mirror of
https://https.git.savannah.gnu.org/git/libtool.git
synced 2026-01-26 15:39:10 +00:00
New program libtool-next-version.
* libtool-next-version.in: New file, based on gnulib/build-aux/libtool-next-version. * doc/libtool.texi (Updating version info): Add sub-nodes 'Manual version info update', 'Guided version info update', 'Invoking libtool-next-version'. * Makefile.am (BUILT_SOURCES): Add libtool-next-version. (libtoolnextv_in): New variable. (EXTRA_DIST): Add it. (bin_SCRIPTS): Add libtool-next-version. (libtool-next-version): New target. (libtoolnextv_1): New variable. New target. (dist_man1_MANS): Add it.
This commit is contained in:
Bruno Haible
Ileana Dumitrescu
parent
6b306695ea
commit
c41501afc3
2
.gitignore
vendored
2
.gitignore
vendored
@ -43,7 +43,7 @@
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/gnulib-local
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/gnulib-tests
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/libtoolize
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/libtoolize.in
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/libtool-next-version
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/maint.mk
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/patches
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/release
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19
Makefile.am
19
Makefile.am
@ -28,7 +28,7 @@ SUBDIRS = . gnulib-tests
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DIST_SUBDIRS = $(SUBDIRS)
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EXTRA_DIST =
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BUILT_SOURCES = libtool libtoolize
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BUILT_SOURCES = libtool libtoolize libtool-next-version
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CLEANFILES =
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MOSTLYCLEANFILES =
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@ -78,6 +78,7 @@ extract_trace = $(srcdir)/$(aux_dir)/extract-trace
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funclib_sh = $(srcdir)/$(aux_dir)/funclib.sh
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inline_source = $(srcdir)/$(aux_dir)/inline-source
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libtoolize_in = $(srcdir)/libtoolize.in
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libtoolnextv_in = $(srcdir)/libtool-next-version.in
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ltmain_sh = $(srcdir)/$(aux_dir)/ltmain.sh
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ltmain_in = $(srcdir)/$(aux_dir)/ltmain.in
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libtool_m4 = $(srcdir)/$(macro_dir)/libtool.m4
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@ -88,7 +89,8 @@ options_parser = $(srcdir)/$(aux_dir)/options-parser
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u2d_copyright = $(srcdir)/$(aux_dir)/update-copyright
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EXTRA_DIST += $(extract_trace) $(funclib_sh) $(inline_source) \
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$(libtoolize_in) $(ltmain_in) $(ltmain_sh) \
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$(libtoolize_in) $(libtoolnextv_in) \
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$(ltmain_in) $(ltmain_sh) \
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$(ltversion_in) $(ltversion_m4) $(no_bogus_macros) \
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$(options_parser) $(u2d_copyright)
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@ -280,6 +282,8 @@ configure_edit = $(bootstrap_edit) \
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# The libtool distributor and the standalone libtool script.
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bin_SCRIPTS = libtool
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# The "Update version info" wizard.
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bin_SCRIPTS += libtool-next-version
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libtoolize: $(libtoolize_in) $(config_status)
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$(AM_V_at)rm -f '$@'
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@ -287,6 +291,12 @@ libtoolize: $(libtoolize_in) $(config_status)
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$(AM_V_at)chmod a+x '$@'
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$(AM_V_at)chmod a-w '$@'
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libtool-next-version: $(libtoolnextv_in) $(config_status)
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$(AM_V_at)rm -f '$@'
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$(AM_V_GEN)$(bootstrap_edit) '$(libtoolnextv_in)' > '$@'
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$(AM_V_at)chmod a+x '$@'
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$(AM_V_at)chmod a-w '$@'
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# We used to do this with a 'stamp-vcl' file, but non-gmake builds
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# would rerun configure on every invocation, so now we manually
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# check the version numbers from the build rule when necessary.
