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deb-symbols(5)			  dpkg suite			deb-symbols(5)

       deb-symbols - Debian's extended shared library information file


       The  symbol files are shipped in	Debian binary packages,	and its	format
       is a subset of the template symbol files	used by	dpkg-gensymbols(1)  in
       Debian source packages.

       The  format for an extended shared library dependency information entry
       in these	files is:

       library-soname main-dependency-template
       [| alternative-dependency-template]
       [* field-name: field-value]
	symbol minimal-version [id-of-dependency-template]

       The library-soname is exactly the value of the SONAME field as exported
       by  objdump(1). A dependency-template is	a dependency where #MINVER# is
       dynamically replaced either by  a  version  check  like	"(>=  minimal-
       version)"  or  by  nothing  (if	an  unversioned	 dependency  is	deemed

       Each exported symbol (listed as name@version, with version being	"Base"
       if  the library is not versioned) is associated to a minimal-version of
       its dependency template (the main dependency template  is  always  used
       and  will end up	being combined with the	dependency template referenced
       by  id-of-dependency-template  if  present).  The   first   alternative
       dependency template is numbered 1, the second one 2, etc.

       Each entry for a	library	can also have some fields of meta-information.
       Those fields are	stored on lines	starting with an asterisk.  Currently,
       the only	valid fields are:

	      It  indicates  the  name of the "-dev" package associated	to the
	      library and is used by dpkg-shlibdeps  to	 make  sure  that  the
	      dependency  generated is at least	as strict as the corresponding
	      build dependency (since dpkg 1.14.13).

	      It indicates what	blacklist  groups  should  be  ignored,	 as  a
	      whitespace  separated  list,  so	that  the symbols contained in
	      those groups  get	 included  in  the  output  file  (since  dpkg
	      1.17.6).	 This  should only be necessary	for toolchain packages
	      providing	those blacklisted symbols. The	available  groups  are
	      system  dependent, for ELF and GNU-based systems these are aeabi
	      and gomp.

   Simple symbols file libftp3 #MINVER#
	DefaultNetbuf@Base 3.1-1-6
	FtpAccess@Base 3.1-1-6

   Advanced symbols file libgl1
       | libgl1-mesa-glx #MINVER#
       * Build-Depends-Package:	libgl1-mesa-dev
	publicGlSymbol@Base 6.3-1
	implementationSpecificSymbol@Base 6.5.2-7 1

       dpkg-shlibdeps(1), dpkg-gensymbols(1).

1.19.7				  2019-06-03			deb-symbols(5)


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