Build failure at gcc level: blocksort.c not found

[ljedrz]

bzip2-sys seems to refuse to build due to missing blocksort.c (it is indeed not present in the related build directory).

   Compiling bzip2-sys v0.1.6
error: failed to run custom build command for `bzip2-sys v0.1.6`
process didn't exit successfully: `c:\Local\poligon\extract_blobs\target\release\build\bzip2-sys-9937a6f77c12f052\build-script-build` (exit code: 101)
--- stdout
TARGET = Some("x86_64-pc-windows-gnu")
OPT_LEVEL = Some("3")
TARGET = Some("x86_64-pc-windows-gnu")
HOST = Some("x86_64-pc-windows-gnu")
TARGET = Some("x86_64-pc-windows-gnu")
TARGET = Some("x86_64-pc-windows-gnu")
HOST = Some("x86_64-pc-windows-gnu")
CC_x86_64-pc-windows-gnu = Some("C:\\Local\\poligon\\.rustup\\toolchains\\nightly-x86_64-pc-windows-gnu\\lib\\rustlib\\x86_64-pc-windows-gnu\\bin\\gcc.exe")
TARGET = Some("x86_64-pc-windows-gnu")
HOST = Some("x86_64-pc-windows-gnu")
CFLAGS_x86_64-pc-windows-gnu = None
CFLAGS_x86_64_pc_windows_gnu = None
HOST_CFLAGS = None
CFLAGS = None
DEBUG = Some("false")
running: "C:\\Local\\poligon\\.rustup\\toolchains\\nightly-x86_64-pc-windows-gnu\\lib\\rustlib\\x86_64-pc-windows-gnu\\bin\\gcc.exe" "-O3" "-ffunction-sections" "-fdata-sections" "-m64" "-I" "bzip2-1.0.6" "-D_WIN32" "-DBZ_EXPORT" "-DBZ_NO_STDIO" "-o" "c:\\Local\\poligon\\extract_blobs\\target\\release\\build\\bzip2-sys-f19fa19517d295e2\\out\\bzip2-1.0.6\\blocksort.o" "-c" "bzip2-1.0.6/blocksort.c"
cargo:warning=gcc.exe: error: CreateProcess: No such file or directory
exit code: 1

I'm using rustc 1.28.0-nightly-gnu-x64 with Win 7.

[alexcrichton]

Thanks for the report! It looks like gcc.exe doesn't exist though or maybe a dll is missing?

[ljedrz]

GCC is there, it's the one bundled with x86_64-pc-windows-gnu; how can I determine which dll can be missing?

[alexcrichton]

The gcc we ship that's bundled isn't able to compile C files, though, so you'll want to install a local gcc toolchain elsewehre

[ljedrz]

You're right - I once read somewhere (not an official source as far as I remember) that this GCC was supposed to work like the real deal, but I guess that person was wrong. I used the one from my cygwin installation and it worked flawlessly.

Thanks! Case closed

[ljedrz]

I've tried to find that piece of information in order to comment on it, but instead I found lots of other cases where people were surprised that the bundled gcc can't be used for compilation. It might be a good idea to make this more visible, e.g. even by adding a blank file named WARNING - THIS GCC CANNOT BE USED FOR COMPILATION.txt to Windows installations under \rustlib\*\bin (as this location is probably usually found by manual browsing) or by renaming that gcc.exe to something different.

[alexcrichton]

Seems plausible to me!