* Warning: conditional outside an IT block for Thumb. @ 2022-08-25 6:40 Mathieu Malaterre 2022-08-25 10:28 ` Richard Earnshaw 0 siblings, 1 reply; 5+ messages in thread From: Mathieu Malaterre @ 2022-08-25 6:40 UTC (permalink / raw) To: gcc-help Hi all, I am seeing a flood of warnings when compiling openvdb+tbb on Debian/armel: [...] [ 2%] Building CXX object openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Archive.cc.o cd /<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb && /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS -Dopenvdb_shared_EXPORTS -I/<<PK GBUILDDIR>>/openvdb/openvdb/.. -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb -I/<<PKGBUILDDIR>>/openvdb/openvdb/. -I/usr/include/Imat h -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time -D_FORTIFY _SOURCE=2 -fPIC -std=c++17 -MD -MT openvdb/openvdb/CMakeFiles/openvdb_shared.dir/Grid.cc.o -MF CMakeFiles/openvdb_shared.dir/Grid.cc.o.d -o CMakeFiles/openvdb_shared.dir/Grid.cc.o -c /<<PKGBUILDDIR>>/openvdb/o penvdb/Grid.cc cd /<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb && /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS -Dopenvdb_shared_EXPORTS -I/<<PK GBUILDDIR>>/openvdb/openvdb/.. -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb -I/<<PKGBUILDDIR>>/openvdb/openvdb/. -I/usr/include/Imat h -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time -D_FORTIFY _SOURCE=2 -fPIC -std=c++17 -MD -MT openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Archive.cc.o -MF CMakeFiles/openvdb_shared.dir/io/Archive.cc.o.d -o CMakeFiles/openvdb_shared.dir/io/Archive.cc.o -c /<<PKGBU ILDDIR>>/openvdb/openvdb/io/Archive.cc /tmp/ccFlliCl.s: Assembler messages: /tmp/ccFlliCl.s:294: Warning: conditional outside an IT block for Thumb. /tmp/ccFlliCl.s:338: Warning: conditional outside an IT block for Thumb. [...] There are so many warnings that it eventually times out the compilation. I could not find a way to tell gcc not to print a warning. Is there a way to remove this warning ? For reference the very large log: * https://buildd.debian.org/status/fetch.php?pkg=openvdb&arch=armel&ver=9.1.0-4&stamp=1661358853&raw=0 Thanks much, -- Mathieu ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Warning: conditional outside an IT block for Thumb. 2022-08-25 6:40 Warning: conditional outside an IT block for Thumb Mathieu Malaterre @ 2022-08-25 10:28 ` Richard Earnshaw 2022-08-25 13:48 ` Mathieu Malaterre 0 siblings, 1 reply; 5+ messages in thread From: Richard Earnshaw @ 2022-08-25 10:28 UTC (permalink / raw) To: Mathieu Malaterre, gcc-help On 25/08/2022 07:40, Mathieu Malaterre via Gcc-help wrote: > Hi all, > > I am seeing a flood of warnings when compiling openvdb+tbb on Debian/armel: > > [...] > [ 2%] Building CXX object > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Archive.cc.o > cd /<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb && > /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK > -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS > -Dopenvdb_shared_EXPORTS -I/<<PK > GBUILDDIR>>/openvdb/openvdb/.. > -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb > -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb > -I/<<PKGBUILDDIR>>/openvdb/openvdb/. -I/usr/include/Imat > h -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong > -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden > -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time > -D_FORTIFY > _SOURCE=2 -fPIC -std=c++17 -MD -MT > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/Grid.cc.o -MF > CMakeFiles/openvdb_shared.dir/Grid.cc.o.d -o > CMakeFiles/openvdb_shared.dir/Grid.cc.o -c /<<PKGBUILDDIR>>/openvdb/o > penvdb/Grid.cc > cd /<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb && > /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK > -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS > -Dopenvdb_shared_EXPORTS -I/<<PK > GBUILDDIR>>/openvdb/openvdb/.. > -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb > -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb > -I/<<PKGBUILDDIR>>/openvdb/openvdb/. -I/usr/include/Imat > h -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong > -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden > -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time > -D_FORTIFY > _SOURCE=2 -fPIC -std=c++17 -MD -MT > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Archive.cc.o -MF > CMakeFiles/openvdb_shared.dir/io/Archive.cc.o.d -o > CMakeFiles/openvdb_shared.dir/io/Archive.cc.o -c /<<PKGBU > ILDDIR>>/openvdb/openvdb/io/Archive.cc > /tmp/ccFlliCl.s: Assembler messages: > /tmp/ccFlliCl.s:294: Warning: conditional outside an IT block for Thumb. > /tmp/ccFlliCl.s:338: Warning: conditional outside an IT block for Thumb. > [...] > > There are so many warnings that it eventually times out the compilation. > > I could not find a way to tell gcc not to print a warning. Is there a > way to remove this warning ? The warning is coming from the assembler. But I don't think it should be just 'ignored'. You'll need to track down why it's happening at all. The most likely case is that there is some inlined assembly code somewhere that was written on the assumption that the compiler would be targeting the A32 state rather than the T32 state (thumb), but there's not enough information here to work out what's happened for sure. What we need is a snippet of the assembler output when compiled with debugging information, so that we can track back to the source code that is generating this. > > For reference the very large log: > > * https://buildd.debian.org/status/fetch.php?pkg=openvdb&arch=armel&ver=9.1.0-4&stamp=1661358853&raw=0 > > Thanks much, The log isn't much help, it's the contents of the file that's being assembled that will tell us what we need to know. R. ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Warning: conditional outside an IT block for Thumb. 2022-08-25 10:28 ` Richard Earnshaw @ 2022-08-25 13:48 ` Mathieu Malaterre 2022-08-25 13:58 ` Mathieu Malaterre 0 siblings, 1 reply; 5+ messages in thread From: Mathieu Malaterre @ 2022-08-25 13:48 UTC (permalink / raw) To: Richard Earnshaw; +Cc: gcc-help Hi Richard, Thanks for the kind help. On Thu, Aug 25, 2022 at 12:28 PM Richard Earnshaw <Richard.Earnshaw@foss.arm.com> wrote: > > > > On 25/08/2022 07:40, Mathieu Malaterre via Gcc-help wrote: > > Hi all, > > > > I am seeing a flood of warnings when compiling openvdb+tbb on Debian/armel: > > > > [...] > > [ 2%] Building CXX object > > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Archive.cc.o > > cd /<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb && > > /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK > > -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS > > -Dopenvdb_shared_EXPORTS -I/<<PK > > GBUILDDIR>>/openvdb/openvdb/.. > > -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb > > -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb > > -I/<<PKGBUILDDIR>>/openvdb/openvdb/. -I/usr/include/Imat > > h -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong > > -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden > > -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time > > -D_FORTIFY > > _SOURCE=2 -fPIC -std=c++17 -MD -MT > > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/Grid.cc.o -MF > > CMakeFiles/openvdb_shared.dir/Grid.cc.o.d -o > > CMakeFiles/openvdb_shared.dir/Grid.cc.o -c /<<PKGBUILDDIR>>/openvdb/o > > penvdb/Grid.cc > > cd /<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb && > > /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK > > -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS > > -Dopenvdb_shared_EXPORTS -I/<<PK > > GBUILDDIR>>/openvdb/openvdb/.. > > -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb > > -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb > > -I/<<PKGBUILDDIR>>/openvdb/openvdb/. -I/usr/include/Imat > > h -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong > > -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden > > -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time > > -D_FORTIFY > > _SOURCE=2 -fPIC -std=c++17 -MD -MT > > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Archive.cc.o -MF > > CMakeFiles/openvdb_shared.dir/io/Archive.cc.o.d -o > > CMakeFiles/openvdb_shared.dir/io/Archive.cc.o -c /<<PKGBU > > ILDDIR>>/openvdb/openvdb/io/Archive.cc > > /tmp/ccFlliCl.s: Assembler messages: > > /tmp/ccFlliCl.s:294: Warning: conditional outside an IT block for Thumb. > > /tmp/ccFlliCl.s:338: Warning: conditional outside an IT block for Thumb. > > [...] > > > > There are so many warnings that it eventually times out the compilation. > > > > I could not find a way to tell gcc not to print a warning. Is there a > > way to remove this warning ? > > The warning is coming from the assembler. But I don't think it should > be just 'ignored'. You'll need to track down why it's happening at all. > The most likely case is that there is some inlined assembly code > somewhere that was written on the assumption that the compiler would be > targeting the A32 state rather than the T32 state (thumb), but there's > not enough information here to work out what's happened for sure. > > What we need is a snippet of the assembler output when compiled with > debugging information, so that we can track back to the source code that > is generating this. > > > > > For reference the very large log: > > > > * https://buildd.debian.org/status/fetch.php?pkg=openvdb&arch=armel&ver=9.1.0-4&stamp=1661358853&raw=0 > > > > Thanks much, > > The log isn't much help, it's the contents of the file that's being > assembled that will tell us what we need to know. I did add '-save-temps' to one TU compilation: % cd /home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb && /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS -Dopenvdb_shared_EXPORTS -I/home/malat/openvdb-9.1.0/openvdb/openvdb/.. -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb -I/home/malat/openvdb-9.1.0/openvdb/openvdb/. -I/usr/include/Imath -g -O2 -ffile-prefix-map=/home/malat/openvdb-9.1.0=. -fstack-protector-strong -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -std=c++17 -MD -MT openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -MF CMakeFiles/openvdb_shared.dir/io/Compression.cc.o.d -o CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -save-temps -c /home/malat/openvdb-9.1.0/openvdb/openvdb/io/Compression.cc Output is: % cd /home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb && /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS -Dopenvdb_shared_EXPORTS -I/home/malat/openvdb-9.1.0/openvdb/openvdb/.. -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb -I/home/malat/openvdb-9.1.0/openvdb/openvdb/. -I/usr/include/Imath -g -O2 -ffile-prefix-map=/home/malat/openvdb-9.1.0=. -fstack-protector-strong -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -std=c++17 -MD -MT openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -MF CMakeFiles/openvdb_shared.dir/io/Compression.cc.o.d -o CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -save-temps -c /home/malat/openvdb-9.1.0/openvdb/openvdb/io/Compression.cc CMakeFiles/openvdb_shared.dir/io/Compression.cc.s: Assembler messages: CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:146: Warning: conditional outside an IT block for Thumb. CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:162: Warning: conditional outside an IT block for Thumb. CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:215: Warning: conditional outside an IT block for Thumb. CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:330: Warning: conditional outside an IT block for Thumb. CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:344: Warning: conditional outside an IT block for Thumb. CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:352: Warning: conditional outside an IT block for Thumb. CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:598: Warning: conditional outside an IT block for Thumb. CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:768: Warning: conditional outside an IT block for Thumb. CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:934: Warning: conditional outside an IT block for Thumb. [truncated] My gcc version is: % /usr/bin/c++ -v Using built-in specs. COLLECT_GCC=/usr/bin/c++ COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabi/12/lto-wrapper Target: arm-linux-gnueabi Configured with: ../src/configure -v --with-pkgversion='Debian 12.2.0-1' --with-bugurl=file:///usr/share/doc/gcc-12/README.Bugs --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2 --prefix=/usr --with-gcc-major-version-only --program-suffix=-12 --program-prefix=arm-linux-gnueabi- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-libitm --disable-libquadmath --disable-libquadmath-support --enable-plugin --enable-default-pie --with-system-zlib --enable-libphobos-checking=release --with-target-system-zlib=auto --enable-objc-gc=auto --enable-multiarch --disable-sjlj-exceptions --with-arch=armv5te --with-float=soft --disable-werror --enable-checking=release --build=arm-linux-gnueabi --host=arm-linux-gnueabi --target=arm-linux-gnueabi Thread model: posix Supported LTO compression algorithms: zlib zstd gcc version 12.2.0 (Debian 12.2.0-1) *.ii file: https://people.debian.org/~malat/openvdb/Compression.cc.ii.xz Once again thanks again for your time, -- Mathieu ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Warning: conditional outside an IT block for Thumb. 