Hello, I have a C file and .h file which i can easily compile on a 64 bit linux platform.( Through eclipse IDE. In the compiler option, i enable -std=c99. Now, with the same file, i want to compile it on c++ compiler. (the gcc compiler version i am using is 4.2.2) So i add extern c to the .h files and rename the .c file to c++. I used g++ compiler when i got the error " enable c99 compiler option. I tried all the options given in the gcc manual but without success. I tried all of the below -std= Determine the language standard. This option is currently only supported when compiling C or C++. A value for this option must be provided; possible values are `c89' `iso9899:1990' ISO C90 (same as -ansi). `iso9899:199409' ISO C90 as modified in amendment 1. `c99' `c9x' `iso9899:1999' `iso9899:199x' ISO C99. Note that this standard is not yet fully supported; see http://gcc.gnu.org/gcc-4.0/c99status.html for more information. The names `c9x' and `iso9899:199x' are deprecated. `gnu89' Default, ISO C90 plus GNU extensions (including some C99 features). `gnu99' `gnu9x' ISO C99 plus GNU extensions. When ISO C99 is fully implemented in GCC, this will become the default. The name `gnu9x' is deprecated. `c++98' The 1998 ISO C++ standard plus amendments. `gnu++98' Am i missing something. ? thanks. -- View this message in context: http://old.nabble.com/Trouble-Compiling-c%2B%2B-file-on-Linux-platform-and-eclipse-IDE-tp33252593p33252593.html Sent from the gcc - Help mailing list archive at Nabble.com.