As I've just researched iproute2 started to compile since I had upgraded dev-libs/mpfr from 4.1.1_p1 to 4.2.0, however liblinear and cmake still hang no matter if mpfr compiled with LTO or not.
сб, 7 янв. 2023 г. в 16:10, Some One <[email protected]>: > Dear GMP devs, > > As I reported the same issue to gentoo bugzilla and retried to reproduce > for them with all logs attached, > I've found out that iproute2 magically started to compile OK. > > However, there were other sources whose compilation was broken. > > Another example with all previous flags for GMP: > > 1. git clone https://github.com/cjlin1/liblinear.git > 2. cd liblinear/ && make: > c++ -Wall -Wconversion -O3 -fPIC -c -o newton.o newton.cpp > ... hangs on the first source ... > > Regards > > > > > > > пт, 6 янв. 2023 г. в 17:03, Some One <[email protected]>: > >> Hi, >> >> Let me try to reproduce the whole process with original GMP source: >> >> 1. I've downloaded https://gmplib.org/download/gmp/gmp-6.2.1.tar.xz >> >> 2. Exported my CFLAGS with LTO enabled: >> export COMMON_FLAGS="-O3 -march=native -mcpu=native -pipe -funroll-loops \ >> -fomit-frame-pointer -fforce-addr -ftracer -fno-stack-protector >> -flto" >> export CFLAGS="${COMMON_FLAGS}" >> export CXXFLAGS="${COMMON_FLAGS}" >> >> 3. Configure, make & install GMP with gcc version 12.2.1 20221231: >> ./configure --prefix=/usr/ --libdir=/usr/lib64/ --enable-cxx >> make -j4 >> make install >> >> 4. Cloned iproute2: >> git clone git://git.kernel.org/pub/scm/network/iproute2/iproute2.git >> >> 5. Try to compile iproute2 with hang as follows: >> CC tc_cbq.o >> CC tc_estimator.o >> ... hangs here ... >> >> 6. Commented out the following piece of iproute2 code in >> tc/tc_estimator.c: >> // if (A/(-log(w)) > time_const) >> // break; >> >> 7. Continued to compile iproute2 and compilation went OK >> >> Same error was reproduced with current https://gmplib.org/repo/gmp-6.2/ >> >> Switching off LTO let iproute2 compile OK >> >> Regards! >> >> пт, 6 янв. 2023 г. в 15:00, Torbjörn Granlund <[email protected]>: >> >>> Some One <[email protected]> writes: >>> >>> I've found the problem related to GCC LTO optimization for GMP for ARM >>> aarch64 >>> under QEMU with ARM Neoverse-N1 virt-4.2 (Oracle Cloud) and ARM >>> virt-7.2 >>> (Apple M1) >>> both running the latest Gentoo with gmp-6.2.1-r5 compiled by both >>> gcc version 11.3.1 20221209 and gcc version 12.2.1 20221231. >>> >>> To reproduce: >>> 1. Compile GMP with LTO optimization -- compiles OK >>> 2. Try to compile iproute2-6.1.0 or cmake-3.25.1 -- compilation hangs >>> during the process >>> >>> Disabling LTO optimization for GMP solves the problem. >>> >>> I would not expect any GMP developer to attempt to reproduce this >>> problem. You're using a patched GMP ("-r5") in an environment which >>> would be very close to impossible to reproduce! >>> >>> You need to isolate this problem and only then report it to the package >>> maintainer of the buggy program. >>> >>> -- >>> Torbjörn >>> Please encrypt, key id 0xC8601622 >>> >> _______________________________________________ gmp-bugs mailing list [email protected] https://gmplib.org/mailman/listinfo/gmp-bugs
