Tamar I think your suggestion of adding # Set user-defined locale export LANG=$(locale -uU) worked. No more perl messages. Still having various troubles... Here's the current one (log below). I'm getting lots of ./configure: line 2534: cannot create temp file for here-document: Device or resource busy And finally checking whether the C compiler works... no sed: can't read conftest.c: No such file or directory configure: error: in `/c/code/HEAD': configure: error: C compiler cannot create executables I have environment variables TEMP and TMP set. Oddly, re-running configure gets further - see second log below. All deeply strange. Thanks Simon Log 1: first run of 'sh validate -fast' Creating libraries/array/ghc.mk Creating libraries/base/ghc.mk Creating libraries/binary/ghc.mk Creating libraries/bytestring/ghc.mk Creating libraries/Cabal/Cabal/ghc.mk Creating libraries/containers/ghc.mk Creating libraries/deepseq/ghc.mk Creating libraries/directory/ghc.mk Creating libraries/dph/dph-base/ghc.mk Creating libraries/dph/dph-prim-interface/ghc.mk Creating libraries/dph/dph-prim-seq/ghc.mk Creating libraries/dph/dph-prim-par/ghc.mk Creating libraries/dph/dph-lifted-base/ghc.mk Creating libraries/dph/dph-lifted-boxed/ghc.mk Creating libraries/dph/dph-lifted-copy/ghc.mk Creating libraries/dph/dph-lifted-vseg/ghc.mk Creating libraries/filepath/ghc.mk Creating libraries/ghc-boot/ghc.mk Creating libraries/ghc-boot-th/ghc.mk Creating libraries/ghc-compact/ghc.mk Creating libraries/ghc-prim/ghc.mk Creating libraries/ghci/ghc.mk Creating libraries/haskeline/ghc.mk Creating libraries/hpc/ghc.mk Creating libraries/integer-gmp/ghc.mk Creating libraries/integer-simple/ghc.mk Creating libraries/mtl/ghc.mk Creating libraries/parallel/ghc.mk Creating libraries/parsec/ghc.mk Creating libraries/pretty/ghc.mk Creating libraries/primitive/ghc.mk Creating libraries/process/ghc.mk Creating libraries/random/ghc.mk Creating libraries/stm/ghc.mk Creating libraries/template-haskell/ghc.mk Creating libraries/terminfo/ghc.mk Creating libraries/text/ghc.mk Creating libraries/time/ghc.mk Creating libraries/transformers/ghc.mk Creating libraries/unix/ghc.mk Creating libraries/vector/ghc.mk Creating libraries/Win32/ghc.mk Creating libraries/xhtml/ghc.mk Booting . Booting libraries/base/ Booting libraries/directory/ Booting libraries/ghc-prim/ Booting libraries/integer-gmp/ Booting libraries/process/ Booting libraries/terminfo/ Booting libraries/time/ Booting libraries/unix/ ./configure: line 2534: cannot create temp file for here-document: Device or resource busy checking for gfind... no checking for find... /usr/bin/find checking for sort... /usr/bin/sort checking for GHC version date... inferred 8.5.20180402 checking for GHC Git commit id... inferred 6ae53e4f4af1a156a875e05a2c12efeaa2e7d902 checking for ghc... /c/fp/HP-8.2.2/bin/ghc checking version of ghc... 8.2.2 GHC path canonicalised to: c:/fp/HP-8.2.2/bin/ghc checking build system type... x86_64-pc-mingw64 checking host system type... x86_64-pc-mingw64 checking target system type... x86_64-pc-mingw64 Build platform inferred as: x86_64-unknown-mingw32 Host platform inferred as: x86_64-unknown-mingw32 Target platform inferred as: x86_64-unknown-mingw32 GHC build : x86_64-unknown-mingw32 GHC host : x86_64-unknown-mingw32 GHC target : x86_64-unknown-mingw32 LLVM target: x86_64-unknown-windows checking for path to top of build tree... C:/code/HEAD configure: Checking for Windows toolchain tarballs... configure: Extracting Windows toolchain from archives (may take a while)... configure: In-tree MingW-w64 tree created checking for genlib... no configure: Making in-tree perl tree configure: In-tree perl tree created checking for -windres... no checking for windres... windres checking for -dllwrap... no checking for dllwrap... dllwrap checking for -objdump... C:/code/HEAD/inplace/mingw/bin/objdump.exe ./configure: line 5421: cannot create temp file for here-document: Device or resource busy checking whether the C compiler works... no sed: can't read conftest.c: No such file or directory configure: error: in `/c/code/HEAD': configure: error: C compiler cannot create executables See `config.log' for more details $ Log 2: run of "./configure" $ ./configure ./configure: line 2542: cannot create temp file for here-document: Device or resource busy configure: loading site script /usr/local/etc/config.site checking for gfind... no checking for find... /usr/bin/find checking for sort... /usr/bin/sort checking for GHC version date... inferred 8.5.20180402 checking for GHC Git commit id... inferred 6ae53e4f4af1a156a875e05a2c12efeaa2e7d902 checking for ghc... /c/fp/HP-8.2.2/bin/ghc checking version of ghc... 8.2.2 GHC path canonicalised to: c:/fp/HP-8.2.2/bin/ghc checking build system type... x86_64-w64-mingw32 checking host system