Rust is failing to build on i686-pc-mingw32

[cnd]

llvm[3]: ======= Finished Linking Release+Asserts Executable yaml2obj (without symbols)
make[3]: Leaving directory `/d/Heather/Contrib/P/rust/i686-pc-mingw32/llvm/tools/yaml2obj'
make[3]: Entering directory `/d/Heather/Contrib/P/rust/i686-pc-mingw32/llvm/tools/llvm-c-test'
llvm[3]: Compiling calc.c for Release+Asserts build
llvm[3]: Compiling disassemble.c for Release+Asserts build
llvm[3]: Compiling helpers.c for Release+Asserts build
llvm[3]: Compiling include-all.c for Release+Asserts build
In file included from d:/Heather/Contrib/P/rust/src/llvm/tools/llvm-c-test/include-all.c:33:0:
d:/Heather/Contrib/P/rust/src/llvm/include/llvm-c/lto.h:158:54: error: unknown type name 'off_t'
                                     size_t map_size, off_t offset);
                                                      ^
/usr/bin/rm: cannot lstat `/d/Heather/Contrib/P/rust/i686-pc-mingw32/llvm/tools/llvm-c-test/Release+
Asserts/include-all.d.tmp': No such file or directory
make[3]: *** [/d/Heather/Contrib/P/rust/i686-pc-mingw32/llvm/tools/llvm-c-test/Release+Asserts/inclu
de-all.o] Error 1
make[3]: Leaving directory `/d/Heather/Contrib/P/rust/i686-pc-mingw32/llvm/tools/llvm-c-test'
make[2]: *** [llvm-c-test/.makeall] Error 2
make[2]: Leaving directory `/d/Heather/Contrib/P/rust/i686-pc-mingw32/llvm/tools'
make[1]: *** [all] Error 1
make[1]: Leaving directory `/d/Heather/Contrib/P/rust/i686-pc-mingw32/llvm'
make: *** [/d/Heather/Contrib/P/rust/i686-pc-mingw32/llvm/Release+Asserts/bin/llvm-config.exe] Error
 2

[cnd]

Today error :

cp: i686-pc-mingw32/stage2/bin/rustrt.lib
cp: i686-pc-mingw32/stage2/bin/std.dll
warning: removing previous 'std-*.dll' libraries: i686-pc-mingw32/stage2/bin//std-6425b930ca146ae9-0
.9-pre.dll
warning: removing previous 'libstd-*.rlib' libraries: i686-pc-mingw32/stage2/bin//libstd-6425b930ca1
46ae9-0.9-pre.rlib
cp: cannot stat `i686-pc-mingw32/stage1/bin/rustc/i686-pc-mingw32/bin/libstd-6425b930ca146ae9-0.9-pr
e.rlib': No such file or directory
make: *** [i686-pc-mingw32/stage2/bin/std.dll] Error 1

[klutzy]

I've heard the off_t error from IRC: lto.h misses #include <sys/types.h>, but invoking make again seems to work well.

[cnd]

Yes I just successfully build it today, thanks

[klutzy]

@Heather I think the first off_t error is significant and should be fixed (no need to re-make). Could you reopen it?

[cnd]

@klutzy wait... but it's building without errors for me now...

Do you mean it's working only because I run build second time?

[klutzy]

@Heather llvm build is triggered only if you haven't built it before or llvm has been upgraded.
So I guess llvm fails to complete, but it anyway succeeded to make some binary we use.

[cnd]

@klutzy I will try to reproduce with clean build

[cnd]

Right, it's still being failing if I build it first time ( or even if I remove i686-... (build) folder ) with the same error.

[klutzy]

@Heather What version of mingw/gcc did you use? grep VERSION /mingw/include/_mingw.h would show __MINGW32_VERSION and/or __MINGW_VERSION. (If both values exist, trust the second one.)

[cnd]

>gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=d:/mingw/bin/../libexec/gcc/mingw32/4.8.1/lto-wrapper.exe
Target: mingw32
Configured with: ../gcc-4.8.1/configure --prefix=/mingw --host=mingw32 --build=mingw32 --without-pic --enable-shared --enable-static --with-gnu-ld --e
nable-lto --enable-libssp --disable-multilib --enable-languages=c,c++,fortran,objc,obj-c++,ada --disable-sjlj-exceptions --with-dwarf2 --disable-win32
-registry --enable-libstdcxx-debug --enable-version-specific-runtime-libs --with-gmp=/usr/src/pkg/gmp-5.1.2-1-mingw32-src/bld --with-mpc=/usr/src/pkg/
mpc-1.0.1-1-mingw32-src/bld --with-mpfr= --with-system-zlib --with-gnu-as --enable-decimal-float=yes --enable-libgomp --enable-threads --with-libiconv
-prefix=/mingw32 --with-libintl-prefix=/mingw --disable-bootstrap LDFLAGS=-s CFLAGS=-D_USE_32BIT_TIME_T
Thread model: win32
gcc version 4.8.1 (GCC)

[klutzy]

I also reproduced the error on mingw 4.0 / gcc 4.8.1.

[ameyp]

I'm having the same issue:

$ grep VERSION /mingw/include/_mingw.h
#define __MINGW_VERSION             4.0
#define __MINGW32_VERSION           3.20

$ gcc --version
gcc.exe (GCC) 4.8.1

[Kelet]

I'm also having this issue. Same version information as @ameyp.

[rwtaber]

I am also getting the error. Same versions as ameyp. Any more info on this?

[vadimcn]

According to this thread, this error happens because this particular binary (llvm-c-test) is compiled with -std=c99 flag. Apparently 'off_t' is not in ANSI standard, so mingw's <sys/types.h> specifically omits it when __STRICT_ANSI__ is defined.