Op vr 20 aug. 2021 om 11:54 schreef Richard Biener:
>
>
> The easiest is probably to build them in-tree by means of
> executing ./contrib/download_prerequesites which will download
> and unpack them into your source tree.
>
>
Well, I do have the libraries (source and all) and I copied the built
libraries (that is the content of mpfr/,libs and mpc/.libs to the locations
that are referred to in the link statement, so I assumed that would enable
the linker to find them.
Other than that you are likely either missing some of the requirements
> or lack the appropriate --with-{gmp,mpc,mpfr}[-lib] configury.
>
>
The odd thing is that the link statement as presented in the command window
knows where to find the libraries. Here is the (hopefully) relevant part:
g++ -std=c++11 -no-pie -g -DIN_GCC -fno-exceptions -fno-rtti
-fasynchronous-unwind-tables -W -Wall
(...) ../libcpp/libcpp.a ../libdecnumber/libdecnumber.a
-L/cygdrive/d/gfortran/gcc/build-gcc/./gmp/.libs
-L/cygdrive/d/gfortran/gcc/build-gcc/./mpfr/src/.libs
-L/cygdrive/d/gfortran/gcc/build-gcc/./mpc/src/.libs -lmpc -lmpfr -lgmp
-L./../zlib -lz libcommon.a ../libcpp/libcpp.a -liconv
../libbacktrace/.libs/libbacktrace.a ../libiberty/libiberty.a
../libdecnumber/libdecnumber.a
/usr/lib/gcc/x86_64-pc-cygwin/10/../../../../x86_64-pc-cygwin/bin/ld:
cannot find -lmpc
/usr/lib/gcc/x86_64-pc-cygwin/10/../../../../x86_64-pc-cygwin/bin/ld:
cannot find -lmpc
/usr/lib/gcc/x86_64-pc-cygwin/10/../../../../x86_64-pc-cygwin/bin/ld:
cannot find -lmpfr
/usr/lib/gcc/x86_64-pc-cygwin/10/../../../../x86_64-pc-cygwin/bin/ld:
cannot find -lmpfr
/usr/lib/gcc/x86_64-pc-cygwin/10/../../../../x86_64-pc-cygwin/bin/ld:
cannot find -lmpc
/usr/lib/gcc/x86_64-pc-cygwin/10/../../../../x86_64-pc-cygwin/bin/ld:
cannot find -lmpfr
What host operating system are you using?
>
> Cygwin on Windows 10
Oops, now that I copied the relevant bit of the link command, I see what I
did wrong: the libraries are under mpfr/./libs, not mpfr/src/.libs (and
ditto for mpc).
Okay, trying again!
Thanks for the reply. This ought to do it.
Regards,
Arjen
