Issue 22126: mc68881 fpcr inline asm breaks clang -flto build (original) (raw)

Issue22126

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This issue has been migrated to GitHub: https://github.com/python/cpython/issues/66324

classification

Title:	mc68881 fpcr inline asm breaks clang -flto build
Type:	compile error	Stage:
Components:	Interpreter Core	Versions:	Python 3.5

process

Status:	closed	Resolution:	duplicate
Dependencies:		Superseder:	Configure script wrongly detects x64/x87/mc68881 with -flto option passed View:24543
Assigned To:		Nosy List:	ivank, schwab
Priority:	normal	Keywords:

Created on 2014-08-03 07:12 by ivank, last changed 2022-04-11 14:58 by admin. This issue is now closed.

Messages (3)
msg224613 - (view)	Author: ivank (ivank)	Date: 2014-08-03 07:12
Build cpython master with clang -flto results in: [...] ar rc libpython3.5m.a Modules/_threadmodule.o Modules/signalmodule.o Modules/posixmodule.o Modules/errnomodule.o Modules/pwdmodule.o Modules/_sre.o Modules/_codecsmodule.o Modules/_weakref.o Modules/_functoolsmodule.o Modules/_operator.o Modules/_collectionsmodule.o Modules/itertoolsmodule.o Modules/atexitmodule.o Modules/_stat.o Modules/_localemodule.o Modules/_iomodule.o Modules/iobase.o Modules/fileio.o Modules/bytesio.o Modules/bufferedio.o Modules/textio.o Modules/stringio.o Modules/zipimport.o Modules/faulthandler.o Modules/_tracemalloc.o Modules/hashtable.o Modules/symtablemodule.o Modules/xxsubtype.o ranlib libpython3.5m.a clang -pthread -flto -B/usr/lib/gold-ld -flto -B/usr/lib/gold-ld -Xlinker -export-dynamic -o python Programs/python.o libpython3.5m.a -lpthread -ldl -lutil -lm clang -pthread -flto -B/usr/lib/gold-ld -flto -B/usr/lib/gold-ld -Xlinker -export-dynamic -o Programs/_testembed Programs/_testembed.o libpython3.5m.a -lpthread -ldl -lutil -lm :1:10: error: invalid register name fmove.l %fpcr,36(%rsp) ^~~~~ LLVM ERROR: Error parsing inline asm clang: error: linker command failed with exit code 1 (use -v to see invocation) make: * [python] Error 1 make: * Waiting for unfinished jobs.... :1:10: error: invalid register name fmove.l %fpcr,36(%rsp) ^~~~~ LLVM ERROR: Error parsing inline asm clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [Programs/_testembed] Error 1 My build script was: #!/bin/bash # Get clang 3.5 from # deb http://llvm.org/apt/trusty/ llvm-toolchain-trusty main # deb-src http://llvm.org/apt/trusty/ llvm-toolchain-trusty main set -e sudo ln -sf /usr/lib/llvm-3.5/lib/LLVMgold.so /usr/lib/LLVMgold.so sudo mkdir -p /usr/lib/bfd-plugins sudo ln -sf /usr/lib/llvm-3.5/lib/LLVMgold.so /usr/lib/bfd-plugins/LLVMgold.so grep -Fxq /usr/lib/llvm-3.5/lib /etc/ld.so.conf \|	(echo "/usr/lib/llvm-3.5/lib should be in /etc/ld.so.conf" && false) sudo ldconfig export CC=clang export CXX=clang++ export CFLAGS="-O3 -flto -B/usr/lib/gold-ld -fomit-frame-pointer" export CXXFLAGS="-O3 -flto -B/usr/lib/gold-ld -fomit-frame-pointer" export LDFLAGS="-flto -B/usr/lib/gold-ld" make clean
msg224630 - (view)	Author: Stefan Krah (skrah) *	Date: 2014-08-03 12:49
If it works without -flto, isn't that a toolchain rather than a Python issue?
msg224636 - (view)	Author: Andreas Schwab (schwab) *	Date: 2014-08-03 13:29
Why does the configure test succeed?

History
Date	User	Action	Args
2022-04-11 14:58:06	admin	set	github: 66324
2015-07-02 12:22:37	skrah	set	status: open -> closedsuperseder: Configure script wrongly detects x64/x87/mc68881 with -flto option passedresolution: duplicate
2014-10-14 15:43:14	skrah	set	nosy: - skrah
2014-08-03 13:29:08	schwab	set	messages: +
2014-08-03 12:49:52	skrah	set	nosy: + skrah, schwabmessages: +
2014-08-03 07:12:42	ivank	create

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