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@ -383,6 +393,7 @@ doc_dir = $(srcdir)/doc
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libtool_1 = $(doc_dir)/libtool.1
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libtoolize_1 = $(doc_dir)/libtoolize.1
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libtoolnextv_1 = $(doc_dir)/libtool-next-version.1
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notes_texi = $(doc_dir)/notes.texi
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notes_txt = $(doc_dir)/notes.txt
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@ -408,7 +419,7 @@ $(notes_txt): $(notes_texi)
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$(AM_V_GEN)$(MAKEINFO) -P '$(srcdir)/doc' --no-headers \
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$(MAKEINFOFLAGS) -o '$@' '$(notes_texi)'
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dist_man1_MANS = $(libtool_1) $(libtoolize_1)
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dist_man1_MANS = $(libtool_1) $(libtoolize_1) $(libtoolnextv_1)
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MAINTAINERCLEANFILES += $(dist_man1_MANS)
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update_mans = \
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PATH=".$(PATH_SEPARATOR)$$PATH"; export PATH; \
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@ -422,6 +433,8 @@ $(libtool_1): $(ltmain_sh)
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$(AM_V_GEN)$(update_mans) -n 'Provide generalized library-building support services' --help-option=--help-all libtool
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$(libtoolize_1): $(libtoolize_in)
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$(AM_V_GEN)$(update_mans) -n 'Prepare a package to use libtool' libtoolize
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$(libtoolnextv_1): $(libtoolnextv_in)
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$(AM_V_GEN)$(update_mans) -n 'Determines next version to use for a libtool library' libtool-next-version
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113
doc/libtool.texi
113
doc/libtool.texi
@ -40,6 +40,7 @@ the section entitled ``GNU Free Documentation License''.
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@direntry
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* libtool-invocation: (libtool)Invoking libtool. Running the @code{libtool} script.
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* libtoolize: (libtool)Invoking libtoolize. Adding libtool support.
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* libtool-next-version: (libtool)Invoking libtool-next-version. Running the @code{libtool-next-version} wizard.
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@end direntry
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@titlepage
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@ -3158,7 +3159,7 @@ interface number.
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Here are a set of rules to help you update your library version
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information:
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@enumerate 1
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@itemize @bullet
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@item
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Start with version information of @samp{0:0:0} for each libtool library.
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@ -3167,6 +3168,31 @@ Update the version information only immediately before a public release
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of your software. More frequent updates are unnecessary, and only
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guarantee that the current interface number gets larger faster.
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@item
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Do the update either manually, or guided by the @samp{libtool-next-version}
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wizard.
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@end itemize
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@strong{@emph{Never}} try to set the interface numbers so that they
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correspond to the release number of your package. This is an abuse that
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only fosters misunderstanding of the purpose of library versions.
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Instead, use the @option{-release} flag (@pxref{Release numbers}), but be
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warned that every release of your package will not be binary compatible
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with any other release.
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@menu
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* Manual version info update:: Updating version info manually.
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* Guided version info update:: Using the libtool-next-version program.
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* Invoking libtool-next-version:: @code{libtool-next-version} command line options.
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@end menu
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@node Manual version info update
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@subsection Updating the version info manually
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Here are the steps that you need to do, to update your library version
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information:
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@enumerate 1
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@item
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If the library source code has changed at all since the last update,
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then increment @var{revision} (@samp{@var{c}:@var{r}:@var{a}} becomes
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@ -3185,14 +3211,7 @@ If any interfaces have been removed or changed since the last public
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release, then set @var{age} to 0.
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@end enumerate
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@strong{@emph{Never}} try to set the interface numbers so that they
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correspond to the release number of your package. This is an abuse that
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only fosters misunderstanding of the purpose of library versions.
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Instead, use the @option{-release} flag (@pxref{Release numbers}), but be
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warned that every release of your package will not be binary compatible
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with any other release.
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The following explanation may help to understand the above rules a bit
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The following explanation may help to understand the steps above a bit
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better: consider that there are three possible kinds of reactions from
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users of your library to changes in a shared library:
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@ -3222,6 +3241,82 @@ to 0.
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In the above description, @emph{programs} using the library in question
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may also be replaced by other libraries using it.
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@node Guided version info update
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@subsection Updating the version info, guided by the libtool-next-version program
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The @samp{libtool-next-version} program is a wizard-like interactive tool,
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that is designed to avoid mistakes in the process of the manual update:
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@itemize @bullet
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@item
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It asks you questions, one by one, so that you can focus on one thing at a time.
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@item
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It prepares default answers, based on the set of symbols exported by library.
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@item
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It gives a couple of additional explanations and hints.
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@end itemize
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Before invoking the wizard,
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you need to build and install
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the previous release and the current release candidate of your package
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into different directories.
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For example, assume the last release was @code{libfoo-1.4.tar.gz},
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and before preparing @code{libfoo-1.5.tar.gz}, your current release candidate
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is @code{libfoo-1.4.99.tar.gz}.
