strcompact(1) General Commands Manual strcompact(1)NAME
strcompact - string compaction for object files
strcompact [ object_name ... ]
strcompact scans the symbol and string tables of an object file looking for multiple references in the symbol table to the same string.
The string offset of symbol table entries is updated to preserve only one copy of the string.
strcompact cut the size of the kernel string table by about 25%.
The user must have write permission to the object/executable file.
strcompact writes to stderr the number of shared strings found.
strcompact exits 0 if successful, and >0 if an error occurred.
SEE ALSO sort(1), symcompact(1), symorder(1), uniq(1)BUGS
Execution speed leaves much to be desired - on a 11/73 it takes about 4 minutes to process the string table of the kernel. Fortunately
this is only done once when the kernel is created.
Although strcompact may be run on .o files as well as executables but this is probably not worth the trouble since the linker will not cre-
ate shared strings in the final executable.
3rd Berkeley Distribution January 25, 1994 strcompact(1)
Check Out this Related Man Page
ostrip(1) General Commands Manual ostrip(1)NAME
ostrip - Reduce the size of object files
ostrip [options] file...
The following options are supported by the ostrip command: Removes the section of a linked image. Removes unreferenced symbols and unused
type information from the symbol tables of a pre-link file. This results in a smaller on-disk executable file. If files modified with this
option are subsequently linked, ostrip -m should be run on the linked image. Joins together two files that were previously split by the -t
option into a symbol table file (image.stb) and a stripped image file (image). Removes unreferenced symbols and unused type information
for the symbol tables of a post-link executable file. This results in a smaller on-disk executable file. The symbol table still contains
all information required for debugging. Decompresses the output of ostrip. This option is provided for cases in which the input file is
compressed in ALPHAMAGICZ format. Removes the symbol table and any strippable subsections of the section. (Performs the same operations as
the strip command.) Splits an image file (image) into a symbol table file (image.stb) and a stripped image file (image). The symbol table
file will contain a checksum of the stripped image. Displays the version of the ostrip command. Produces a reduced symbol table by remov-
ing local information. Also deletes any locally strippable subsections of the section. (Performs the same operations as the ld -x com-
mand.) Compresses the output of ostrip into ALPHAMAGICZ format.
The ostrip command reduces the components of any object file based on the options that are specified. It is designed to work with any
object file, that is, files, image files, and shared object files. It does not work with (archive) files.
The following command strips the local symbol table and converts the object file into ALPHAMAGICZ format: ostrip -x -Z obj.o The following
command produces the symbol table file osize_mm.stb and the stripped image file osize.mm: ostrip -t osize.mm The following command joins
the symbol table file osize_mm.stb to osize.mm: ostrip -j osize.mm
Commands: strip(1), ld(1), mcs(1), objZ(1)ostrip(1)
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