type... x86_64-w64-mingw32 checking target system type... x86_64-w64-mingw32 Host platform inferred as: x86_64-unknown-mingw32 Target platform inferred as: x86_64-unknown-mingw32 GHC build : x86_64-unknown-mingw32 GHC host : x86_64-unknown-mingw32 GHC target : x86_64-unknown-mingw32 LLVM target: x86_64-unknown-windows checking for path to top of build tree... C:/code/HEAD configure: Checking for Windows toolchain tarballs... checking for genlib... no checking for -windres... no checking for -dllwrap... no checking for -objdump... C:/code/HEAD/inplace/mingw/bin/objdump.exe checking whether the C compiler works... yes checking for C compiler default output file name... a.exe checking for suffix of executables... .exe checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether C:/code/HEAD/inplace/mingw/bin/gcc.exe accepts -g... ./configure: line 5717: cannot create temp file for here-document: Device or resource busy sed: can't read conftest.c: No such file or directory no checking for C:/code/HEAD/inplace/mingw/bin/gcc.exe option to accept ISO C89... ./configure: line 5793: cannot create temp file for here-document: Device or resource busy sed: can't read conftest.c: No such file or directory sed: can't read conftest.c: No such file or directory sed: can't read conftest.c: No such file or directory sed: can't read conftest.c: No such file or directory sed: can't read conftest.c: No such file or directory sed: can't read conftest.c: No such file or directory sed: can't read conftest.c: No such file or directory unsupported checking how to run the C preprocessor... C:/code/HEAD/inplace/mingw/bin/gcc.exe -E checking for grep that handles long lines and -e... /usr/bin/grep checking for egrep... /usr/bin/grep -E checking for ANSI C header files... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking minix/config.h usability... no checking minix/config.h presence... ./configure: line 1796: cannot create temp file for here-document: Device or resource busy sed: can't read conftest.c: No such file or directory no checking for minix/config.h... no checking whether it is safe to define __EXTENSIONS__... yes checking how to run the C preprocessor... C:/code/HEAD/inplace/mingw/bin/gcc.exe -E checking for C:/code/HEAD/inplace/mingw/bin/gcc.exe option to accept ISO C99... none needed checking for C:/fp/HP-8.2.2/lib/../mingw/bin/gcc.exe option to accept ISO C99... none needed checking for C:/code/HEAD/inplace/mingw/bin/gcc.exe option to accept ISO C99... none needed checking for C:/code/HEAD/inplace/mingw/bin/gcc.exe option to accept ISO C99... none needed checking for -ld... C:/code/HEAD/inplace/mingw/bin/ld.exe checking whether ld is GNU ld... YES checking whether ld understands --build-id... yes checking whether ld understands -no_compact_unwind... yes checking whether ld understands -filelist... no checking for -objdump... (cached) C:/code/HEAD/inplace/mingw/bin/objdump.exe checking for ranlib... C:/code/HEAD/inplace/mingw/bin/ranlib.exe checking for -strip... no checking for libtool... /usr/bin/libtool checking for -clang... no checking for llc-5.0... no checking for llc... no checking for opt-5.0... no checking for opt... no configure: Creating links for in-tree file handling routines. 'utils/lndir/fs.c' => 'utils/fs/fs.c' 'utils/lndir/fs.h' => 'utils/fs/fs.h' 'utils/unlit/fs.c' => 'utils/fs/fs.c' 'utils/unlit/fs.h' => 'utils/fs/fs.h' 'rts/fs.c' => 'utils/fs/fs.c' 'rts/fs.h' => 'utils/fs/fs.h' 'libraries/base/include/fs.h' => 'utils/fs/fs.h' 'libraries/base/cbits/fs.c' => 'utils/fs/fs.c' configure: Routines in place. Packages can now be build normally. checking whether #! works in shell scripts... yes checking version of gcc... 7.2.0 checking whether GCC supports -no-pie... yes checking for extra options to pass gcc when compiling via C... -fwrapv -fno-builtin checking whether C compiler is clang... no checking whether C compiler has an LLVM back end... no checking Setting up CFLAGS, LDFLAGS, IGNORE_LINKER_LD_FLAGS and CPPFLAGS... done checking Setting up CONF_CC_OPTS_STAGE0, CONF_GCC_LINKER_OPTS_STAGE0, CONF_LD_LINKER_OPTS_STAGE0 and CONF_CPP_OPTS_STAGE0... done checking Setting up CONF_CC_OPTS_STAGE1, CONF_GCC_LINKER_OPTS_STAGE1, CONF_LD_LINKER_OPTS_STAGE1 and CONF_CPP_OPTS_STAGE1... done checking Setting up CONF_CC_OPTS_STAGE2, CONF_GCC_LINKER_OPTS_STAGE2, CONF_LD_LINKER_OPTS_STAGE2 and CONF_CPP_OPTS_STAGE2... done checking for .subsections_via_symbols... no checking whether your assembler supports .ident directive... yes checking for GNU non-executable stack support... no checking for a working context diff... diff -U 1 checking for a BSD-compatible install... /usr/bin/install -c checking whether C:/code/HEAD/inplace/mingw/bin/ar.exe is GNU ar... yes checking for ar arguments... q checking whether C:/code/HEAD/inplace/mingw/bin/ar.exe supports @file... yes