From: soorya@calgary.hp.com ("Soorya Kuloor") Subject: Env variable name trouble 3 Dec 1996 17:01:19 -0800 Sender: daemon@cygnus.com Approved: cygnus.gnu-win32@cygnus.com Distribution: cygnus Message-ID: <199612040009.AA262788182.cygnus.gnu-win32@hpcpdca.calgary.hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Original-To: Original-Cc: X-Msmail-Priority: Normal X-Priority: 3 X-Mailer: Microsoft Internet Mail 4.70.1155 Original-Sender: owner-gnu-win32@cygnus.com Hi, (This mail is a bit long. So please be patient.) I use GNU-WIN32/bash on a machine with the following config: CPU : P6/200 OS: WinNT 4.0 GNU-WIN32 beta 16 I set an environment variable in bash with mixed case name, for example includeFilesDir as export includeFilesDir=blablabla Then if I start a subshell, in the subshell the name of the env variable gets changed to INCLUDEFILESDIR, so echo $includeFilesDir in the subshell does not work. Similarly, the following source code when compiled using gcc and MS Visual C++ 4.2 behaves differently. ---------------------------------------------------------------------------- ------------------------------- #include extern char **environ; main() { int i; char *p; for(i = 0; ; i++) { p = environ[i]; if(p == NULL) break; else printf("%s\n", p); } } ---------------------------------------------------------------------------- ------------------------------------ In case of gcc generated executable, all the env variable names are in uppercase, whereas VC++ generated executable retains case. This happens even if I run the programs from dos-shell. So is it something to do with how libc.a/crtxx.o/cygwin32.dll work?? Another interesting observation: I got tcl7.6 win32 pre-compiled binaries from sun and installed it. It also uppercased the environment variables names (env array). (tcl7.6 does not use any of GNU-WIN32 tools on NT). However when I rebuilt tcl7.6 from source on NT the problem went away. The newly built tcl76 shell now retains case. So, now I am thoroughly confused. Has it got something to do with the VC++ 4.2 version of the compiler that I am using? I don't know which compiler was used to build tcl7.6 prebuilt binaries by Sun. Tcl7.6 builds with both BC++ and VC++ compilers. Any help as to how to fix this problem, or a work around (other than using all upper case env variable names :-)) this problem will be greatly appreciated. Thanks, bye, Soorya ------------ soorya@calgary.hp.com - For help on using this list, send a message to "gnu-win32-request@cygnus.com" with one line of text: "help".