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You build them like this:
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@example
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$ rm -rf /tmp/prev /tmp/curr
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$ tar xfz libfoo-1.4.tar.gz
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$ (cd libfoo-1.4
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&& ./configure --prefix=/tmp/prev
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&& make
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&& make install)
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$ tar xfz libfoo-1.4.99.tar.gz
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$ (cd libfoo-1.4.99
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&& ./configure --prefix=/tmp/curr
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&& make
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&& make install)
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@end example
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Then you are ready to invoke the wizard like this:
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@example
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$ libtool-next-version /tmp/prev/lib/libfoo.so /tmp/curr/lib/libfoo.so
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@end example
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@node Invoking libtool-next-version
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@subsection Invoking @command{libtool-next-version}
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@pindex libtool-next-version
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@cindex libtool-next-version command options
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@cindex command options, libtool-next-version
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@cindex options, libtool-next-version command
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The @code{libtool-next-version} program
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determines the next version to use for a libtool library.
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It is invoked as follows:
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@example
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libtool-next-version [@var{option}]... @var{previous-library} @var{current-library}
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@end example
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@var{previous-library} is
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the installed library (in @code{.a} or @code{.so} format)
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of the previous release.
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@var{current-library} is
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the installed library (in @code{.a} or @code{.so} format)
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of the current release candidate.
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It accepts the following options:
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@table @option
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@item --help
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Print a help message and exit.
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@item --version
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Print version information and exit.
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@end table
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@node Release numbers
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@section Managing release information
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297
libtool-next-version.in
Normal file
297
libtool-next-version.in
Normal file
@ -0,0 +1,297 @@
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#! /bin/sh
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#
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# Copyright (C) 2019-2025 Free Software Foundation, Inc.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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# This program is a wizard that helps a maintainer update the libtool
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# version of a shared library, according to the documentation section
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# 'Updating version info'
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# <https://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html>.
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#
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# Let's call the three parts of the version
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# LTV_CURRENT
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# LTV_REVISION
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# LTV_AGE
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#
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# The list of steps given in this documentation section
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# - If the library source code has changed at all since the last update,
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# then increment LTV_REVISION.
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# - If any interfaces have been added, removed, or changed since the last
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# update, increment LTV_CURRENT and set LTV_REVISION to 0.
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# - If any interfaces have been added since the last public release, then
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# increment LTV_AGE.
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# - If any interfaces have been removed or changed since the last public
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# release, then set LTV_AGE to 0.
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# leads to mistakes, because
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# - It does not say what "interfaces" are.
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# - It does not enforce that applying the second, third, or fourth rule
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# is only possible after applying the first rule.
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# - It does not enforce that applying the third or fourth rule is only
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# possible after applying the second rule.
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# func_usage
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# outputs to stdout the --help usage message.
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func_usage ()
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{
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echo "\
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Usage: libtool-next-version [OPTION]... PREVIOUS-LIBRARY CURRENT-LIBRARY
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Determines the next version to use for a libtool library.
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PREVIOUS-LIBRARY is the installed library (in .a or .so format) of the
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previous release.
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CURRENT-LIBRARY is the installed library (in .a or .so format) of the current
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release candidate.
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Options:
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--help print this help and exit
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--version print version information and exit
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Send patches and bug reports to <@PACKAGE_BUGREPORT@>."
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}
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# func_version
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# outputs to stdout the --version message.
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func_version ()
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{
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sed_extract_copyright_year='/Copyright (C)/{
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s/.*\([0-9][0-9][0-9][0-9]\).*/\1/p
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q
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}'
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copyright_year=`sed -n -e "$sed_extract_copyright_year" < "$0"`
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echo "libtool-next-version (GNU @PACKAGE@) @VERSION@"
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echo "Copyright (C) ${copyright_year} Free Software Foundation, Inc.
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License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
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This is free software: you are free to change and redistribute it.
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There is NO WARRANTY, to the extent permitted by law."
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echo
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printf 'Written by %s.\n' "Bruno Haible"
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}
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# func_fatal_error message
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# outputs to stderr a fatal error message, and terminates the program.
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func_fatal_error ()
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{
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echo "libtool-next-version: *** $1" 1>&2
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echo "libtool-next-version: *** Stop." 1>&2
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exit 1
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}
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# func_tmpdir
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# creates a temporary directory.