2022-08-25 13:48 ` Mathieu Malaterre @ 2022-08-25 13:58 ` Mathieu Malaterre 2022-08-25 14:09 ` Richard Earnshaw 0 siblings, 1 reply; 5+ messages in thread From: Mathieu Malaterre @ 2022-08-25 13:58 UTC (permalink / raw) To: Richard Earnshaw; +Cc: gcc-help On Thu, Aug 25, 2022 at 3:48 PM Mathieu Malaterre <mathieu.malaterre@gmail.com> wrote: > > Hi Richard, > > Thanks for the kind help. > > On Thu, Aug 25, 2022 at 12:28 PM Richard Earnshaw > <Richard.Earnshaw@foss.arm.com> wrote: > > > > > > > > On 25/08/2022 07:40, Mathieu Malaterre via Gcc-help wrote: > > > Hi all, > > > > > > I am seeing a flood of warnings when compiling openvdb+tbb on Debian/armel: > > > > > > [...] > > > [ 2%] Building CXX object > > > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Archive.cc.o > > > cd /<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb && > > > /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK > > > -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS > > > -Dopenvdb_shared_EXPORTS -I/<<PK > > > GBUILDDIR>>/openvdb/openvdb/.. > > > -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb > > > -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb > > > -I/<<PKGBUILDDIR>>/openvdb/openvdb/. -I/usr/include/Imat > > > h -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong > > > -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden > > > -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time > > > -D_FORTIFY > > > _SOURCE=2 -fPIC -std=c++17 -MD -MT > > > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/Grid.cc.o -MF > > > CMakeFiles/openvdb_shared.dir/Grid.cc.o.d -o > > > CMakeFiles/openvdb_shared.dir/Grid.cc.o -c /<<PKGBUILDDIR>>/openvdb/o > > > penvdb/Grid.cc > > > cd /<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb && > > > /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK > > > -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS > > > -Dopenvdb_shared_EXPORTS -I/<<PK > > > GBUILDDIR>>/openvdb/openvdb/.. > > > -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb > > > -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb > > > -I/<<PKGBUILDDIR>>/openvdb/openvdb/. -I/usr/include/Imat > > > h -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong > > > -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden > > > -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time > > > -D_FORTIFY > > > _SOURCE=2 -fPIC -std=c++17 -MD -MT > > > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Archive.cc.o -MF > > > CMakeFiles/openvdb_shared.dir/io/Archive.cc.o.d -o > > > CMakeFiles/openvdb_shared.dir/io/Archive.cc.o -c /<<PKGBU > > > ILDDIR>>/openvdb/openvdb/io/Archive.cc > > > /tmp/ccFlliCl.s: Assembler messages: > > > /tmp/ccFlliCl.s:294: Warning: conditional outside an IT block for Thumb. > > > /tmp/ccFlliCl.s:338: Warning: conditional outside an IT block for Thumb. > > > [...] > > > > > > There are so many warnings that it eventually times out the compilation. > > > > > > I could not find a way to tell gcc not to print a warning. Is there a > > > way to remove this warning ? > > > > The warning is coming from the assembler. But I don't think it should > > be just 'ignored'. You'll need to track down why it's happening at all. > > The most likely case is that there is some inlined assembly code > > somewhere that was written on the assumption that the compiler would be > > targeting the A32 state rather than the T32 state (thumb), but there's > > not enough information here to work out what's happened for sure. > > > > What we need is a snippet of the assembler output when compiled with > > debugging information, so that we can track back to the source code that > > is generating this. > > > > > > > > For reference the very large log: > > > > > > * https://buildd.debian.org/status/fetch.php?pkg=openvdb&arch=armel&ver=9.1.0-4&stamp=1661358853&raw=0 > > > > > > Thanks much, > > > > The log isn't much help, it's the contents of the file that's being > > assembled that will tell us what we need to know. > > I did add '-save-temps' to one TU compilation: > > % cd /home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb > && /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK > -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS > -Dopenvdb_shared_EXPORTS > -I/home/malat/openvdb-9.1.0/openvdb/openvdb/.. > -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb > -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb > -I/home/malat/openvdb-9.1.0/openvdb/openvdb/. -I/usr/include/Imath -g > -O2 -ffile-prefix-map=/home/malat/openvdb-9.1.0=. > -fstack-protector-strong -Wformat -Werror=format-security -Wno-psabi > -fvisibility=hidden -fvisibility-inlines-hidden > -Wa,-mimplicit-it=thumb -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC > -std=c++17 -MD -MT > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -MF > CMakeFiles/openvdb_shared.dir/io/Compression.cc.o.d -o > CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -save-temps -c > /home/malat/openvdb-9.1.0/openvdb/openvdb/io/Compression.cc > > Output is: > > % cd /home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb > && /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK > -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS > -Dopenvdb_shared_EXPORTS > -I/home/malat/openvdb-9.1.0/openvdb/openvdb/.. > -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb > -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb > -I/home/malat/openvdb-9.1.0/openvdb/openvdb/. -I/usr/include/Imath -g > -O2 -ffile-prefix-map=/home/malat/openvdb-9.1.0=. > -fstack-protector-strong -Wformat -Werror=format-security -Wno-psabi > -fvisibility=hidden -fvisibility-inlines-hidden > -Wa,-mimplicit-it=thumb -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC > -std=c++17 -MD -MT > openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -MF > CMakeFiles/openvdb_shared.dir/io/Compression.cc.o.d -o > CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -save-temps -c > /home/malat/openvdb-9.1.0/openvdb/openvdb/io/Compression.cc > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s: Assembler messages: > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:146: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:162: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:215: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:330: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:344: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:352: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:598: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:768: Warning: > conditional outside an IT block for Thumb. > CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:934: Warning: > conditional outside an IT block for Thumb. > [truncated] > > My gcc version is: > > % /usr/bin/c++ -v > Using built-in specs. > COLLECT_GCC=/usr/bin/c++ > COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabi/12/lto-wrapper > Target: arm-linux-gnueabi > Configured with: ../src/configure -v --with-pkgversion='Debian > 12.2.0-1' --with-bugurl=file:///usr/share/doc/gcc-12/README.Bugs > --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2 > --prefix=/usr --with-gcc-major-version-only --program-suffix=-12 > --program-prefix=arm-linux-gnueabi- --enable-shared > --enable-linker-build-id --libexecdir=/usr/lib > --without-included-gettext --enable-threads=posix --libdir=/usr/lib > --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug > --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new > --enable-gnu-unique-object --disable-libitm --disable-libquadmath > --disable-libquadmath-support --enable-plugin --enable-default-pie > --with-system-zlib --enable-libphobos-checking=release > --with-target-system-zlib=auto --enable-objc-gc=auto > --enable-multiarch --disable-sjlj-exceptions --with-arch=armv5te > --with-float=soft --disable-werror --enable-checking=release > --build=arm-linux-gnueabi --host=arm-linux-gnueabi > --target=arm-linux-gnueabi > Thread model: posix > Supported LTO compression algorithms: zlib zstd > gcc version 12.2.0 (Debian 12.2.0-1) > > *.ii file: > https://people.debian.org/~malat/openvdb/Compression.cc.ii.xz > > > Once again thanks again for your time, I've removed: -Wa,-mimplicit-it=thumb from compilation line and it seems to be going much better sorry for the noise. This seems to have been a hack for armhf/Debian back in 2002... ^ permalink raw reply [flat|nested] 5+ messages in thread
* Re: Warning: conditional outside an IT block for Thumb. 