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From: "gjl at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/54854] New: [avr] Deprecate and finally remove the -mshort-calls command line option Date: Mon, 08 Oct 2012 06:51:00 -0000 [thread overview] Message-ID: <bug-54854-4@http.gcc.gnu.org/bugzilla/> (raw) http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54854 Bug #: 54854 Summary: [avr] Deprecate and finally remove the -mshort-calls command line option Classification: Unclassified Product: gcc Version: 4.8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: target AssignedTo: gjl@gcc.gnu.org ReportedBy: gjl@gcc.gnu.org Target: avr -mshort-calls uses RJMP/RCALL regardless of the flash size of the target device. This will lead to a linker error if a JMP/CALL target is out of reach of RJMP/RCALL: file.c:(.text+0x1234): relocation truncated to fit: R_AVR_13_PCREL against symbol `function' defined in in module.o The -mshort-calls option dates back to the times before the linker could relax JMP/CALL to RJMP/RCALL if the jump offset allows this. The above error message is a blocker and hard to understand for users. Instead of -mstort-calls, the compiler can be called with -mrelax or -Wl,--relax to direct the linker to use the shortest possible instruction.
next reply other threads:[~2012-10-08 6:51 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2012-10-08 6:51 gjl at gcc dot gnu.org [this message] 2012-10-08 6:52 ` [Bug target/54854] " gjl at gcc dot gnu.org 2012-10-08 10:14 ` gjl at gcc dot gnu.org 2012-10-08 10:27 ` gjl at gcc dot gnu.org 2012-10-10 21:47 ` gjl at gcc dot gnu.org
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