I tried to emerge opencv with cuda and with lto flag, i got an error related to lto, try to compile without and everything worked fine. i'm using gcc-12.3.1 to compile it since i have latest cuda (12.2.2) installed and it requires gcc-12. Reproducible: Always Steps to Reproduce: USE="lto cuda" emerge opencv Actual Results: lto-wrapper: warning: using serial compilation of 45 LTRANS jobs lto-wrapper: note: see the ‘-flto’ option documentation for more information {standard input}: Assembler messages: {standard input}:352760: Error: symbol `fatbinData' is already defined lto-wrapper: fatal error: /usr/bin/x86_64-pc-linux-gnu-g++ returned 1 exit status compilation terminated. /usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: error: lto-wrapper failed collect2: error: ld returned 1 exit status ninja: build stopped: subcommand failed. * ERROR: media-libs/opencv-4.8.0-r1::gentoo failed (compile phase): * ninja -v -j25 -l0 failed * * Call stack: * ebuild.sh, line 136: Called src_compile * environment, line 5435: Called cmake-multilib_src_compile * environment, line 1342: Called multilib-minimal_src_compile * environment, line 4244: Called multilib_foreach_abi 'multilib-minimal_abi_src_compile' * environment, line 4511: Called multibuild_foreach_variant '_multilib_multibuild_wrapper' 'multilib-minimal_abi_src_compile' * environment, line 4204: Called _multibuild_run '_multilib_multibuild_wrapper' 'multilib-minimal_abi_src_compile' * environment, line 4202: Called _multilib_multibuild_wrapper 'multilib-minimal_abi_src_compile' * environment, line 586: Called multilib-minimal_abi_src_compile * environment, line 4238: Called multilib_src_compile * environment, line 4731: Called cmake_src_compile * environment, line 1460: Called cmake_build * environment, line 1427: Called eninja * environment, line 2058: Called die * The specific snippet of code: * "$@" || die -n "${*} failed" * * If you need support, post the output of `emerge --info '=media-libs/opencv-4.8.0-r1::gentoo'`, * the complete build log and the output of `emerge -pqv '=media-libs/opencv-4.8.0-r1::gentoo'`. !!! When you file a bug report, please include the following information: GENTOO_VM= CLASSPATH="" JAVA_HOME="/etc/java-config-2/current-system-vm" JAVACFLAGS="" COMPILER="" and of course, the output of emerge --info =opencv-4.8.0 * The complete build log is located at '/var/tmp/portage/media-libs/opencv-4.8.0-r1/temp/build.log'. * The ebuild environment file is located at '/var/tmp/portage/media-libs/opencv-4.8.0-r1/temp/environment'. * Working directory: '/var/tmp/portage/media-libs/opencv-4.8.0-r1/work/opencv-4.8.0_build-abi_x86_64.amd64' * S: '/var/tmp/portage/media-libs/opencv-4.8.0-r1/work/opencv-4.8.0' >>> Failed to emerge media-libs/opencv-4.8.0-r1, Log file: >>> '/var/tmp/portage/media-libs/opencv-4.8.0-r1/temp/build.log' * Messages for package media-libs/opencv-4.8.0-r1: * ERROR: media-libs/opencv-4.8.0-r1::gentoo failed (compile phase): * ninja -v -j25 -l0 failed * * Call stack: * ebuild.sh, line 136: Called src_compile * environment, line 5435: Called cmake-multilib_src_compile * environment, line 1342: Called multilib-minimal_src_compile * environment, line 4244: Called multilib_foreach_abi 'multilib-minimal_abi_src_compile' * environment, line 4511: Called multibuild_foreach_variant '_multilib_multibuild_wrapper' 'multilib-minimal_abi_src_compile' * environment, line 4204: Called _multibuild_run '_multilib_multibuild_wrapper' 'multilib-minimal_abi_src_compile' * environment, line 4202: Called _multilib_multibuild_wrapper 'multilib-minimal_abi_src_compile' * environment, line 586: Called multilib-minimal_abi_src_compile * environment, line 4238: Called multilib_src_compile * environment, line 4731: Called cmake_src_compile * environment, line 1460: Called cmake_build * environment, line 1427: Called eninja * environment, line 2058: Called die * The specific snippet of code: * "$@" || die -n "${*} failed" * * If you need support, post the output of `emerge --info '=media-libs/opencv-4.8.0-r1::gentoo'`, * the complete build log and the output of `emerge -pqv '=media-libs/opencv-4.8.0-r1::gentoo'`. * The complete build log is located at '/var/tmp/portage/media-libs/opencv-4.8.0-r1/temp/build.log'. * The ebuild environment file is located at '/var/tmp/portage/media-libs/opencv-4.8.0-r1/temp/environment'. * Working directory: '/var/tmp/portage/media-libs/opencv-4.8.0-r1/work/opencv-4.8.0_build-abi_x86_64.amd64' * S: '/var/tmp/portage/media-libs/opencv-4.8.0-r1/work/opencv-4.8.0' Expected Results: to compile properly with USE="-lto -cuda" it emerges properly both with gcc12 and 13.
Created attachment 870202 [details] emerge --info
with gcc-12 I tried USE="-lto cuda" and it produces the same error: lto-wrapper: warning: using serial compilation of 45 LTRANS jobs lto-wrapper: note: see the ‘-flto’ option documentation for more information {standard input}: Assembler messages: {standard input}:352760: Error: symbol `fatbinData' is already defined lto-wrapper: fatal error: /usr/bin/x86_64-pc-linux-gnu-g++ returned 1 exit status compilation terminated. /usr/lib/gcc/x86_64-pc-linux-gnu/12/../../../../x86_64-pc-linux-gnu/bin/ld: error: lto-wrapper failed collect2: error: ld returned 1 exit status ninja: build stopped: subcommand failed.
you can also see a workaround at the other bug how to compile with lto and still avoid this issue. *** This bug has been marked as a duplicate of bug 811162 ***
