I've got a problem in compiling a dll

[Mickael Pruvost]

all the program seems good and all libraries are recognized but when i try to compile the project i've got this error:
\DEV-CPP\BIN\..\lib\gcc-lib\mingw32\3.2\tradcpp0.exe C:\Mes documents\DEA IAA\brighten\C
invalid option `-std=c89'
where does this "invalid option" comes from? the program says:"this is a linker error! it's a generic problem in your source files"

and a second error appears
Unable to open object file C:\DEV-CPP\BIN\dlltool
../../../WiT/bin/debug/Brighten.o
is it linking to the first?

Can you answer me fast please?

[Mickael Pruvost]

I've found!