2022-08-25 13:58 ` Mathieu Malaterre @ 2022-08-25 14:09 ` Richard Earnshaw 0 siblings, 0 replies; 5+ messages in thread From: Richard Earnshaw @ 2022-08-25 14:09 UTC (permalink / raw) To: Mathieu Malaterre; +Cc: gcc-help On 25/08/2022 14:58, Mathieu Malaterre wrote: > On Thu, Aug 25, 2022 at 3:48 PM Mathieu Malaterre > <mathieu.malaterre@gmail.com> wrote: >> >> Hi Richard, >> >> Thanks for the kind help. >> >> On Thu, Aug 25, 2022 at 12:28 PM Richard Earnshaw >> <Richard.Earnshaw@foss.arm.com> wrote: >>> >>> >>> >>> On 25/08/2022 07:40, Mathieu Malaterre via Gcc-help wrote: >>>> Hi all, >>>> >>>> I am seeing a flood of warnings when compiling openvdb+tbb on Debian/armel: >>>> >>>> [...] >>>> [ 2%] Building CXX object >>>> openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Archive.cc.o >>>> cd /<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb && >>>> /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK >>>> -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS >>>> -Dopenvdb_shared_EXPORTS -I/<<PK >>>> GBUILDDIR>>/openvdb/openvdb/.. >>>> -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb >>>> -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb >>>> -I/<<PKGBUILDDIR>>/openvdb/openvdb/. -I/usr/include/Imat >>>> h -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong >>>> -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden >>>> -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time >>>> -D_FORTIFY >>>> _SOURCE=2 -fPIC -std=c++17 -MD -MT >>>> openvdb/openvdb/CMakeFiles/openvdb_shared.dir/Grid.cc.o -MF >>>> CMakeFiles/openvdb_shared.dir/Grid.cc.o.d -o >>>> CMakeFiles/openvdb_shared.dir/Grid.cc.o -c /<<PKGBUILDDIR>>/openvdb/o >>>> penvdb/Grid.cc >>>> cd /<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb && >>>> /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK >>>> -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS >>>> -Dopenvdb_shared_EXPORTS -I/<<PK >>>> GBUILDDIR>>/openvdb/openvdb/.. >>>> -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb >>>> -I/<<PKGBUILDDIR>>/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb >>>> -I/<<PKGBUILDDIR>>/openvdb/openvdb/. -I/usr/include/Imat >>>> h -g -O2 -ffile-prefix-map=/<<PKGBUILDDIR>>=. -fstack-protector-strong >>>> -Wformat -Werror=format-security -Wno-psabi -fvisibility=hidden >>>> -fvisibility-inlines-hidden -Wa,-mimplicit-it=thumb -Wdate-time >>>> -D_FORTIFY >>>> _SOURCE=2 -fPIC -std=c++17 -MD -MT >>>> openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Archive.cc.o -MF >>>> CMakeFiles/openvdb_shared.dir/io/Archive.cc.o.d -o >>>> CMakeFiles/openvdb_shared.dir/io/Archive.cc.o -c /<<PKGBU >>>> ILDDIR>>/openvdb/openvdb/io/Archive.cc >>>> /tmp/ccFlliCl.s: Assembler messages: >>>> /tmp/ccFlliCl.s:294: Warning: conditional outside an IT block for Thumb. >>>> /tmp/ccFlliCl.s:338: Warning: conditional outside an IT block for Thumb. >>>> [...] >>>> >>>> There are so many warnings that it eventually times out the compilation. >>>> >>>> I could not find a way to tell gcc not to print a warning. Is there a >>>> way to remove this warning ? >>> >>> The warning is coming from the assembler. But I don't think it should >>> be just 'ignored'. You'll need to track down why it's happening at all. >>> The most likely case is that there is some inlined assembly code >>> somewhere that was written on the assumption that the compiler would be >>> targeting the A32 state rather than the T32 state (thumb), but there's >>> not enough information here to work out what's happened for sure. >>> >>> What we need is a snippet of the assembler output when compiled with >>> debugging information, so that we can track back to the source code that >>> is generating this. >>> >>>> >>>> For reference the very large log: >>>> >>>> * https://buildd.debian.org/status/fetch.php?pkg=openvdb&arch=armel&ver=9.1.0-4&stamp=1661358853&raw=0 >>>> >>>> Thanks much, >>> >>> The log isn't much help, it's the contents of the file that's being >>> assembled that will tell us what we need to know. >> >> I did add '-save-temps' to one TU compilation: >> >> % cd /home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb >> && /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK >> -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS >> -Dopenvdb_shared_EXPORTS >> -I/home/malat/openvdb-9.1.0/openvdb/openvdb/.. >> -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb >> -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb >> -I/home/malat/openvdb-9.1.0/openvdb/openvdb/. -I/usr/include/Imath -g >> -O2 -ffile-prefix-map=/home/malat/openvdb-9.1.0=. >> -fstack-protector-strong -Wformat -Werror=format-security -Wno-psabi >> -fvisibility=hidden -fvisibility-inlines-hidden >> -Wa,-mimplicit-it=thumb -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC >> -std=c++17 -MD -MT >> openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -MF >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.o.d -o >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -save-temps -c >> /home/malat/openvdb-9.1.0/openvdb/openvdb/io/Compression.cc >> >> Output is: >> >> % cd /home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb >> && /usr/bin/c++ -DBOOST_ALL_NO_LIB -DBOOST_IOSTREAMS_DYN_LINK >> -DOPENVDB_DLL -DOPENVDB_PRIVATE -DOPENVDB_USE_LOG4CPLUS >> -Dopenvdb_shared_EXPORTS >> -I/home/malat/openvdb-9.1.0/openvdb/openvdb/.. >> -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb >> -I/home/malat/openvdb-9.1.0/obj-arm-linux-gnueabi/openvdb/openvdb/openvdb >> -I/home/malat/openvdb-9.1.0/openvdb/openvdb/. -I/usr/include/Imath -g >> -O2 -ffile-prefix-map=/home/malat/openvdb-9.1.0=. >> -fstack-protector-strong -Wformat -Werror=format-security -Wno-psabi >> -fvisibility=hidden -fvisibility-inlines-hidden >> -Wa,-mimplicit-it=thumb -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC >> -std=c++17 -MD -MT >> openvdb/openvdb/CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -MF >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.o.d -o >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.o -save-temps -c >> /home/malat/openvdb-9.1.0/openvdb/openvdb/io/Compression.cc >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.s: Assembler messages: >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:146: Warning: >> conditional outside an IT block for Thumb. >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:162: Warning: >> conditional outside an IT block for Thumb. >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:215: Warning: >> conditional outside an IT block for Thumb. >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:330: Warning: >> conditional outside an IT block for Thumb. >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:344: Warning: >> conditional outside an IT block for Thumb. >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:352: Warning: >> conditional outside an IT block for Thumb. >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:598: Warning: >> conditional outside an IT block for Thumb. >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:768: Warning: >> conditional outside an IT block for Thumb. >> CMakeFiles/openvdb_shared.dir/io/Compression.cc.s:934: Warning: >> conditional outside an IT block for Thumb. >> [truncated] >> >> My gcc version is: >> >> % /usr/bin/c++ -v >> Using built-in specs. >> COLLECT_GCC=/usr/bin/c++ >> COLLECT_LTO_WRAPPER=/usr/lib/gcc/arm-linux-gnueabi/12/lto-wrapper >> Target: arm-linux-gnueabi >> Configured with: ../src/configure -v --with-pkgversion='Debian >> 12.2.0-1' --with-bugurl=file:///usr/share/doc/gcc-12/README.Bugs >> --enable-languages=c,ada,c++,go,d,fortran,objc,obj-c++,m2 >> --prefix=/usr --with-gcc-major-version-only --program-suffix=-12 >> --program-prefix=arm-linux-gnueabi- --enable-shared >> --enable-linker-build-id --libexecdir=/usr/lib >> --without-included-gettext --enable-threads=posix --libdir=/usr/lib >> --enable-nls --enable-clocale=gnu --enable-libstdcxx-debug >> --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new >> --enable-gnu-unique-object --disable-libitm --disable-libquadmath >> --disable-libquadmath-support --enable-plugin --enable-default-pie >> --with-system-zlib --enable-libphobos-checking=release >> --with-target-system-zlib=auto --enable-objc-gc=auto >> --enable-multiarch --disable-sjlj-exceptions --with-arch=armv5te >> --with-float=soft --disable-werror --enable-checking=release >> --build=arm-linux-gnueabi --host=arm-linux-gnueabi >> --target=arm-linux-gnueabi >> Thread model: posix >> Supported LTO compression algorithms: zlib zstd >> gcc version 12.2.0 (Debian 12.2.0-1) >> >> *.ii file: >> https://people.debian.org/~malat/openvdb/Compression.cc.ii.xz >> >> >> Once again thanks again for your time, > > I've removed: > > -Wa,-mimplicit-it=thumb > > from compilation line and it seems to be going much better > > sorry for the noise. This seems to have been a hack for armhf/Debian > back in 2002... Ah, I think Debian/Ubuntu normally use a compiler targetting Thumb code (--with-mode=thumb during configure), but that appears to be missing from your compiler, so you're probably getting Arm code generated. GCC doesn't generate Arm code with the expectation that IT instructions will guard conditional instructions, so yes, you'd get a lot of warnings from the assembler in that case. R. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2022-08-25 14:09 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2022-08-25 6:40 Warning: conditional outside an IT block for Thumb Mathieu Malaterre 2022-08-25 10:28 ` Richard Earnshaw 2022-08-25 13:48 ` Mathieu Malaterre 2022-08-25 13:58 ` Mathieu Malaterre 2022-08-25 14:09 ` Richard Earnshaw
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).