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OBJCOPY(1) FreeBSD General Commands Manual OBJCOPY(1) NAME objcopy - copy and translate object files SYNOPSIS objcopy [-I objformat | -s objformat | --input-target=objformat] [-K symbolname | --keep-symbol=symbolname] [-L symbolname | --localize-symbol=symbolname] [-N symbolname | --strip-symbol=symbolname] [-O objformat | --output-target=objformat] [-R sectionname | --remove-section=sectionname] [-S | --strip-all] [-V | --version] [-W symbolname | --weaken-symbol=symbolname] [-X | --discard-locals] [-d | -g | --strip-debug] [-h | --help] [-j sectionname | --only-section=sectionname] [-p | --preserve-dates] [-w | --wildcard] [-x | --discard-all] [--add-gnu-debuglink=filename] [--add-section sectionname=filename] [--adjust-section-vma section{+|-|=}val | --change-section-address section{+|-|=}val] [--adjust-start=increment | --change-start=increment] [--adjust-vma=increment | --change-addresses=increment] [--adjust-warnings | --change-warnings] [--change-section-lma section{+|-|=}val] [--change-section-vma section{+|-|=}val] [--extract-dwo] [--gap-fill=val] [--globalize-symbol=ar symbolname] [--globalize-symbols=filename] [--localize-hidden] [--localize-symbols=filename] [--no-adjust-warnings | --no-change-warnings] [--only-keep-debug] [--pad-to=address] [--prefix-alloc-sections=string] [--prefix-sections=string] [--prefix-symbols=string] [--rename-section oldname=newname[,flags]] [--set-section-flags sectionname=flags] [--set-start=address] [--srec-forceS3] [--srec-len=val] [--strip-dwo] [--strip-symbols=filename] [--strip-unneeded] infile [outfile] DESCRIPTION The objcopy utility copies the content of the binary object named by argument infile to that named by argument outfile, transforming it according to the command line options specified. If argument outfile is not specified, objcopy will create a temporary file and will subsequently rename it as infile. The objcopy utility supports the following options: -I objformat | -s objformat | --input-target=objformat Specify that the input file named by the argument infile is in the object format specified by the argument objformat. -K symbolname | --keep-symbol=symbolname Copy the symbol named by argument symbolname to the output. -L symbolname | --localize-symbol=symbolname Make the symbol named by argument symbolname local to the output file. -N symbol | --strip-symbol=symbolname Do not copy the symbol named by argument symbolname to the -R sectionname | --remove-section=sectionname Remove any section with name sectionname from the output file. -S | --strip-all Do not copy symbol and relocation information to the target file. -V | --version Print a version identifier and exit. -W symbolname | --weaken-symbol=symbolname Mark the symbol named by argument symbolname as weak in the output. -X | --discard-locals Do not copy compiler generated local symbols to the output. -d | -g | --strip-debug Do not copy debugging information to the target file. -h | --help Display a help message and exit. -j sectionname | --only-section=sectionname Copy only the section named by argument sectionname to the output. -p | --preserve-dates Set the access and modification times of the output file to the same as those of the input. -w | --wildcard Use shell-style patterns to name symbols. The following meta- characters are recognized in patterns: ! If this is the first character of the pattern, invert the sense of the pattern match. * Matches any string of characters in a symbol name. ? Matches zero or one character in a symbol name. [ Mark the start of a character class. \ Remove the special meaning of the next character in the pattern. ] Mark the end of a character class. -x | --discard-all Do not copy non-global symbols to the output. --add-gnu-debuglink=filename Create a .gnu_debuglink section in the output file that references the debug data in filename. --add-section sectionname=filename Add a new section to the output file with name sectionname. The contents of the section are taken from the file named by argument filename. The size of the section will be the number of bytes in file filename. --adjust-section-vma section{+|-|=}val | --change-section-address section{+|-|=}val Depending on the operator specified, increase, decrease or set both the virtual memory address and the load memory address of --adjust-vma=increment | --change-addresses=increment Increase the virtual memory address and the load memory address of all sections by the value specified by the argument increment. --adjust-warnings | --change-warnings Issue a warning if the section specified by the options --change-section-address, --change-section-lma or --change-section-vma does not exist in the input object. This is the default. --change-section-lma section{+|-|=}val Change or set the load memory address of the section named by the argument section. Depending on the operator specified, the value in argument val will be used as an increment, a decrement or as the new value of the load memory address. --change-section-vma section{+|-|=}val Change or set the virtual memory address of the section named by the argument section. Depending on the operator specified, the value in argument val will be used as an increment, a decrement or as the new value of the virtual memory address. --extract-dwo Copy only .dwo debug sections to the output file. --gap-fill=val Fill the gaps between sections with the byte value specified by the argument val. --globalize-symbol=symbolname Make the symbol named by argument symbolname global, so that it is visible outside of the file in which it is defined. --globalize-symbols=filename Make each symbol listed in the file specified by filename global. --localize-hidden Make all hidden symbols local to the output file. This includes symbols with internal visiblity. --localize-symbols=filename Make each symbol listed in the file specified by filename local to the output file. --no-adjust-warnings | --no-change-warnings Do not issue a warning if the section specified by the options --change-section-address, --change-section-lma or --change-section-vma is missing in the input object. --only-keep-debug Copy only debugging information to the output file. --pad-to=address Pad the load memory address of the output object to the value specified by the argument address by increasing the size of the section with the highest load memory address. --prefix-alloc-sections=string Prefix the symbol names of all the symbols with string. --rename-section oldname=newname[,flags] Rename the section named by argument oldname to newname, optionally changing the sections flags to that specified by argument flags. Allowed values for the argument flags are as for option --set-section-flags below. --set-section-flags sectionname=flags Set the flags for the section named by argument sectionname to those specified by argument flags. Argument flags is a comma separated list of the following flag names: alloc The section occupies space in the output file. code The section contains machine instructions. contents This flag is accepted but is ignored. data The section contains writeable data. debug The section holds debugging information. load The section is loadable. noload The section should not be loaded into memory. readonly The section is not writable. rom The section contains ROM'able contents. share This flag is accepted but is ignored. --set-start=address Set the start address of the output ELF object to the value specified by the argument address. --srec-forceS3 Only generate S-records of type "S3". This option is only meaningful when the output target is set to "srec". --srec-len=val Set the maximum length of an S-record line to val. This option is only meaningful when the output target is set to "srec". --strip-dwo Do not copy .dwo debug sections to the output file. --strip-symbols=filename Do not copy any of the symbols specified by filename to the output. --strip-unneeded Do not copy symbols that are not needed for relocation processing. DIAGNOSTICS The objcopy utility exits 0 on success, and >0 if an error occurs. SEE ALSO ar(1), ld(1), mcs(1), strip(1), elf(3), elftc_bfd_find_target(3), ar(5), elf(5) COMPATIBILITY The objcopy utility is expected to be option compatible with GNU objcopy. HISTORY objcopy has been implemented by Kai Wang <kaiwang27@users.sourceforge.net>.