 exit status


I tried to add the 'environ' module as well but this didn't change.


Incidentally, compilation works when I remove the 'putenv'
module. Maybe the 'putenv' function need not be replaced in this case?


I don't really understand where '_environ' comes from (this is not the
'__environ' from gnulib with double '_') - as far as I understand
mingw32 tend to add a '_' to lots of core functions for some reason.

-- 
Sylvain