Re: [HACKERS] mingw configure failure workaround

Andrew Dunstan wrote:
> A lot of reading and some experimentation showed that putting this in
> configure.in:
>
> AC_OUTPUT_COMMANDS([
>   for linktarget in src/backend/port/dynloader.c
> src/backend/port/pg_sema.c src/backend/port/pg_shmem.c
> src/include/dynloader.h src/include/pg_config_os.h src/Makefile.port ; do
>     test -e $linktarget || echo " ***" link for $linktarget failed -
> please fix by hand
>   done
> ])
>
>
> yielded results looking like this:
>
> config.status: executing default-1 commands
>  *** link for src/backend/port/pg_shmem.c failed - please fix by hand
>  *** link for src/include/dynloader.h failed - please fix by hand

Change made and applied:

    case $host_os in mingw*)
    AC_OUTPUT_COMMANDS([
    # Links sometimes fail undetected on Mingw -
    # so here we detect it and warn the user
    for FILE in "$CONFIG_LINKS"
     do
            # test -e works for symlinks in the MinGW console
            # We can't call AC_MSG_WARN from here, so we expand it
            test -e `expr "$FILE" : '\(^:*\)'` || { echo "$as_me:$LINENO:
    WARNING: *** link for $FILE - please fix by hand" >&5
    echo "$as_me: WARNING: *** link for $FILE - please fix by hand" >&2;}
     done
    ])
            ;;
    esac

The macro only runs on MinGW, of course.

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