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# Sets variable
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# - tmp pathname of freshly created temporary directory
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func_tmpdir ()
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{
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# Use the environment variable TMPDIR, falling back to /tmp. This allows
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# users to specify a different temporary directory, for example, if their
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# /tmp is filled up or too small.
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: "${TMPDIR=/tmp}"
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{
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# Use the mktemp program if available. If not available, hide the error
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# message.
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tmp=`(umask 077 && mktemp -d -q "$TMPDIR/gtXXXXXX") 2>/dev/null` &&
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test -n "$tmp" && test -d "$tmp"
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} ||
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||||
{
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# Use a simple mkdir command. It is guaranteed to fail if the directory
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# already exists. $RANDOM is bash specific and expands to empty in shells
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||||
# other than bash, ksh and zsh. Its use does not increase security;
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||||
# rather, it minimizes the probability of failure in a very cluttered /tmp
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# directory.
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tmp=$TMPDIR/gt$$-$RANDOM
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(umask 077 && mkdir "$tmp")
|
||||
} ||
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||||
{
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||||
echo "$0: cannot create a temporary directory in $TMPDIR" >&2
|
||||
{ (exit 1); exit 1; }
|
||||
}
|
||||
}
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||||
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||||
# func_read_yesno
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||||
# reads an answer (yes or no).
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||||
# Sets variable
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||||
# - ans yes or no
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||||
func_read_yesno ()
|
||||
{
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||||
while true; do
|
||||
read ans
|
||||
if test yes = "$ans" || test no = "$ans"; then
|
||||
break
|
||||
fi
|
||||
echo "Invalid answer. Please answer yes or no."
|
||||
done
|
||||
}
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||||
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||||
# Command-line option processing.
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||||
while test $# -gt 0; do
|
||||
case "$1" in
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||||
--help | --hel | --he | --h )
|
||||
func_usage
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||||
exit 0 ;;
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||||
--version | --versio | --versi | --vers | --ver | --ve | --v )
|
||||
func_version
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||||
exit 0 ;;
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||||
-- ) # Stop option processing
|
||||
shift; break ;;
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||||
-* )
|
||||
func_fatal_error "unrecognized option: $option"
|
||||
;;
|
||||
* )
|
||||
break ;;
|
||||
esac
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||||
done
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||||
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||||
test $# = 2 || {
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||||
if test $# -gt 2; then
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||||
func_fatal_error "too many arguments"
|
||||
else
|
||||
func_fatal_error "Usage: libtool-next-version [OPTION]... PREVIOUS-LIBRARY CURRENT-LIBRARY"
|
||||
fi
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||||
}
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||||
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||||
test -f "$1" || func_fatal_error "file $1 not found"
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||||
test -f "$2" || func_fatal_error "file $2 not found"
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||||
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||||
(type nm) >/dev/null || func_fatal_error "program 'nm' not found"
|
||||
# Determine how to extract a symbol list from the 'nm' output.
|
||||
case `uname -s` in
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||||
Linux | FreeBSD | NetBSD | OpenBSD) nm_filter="sed -n -e 's/^.* [TWDRB] //p'" ;;
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||||
Darwin) nm_filter="sed -n -e 's/^.* [TWDRB] _//p'" ;;
|
||||
Minix) nm_filter="sed -n -e 's/^.* [TDC] _//p'" ;;
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||||
AIX) nm_filter="sed -n -e 's/ *[UD] .*//p' | sed -e 's/^\\.//'" ;;
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||||
HP-UX) nm_filter="grep '|extern|\\(code\\|data\\) |' | sed -e 's/|.*//' | sed -e 's/ *$//'" ;;
|
||||
IRIX) nm_filter="grep '|\\(GLOB\\|WEAK\\)' | sed -e 's/^.*|//'" ;;
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||||
SunOS)
|
||||
case `uname -r` in
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||||
5.10) nm_filter="sed -n -e 's/^.* [ATWDRBV] //p'" ;;
|
||||
*) nm_filter="grep '|\\(GLOB\\|WEAK\\)' | grep -v '|UNDEF' | grep -v '|SUNW' | sed -e 's/^.*|//'" ;;
|
||||
esac
|
||||
;;
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||||
CYGWIN*) nm_filter="sed -n -e 's/^.* T _//p'" ;;
|
||||
*) func_fatal_error "unknown OS - don't know how to interpret the 'nm' output" ;;
|
||||
esac
|
||||
nm_filter="$nm_filter | LC_ALL=C sort -u"
|
||||
|
||||
func_tmpdir
|
||||
eval "nm '$1' | $nm_filter > '$tmp/symlist1'"
|
||||
eval "nm '$2' | $nm_filter > '$tmp/symlist2'"
|
||||
|
||||
echo "Please enter the libtool version of the library in the previous release."
