[LLVMdev] Building CFE on MinGW

[Reid Spencer]

I haven't seen this before, but it is vaguely reminiscent of a
permissions problem. Permissions can be weird under cygwin/mingw. You
have to ensure both the windows and the unix permissions allow the files
to be read. In this environment, sometimes "file not found" can actually
mean "directory not readable".

Reid.

On Sat, 2006-04-22 at 13:38 -0400, Greg Pettyjohn wrote:
> I've blown a couple of weekends trying to build under MinGW.
> 
> I can build the llvm tools with only a couple of minor hassles, but can't
> seem to make any headway with the C Front End
> 
> Most errors I run into involve not being able to find header files.
> The most frustrating part is that the error messages report that the file
> can't be found, and then proceed to give a path to where the file actually
> is located.
> 
> In the example below, the header "config/i386/xm-mingw32.h" cannot be
> found. BUT the include path, specified by "-I../../src/gcc/", leads right
> to the desired header.
> 
> I can work-around this particular error by copying files out of the src
> directory into the corresponding places in the build directory.
> 
> I'm left believing that something is fundamentally wront with my setup.
> 
> Has anyone had any recent success building the CFE on MinGW?
> 
> Thanks.
> 
> $ xgcc -B/home/llvm-1.7/cfrontend/build/gcc
> -B/home/llvm-1.7/cfrontend/install/i686-pc-mingw32/bin/ -B/home/llvm-1.7/
> cfrontend/install/i686-pc-mingw32/lib/ -isystem
> /home/llvm-1.7/cfrontend/install/i686-pc-mingw32/include -isystem /ho
> me/llvm-1.7/cfrontend/install/i686-pc-mingw32/sys-include -O2
> -I../../src/gcc/../winsup/w32api/include -DIN_GCC -DDEF
> AULT_TARGET_MACHINE=\"i686-pc-mingw32\" -W -Wall -Wwrite-strings
> -Wstrict-prototypes -Wmissing-prototypes -isystem ./
> include -g -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED -I. -I -I../../src
> -I../../src/gcc/ -I../../src/gcc/../include -DL_m
> uldi3 -c ../../src/gcc/libgcc2.c -o libgcc/./_muldi3.o
> In file included from ../../src/gcc/libgcc2.c:40:
> ./tconfig.h:5:37: config/i386/xm-mingw32.h: No such file or directory
> In file included from ../../src/gcc/libgcc2.c:41:
> ../../src/gcc/tsystem.h:75:19: stdio.h: No such file or directory
> ../../src/gcc/tsystem.h:78:23: sys/types.h: No such file or directory
> ../../src/gcc/tsystem.h:81:19: errno.h: No such file or directory
> ../../src/gcc/tsystem.h:88:20: string.h: No such file or directory
> ../../src/gcc/tsystem.h:89:20: stdlib.h: No such file or directory
> ../../src/gcc/tsystem.h:90:20: unistd.h: No such file or directory
> In file included from
> C:/msys/1.0/home/llvm-1.7/cfrontend/build/gcc/include/limits.h:122,
>                  from
> C:/msys/1.0/home/llvm-1.7/cfrontend/build/gcc/include/syslimits.h:7,
>                  from
> C:/msys/1.0/home/llvm-1.7/cfrontend/build/gcc/include/limits.h:11,
>                  from ../../src/gcc/tsystem.h:93,
>                  from ../../src/gcc/libgcc2.c:41:
> ./include/limits.h:122:61: no include path in which to search for limits.h
> In file included from ../../src/gcc/libgcc2.c:41:
> ../../src/gcc/tsystem.h:96:18: time.h: No such file or directory
> In file included from ../../src/gcc/libgcc2.c:43:
> ./tm.h:4:31: config/i386/i386.h: No such file or directory
> ./tm.h:5:31: config/i386/unix.h: No such file or directory
> ./tm.h:6:30: config/i386/bsd.h: No such file or directory
> ./tm.h:7:30: config/i386/gas.h: No such file or directory
> ./tm.h:8:29: config/dbxcoff.h: No such file or directory
> ./tm.h:9:34: config/i386/cygming.h: No such file or directory
> ./tm.h:10:34: config/i386/mingw32.h: No such file or directory
> ./tm.h:11:23: defaults.h: No such file or directory
> In file included from ../../src/gcc/libgcc2.c:44:
> ../../src/gcc/llvm-out.h:69: error: syntax error before '*' token
> ../../src/gcc/llvm-out.h:69: warning: function declaration isn't a
> prototype
> ../../src/gcc/libgcc2.c: In function `__mulhi3':
> 
> ../../src/gcc/libgcc2.c:502: error: `BITS_PER_UNIT' undeclared (first use
> in this function)
> ../../src/gcc/libgcc2.c:502: error: (Each undeclared identifier is
> reported only once
> ../../src/gcc/libgcc2.c:502: error: for each function it appears in.)
> 
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