On 2020-12-17 20:45, Lee via Cygwin wrote:
Would someone please explain why adding "-static" makes
i686-w64-mingw32-gcc fail?
This works (or at least the compiler doesn't complain)
$ i686-w64-mingw32-gcc -o a.exe conftest-pcre.c -lpcreposix -lpcre
This does not work
$ i686-w64-mingw32-gcc -o a.exe -static conftest-pcre.c -lpcreposix -lpcre
/usr/lib/gcc/i686-w64-mingw32/10/../../../../i686-w64-mingw32/bin/ld:
cannot find -lpcreposix
/usr/lib/gcc/i686-w64-mingw32/10/../../../../i686-w64-mingw32/bin/ld:
cannot find -lpcre
collect2: error: ld returned 1 exit status
Why does adding "-static" make it fail?
Because the mingw64-*86*-pcre/2 packages provide only dynamic libraries and
their linkage archives:
usr/i686-w64-mingw32/sys-root/mingw/bin/libpcre-1.dll
usr/i686-w64-mingw32/sys-root/mingw/bin/libpcre16-0.dll
usr/i686-w64-mingw32/sys-root/mingw/bin/libpcre32-0.dll
usr/i686-w64-mingw32/sys-root/mingw/bin/libpcrecpp-0.dll
usr/i686-w64-mingw32/sys-root/mingw/bin/libpcreposix-0.dll
usr/i686-w64-mingw32/sys-root/mingw/lib/libpcre.dll.a
usr/i686-w64-mingw32/sys-root/mingw/lib/libpcre16.dll.a
usr/i686-w64-mingw32/sys-root/mingw/lib/libpcre32.dll.a
usr/i686-w64-mingw32/sys-root/mingw/lib/libpcrecpp.dll.a
usr/i686-w64-mingw32/sys-root/mingw/lib/libpcreposix.dll.a
where others provide both dynamic and static libraries e.g. mingw64-i686-zstd:
usr/i686-w64-mingw32/sys-root/mingw/bin/libzstd-1.dll
usr/i686-w64-mingw32/sys-root/mingw/lib/libzstd.a
usr/i686-w64-mingw32/sys-root/mingw/lib/libzstd.dll.a
possibly where the size of useful library members are reasonably small enough,
and unlikely to need significantly updated, to be statically linked into an
standalone executable or embedded system component, that itself may be regularly
updated, rather than requiring large chunks of a framework to be linked that may
need regular updates.
--
Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada
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