Description of problem: Link Time Optimization was enabled in Fedora 33 Rawhide and it causes lot of linker warnings via ghc(-8.8.4) for unregisterised s390x: + CFLAGS='-O2 -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -march=zEC12 -mtune=z13 -fasynchronous-unwind-tables -fstack-clash-protection' + export CFLAGS + export 'LDFLAGS=-Wl,-z,relro -Wl,--as-needed ' + LDFLAGS='-Wl,-z,relro -Wl,--as-needed ' + '[' -f Setup.hs -o -f Setup.lhs ']' + '[' -x Setup ']' + ghc --make -package Cabal -no-user-package-db -dynamic Setup [1 of 1] Compiling Main ( Setup.hs, Setup.o ) Linking Setup ... + LANG=C.utf8 + ./Setup --version Cabal library version 3.0.1.0 + '[' -x Setup ']' + LANG=C.utf8 ++ echo ' -O2' -flto=auto -ffat-lto-objects -fexceptions -g -grecord-gcc-switches -pipe -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -march=zEC12 -mtune=z13 -fasynchronous-unwind-tables -fstack-clash-protection ++ sed -e 's/ / -optc/g' ++ echo ' -Wl,-z,relro' -Wl,--as-needed ++ sed -e 's/ / -optl/g' + ./Setup configure --prefix=/usr --libdir=/usr/lib64 --docdir=/usr/share/licenses/ghc-cryptonite '--libsubdir=$compiler/$pkgid' '--datasubdir=$pkgid' '--libexecsubdir=$pkgid' --ghc --dynlibdir=/usr/lib64 --global '--ghc-options= -optc-O2 -optc-flto=auto -optc-ffat-lto-objects -optc-fexceptions -optc-g -optc-grecord-gcc-switches -optc-pipe -optc-Wp,-D_FORTIFY_SOURCE=2 -optc-Wp,-D_GLIBCXX_ASSERTIONS -optc-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -optc-fstack-protector-strong -optc-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -optc-m64 -optc-march=zEC12 -optc-mtune=z13 -optc-fasynchronous-unwind-tables -optc-fstack-clash-protection -optl-Wl,-z,relro -optl-Wl,--as-needed' -p --enable-shared --htmldir=/usr/share/doc/ghc/html/libraries/cryptonite-0.26 --global Configuring cryptonite-0.26... + '[' -x Setup ']' + LANG=C.utf8 + ./Setup build Preprocessing library for cryptonite-0.26.. Building library for cryptonite-0.26.. : : [131 of 131] Compiling Crypto.Tutorial ( Crypto/Tutorial.hs, dist/build/Crypto/Tutorial.o ) [ 1 of 131] Compiling Crypto.Cipher.DES.Primitive ( Crypto/Cipher/DES/Primitive.hs, dist/build/Crypto/Cipher/DES/Primitive.p_o ) /usr/bin/ld.gold: warning: incremental linking of LTO and non-LTO objects; using -flinker-output=nolto-rel which will bypass whole program optimization /tmp/ghc794663_0/ghc_19.c:11:19: error: warning: type of ‘cryptonitezm0zi26zmIKFu0XykBrR53imeIPM2Uw_CryptoziCipherziDESziPrimitive_CAFs_cc’ does not match original declaration [-Wlto-type-mismatch] 11 | extern CostCentre cryptonitezm0zi26zmIKFu0XykBrR53imeIPM2Uw_CryptoziCipherziDESziPrimitive_CAFs_cc[]; | ^ | 11 | extern CostCentre cryptonitezm0zi26zmIKFu0XykBrR53imeIPM2Uw_CryptoziCipherziDESziPrimitive_CAFs_cc[]; | ^ /tmp/ghc794663_0/ghc_18.hc:44:9: error: note: type ‘StgWord’ should match type ‘struct CostCentre’ 44 | StgWord cryptonitezm0zi26zmIKFu0XykBrR53imeIPM2Uw_CryptoziCipherziDESziPrimitive_CAFs_cc[]__attribute__((aligned(8)))= { | ^ | 44 | StgWord cryptonitezm0zi26zmIKFu0XykBrR53imeIPM2Uw_CryptoziCipherziDESziPrimitive_CAFs_cc[]__attribute__((aligned(8)))= { | ^ /tmp/ghc794663_0/ghc_18.hc:44:9: error: note: ‘cryptonitezm0zi26zmIKFu0XykBrR53imeIPM2Uw_CryptoziCipherziDESziPrimitive_CAFs_cc’ was previously declared here | 44 | StgWord cryptonitezm0zi26zmIKFu0XykBrR53imeIPM2Uw_CryptoziCipherziDESziPrimitive_CAFs_cc[]__attribute__((aligned(8)))= { | ^ /tmp/ghc794663_0/ghc_18.hc:44:9: error: note: code may be misoptimized unless ‘-fno-strict-aliasing’ is used | 44 | StgWord cryptonitezm0zi26zmIKFu0XykBrR53imeIPM2Uw_CryptoziCipherziDESziPrimitive_CAFs_cc[]__attribute__((aligned(8)))= { | ^ /tmp/ghc794663_0/ghc_19.c:12:24: error: warning: type of ‘cryptonitezm0zi26zmIKFu0XykBrR53imeIPM2Uw_CryptoziCipherziDESziPrimitive_CAFs_cc_ccs’ does not match original declaration [-Wlto-type-mismatch] 12 | extern CostCentreStack cryptonitezm0zi26zmIKFu0XykBrR53imeIPM2Uw_CryptoziCipherziDESziPrimitive_CAFs_cc_ccs[]; | ^ | 12 | extern CostCentreStack cryptonitezm0zi26zmIKFu0XykBrR53imeIPM2Uw_CryptoziCipherziDESziPrimitive_CAFs_cc_ccs[]; | ^ /tmp/ghc794663_0/ghc_18.hc:50:9: error: note: type ‘StgWord’ should match type ‘struct CostCentreStack’ 50 | StgWord cryptonitezm0zi26zmIKFu0XykBrR53imeIPM2Uw_CryptoziCipherziDESziPrimitive_CAFs_cc_ccs[]__attribute__((aligned(8)))= { | ^ : : /usr/include/bits/string_fortified.h:59:1: error: error: inlining failed in call to ‘always_inline’ ‘memset’: function body can be overwritten at link time 59 | __NTH (memset (void *__dest, int __ch, size_t __len)) | ^ | 59 | __NTH (memset (void *__dest, int __ch, size_t __len)) | ^ /usr/include/bits/string_fortified.h:71:10: error: note: called from here 71 | return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest)); | ^ | 71 | return __builtin___memset_chk (__dest, __ch, __len, __bos0 (__dest)); | ^ lto-wrapper: fatal error: /usr/bin/gcc returned 1 exit status compilation terminated. /usr/bin/ld.gold: fatal error: lto-wrapper failed collect2: error: ld returned 1 exit status `gcc' failed in phase `Linker'. (Exit code: 1) error: Bad exit status from /var/tmp/rpm-tmp.eeilOC (%build) Version-Release number of selected component (if applicable): ghc-compiler-8.8.4-107.fc33.s390x gcc-10.2.1-1.fc33.s390x annobin-9.27-1.fc33.s390x binutils-2.35-10.fc33.s390x How reproducible: 100% Steps to Reproduce: 1. build Haskell package for F33 on s390x Actual results: Additionally this caused ghc-cryptonite-0.26-3.fc33 and ghc-haskell-src-exts-1.23.1-3.fc33 to fail: https://koji.fedoraproject.org/koji/taskinfo?taskID=48408236 https://koji.fedoraproject.org/koji/taskinfo?taskID=48322376 Expected results: No problems Additional info: For now I will disable lto for s390x in ghc-rpm-macros. When we move to ghc-8.10 we can switch s390x from gcc to the llvm backend I hope then this problem should go away.
Actually I am seeing warnings also for x86_64 for example (from a local rpmbuild of rpmbuild-order): /usr/bin/ld.gold: warning: incremental linking of LTO and non-LTO objects; using -flinker-output=nolto-rel which will bypass whole program optimization
This bug appears to have been reported against 'rawhide' during the Fedora 33 development cycle. Changing version to 33.
I think this might be fixed in ghc-rpm-macros-2.3.14 (in F36+)
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