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List:       mingw-users
Subject:    Re: [Mingw-users] Trouble locating gc.h with gcc/MinGW
From:       Earnie Boyd <earnie () users ! sourceforge ! net>
Date:       2012-09-13 11:25:06
Message-ID: CA+sc5mn2kONTbSWy5S-VcvpL7Ps+ESvg3Rb2W7zxg_i1S7Vomg () mail ! gmail ! com
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On Wed, Sep 12, 2012 at 9:26 PM, Andrew Pennebaker wrote:
> I have download, configured, compiled, and installed BoehmGC in MinGW, but
> when I try to compile a test program that uses BoehmGC, gcc fails to find
> the library.
> 
> $ make
> gcc -o boehmtest boehmtest.c -lgc
> boehmtest.c:3:16: fatal error: gc.h: No such file or directory
> 
> I found gc.h in MinGW's /usr/local/include/gc directory, but adding
> -I/usr/local/include/gc and -L/usr/local/include/gc don't help.
> 

I've read the other responses you should be able to use the following
command but I have no way to test it.  Also I assume you are within
the MSYS shell and that the file libgc.a or libgc.dll.a exists in
/usr/local/lib.

$ gcc -I/usr/local/include -L/usr/local/lib -o boehmtest boehmtest.c -lgc

To avoid needing to specify -I and -L you should use --prefix=/mingw
when building and installing the library.  The MinGW GCC while it
looks in /usr/local/[lib|include] by default doesn't find it because
the path doesn't exist at the root of the current working drive.

-- 
Earnie
-- https://sites.google.com/site/earnieboyd

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