|
||||
|
||||
printf "LTV_CURRENT="; read current
|
||||
nondigits=`echo "$current" | tr -d '0123456789'`
|
||||
{ test -n "$current" && test -z "$nondigits"; } \
|
||||
|| func_fatal_error "LTV_CURRENT is invalid. It should be a nonnegative integer."
|
||||
|
||||
printf "LTV_REVISION="; read revision
|
||||
nondigits=`echo "$revision" | tr -d '0123456789'`
|
||||
{ test -n "$revision" && test -z "$nondigits"; } \
|
||||
|| func_fatal_error "LTV_REVISION is invalid. It should be a nonnegative integer."
|
||||
|
||||
printf "LTV_AGE="; read age
|
||||
nondigits=`echo "$age" | tr -d '0123456789'`
|
||||
{ test -n "$age" && test -z "$nondigits"; } \
|
||||
|| func_fatal_error "LTV_AGE is invalid. It should be a nonnegative integer."
|
||||
|
||||
echo
|
||||
echo "-------------------------------------------------------------------------------"
|
||||
echo "Did the library's code change at all since the previous version?"
|
||||
echo "You can usually detect this by looking at the source code changes in git;"
|
||||
echo "don't forget source code that is imported from other projects."
|
||||
if cmp "$tmp/symlist1" "$tmp/symlist2" >/dev/null; then
|
||||
echo "Please answer yes or no."
|
||||
else
|
||||
echo "The symbol list changed. Here are the differences:"
|
||||
(cd "$tmp" && diff symlist1 symlist2 | grep '^[<>]' | sed -e 's/^/ /')
|
||||
echo "Please answer yes or no (probably yes)."
|
||||
fi
|
||||
func_read_yesno
|
||||
if test "$ans" = yes; then
|
||||
|
||||
revision=`expr $revision + 1`
|
||||
|
||||
echo
|
||||
echo "-------------------------------------------------------------------------------"
|
||||
echo "Have any interfaces (functions, variables, classes) been removed since the"
|
||||
echo "previous release? What matters here are interfaces at the linker level;"
|
||||
echo "whether macros have been removed from the include files does not matter."
|
||||
if diff "$tmp/symlist1" "$tmp/symlist2" | grep '^< ' >/dev/null; then
|
||||
echo "Some symbols have been removed:"
|
||||
diff "$tmp/symlist1" "$tmp/symlist2" | grep '^< ' | sed -e 's/^< / /'
|
||||
echo "Please answer yes or no (probably yes)."
|
||||
else
|
||||
echo "Please answer yes or no."
|
||||
fi
|
||||
func_read_yesno
|
||||
|
||||
if test "$ans" = yes; then
|
||||
|
||||
current=`expr $current + 1`
|
||||
revision=0
|
||||
age=0
|
||||
|
||||
else
|
||||
|
||||
echo
|
||||
echo "-------------------------------------------------------------------------------"
|
||||
echo "Have any interfaces (functions, variables, classes) been changed since the"
|
||||
echo "previous release? This includes signature changes. It includes also details of"
|
||||
echo "how functions produce their results and the values of variables, IF AND ONLY IF"
|
||||
echo "users of the library are likely use these details in their test suite."
|
||||
echo "Please answer yes or no."
|
||||
func_read_yesno
|
||||
|
||||
if test "$ans" = yes; then
|
||||
|
||||
current=`expr $current + 1`
|
||||
revision=0
|
||||
age=0
|
||||
|
||||
else
|
||||
|
||||
echo
|
||||
echo "-------------------------------------------------------------------------------"
|
||||
echo "Have any interfaces (functions, variables, classes) been added since the"
|
||||
echo "previous release? What matters here are interfaces at the linker level;"
|
||||
echo "whether macros have been added to the include files does not matter."
|
||||
if diff "$tmp/symlist1" "$tmp/symlist2" | grep '^> ' >/dev/null; then
|
||||
echo "Some symbols have been added:"
|
||||
diff "$tmp/symlist1" "$tmp/symlist2" | grep '^> ' | sed -e 's/^> / /'
|
||||
echo "Please answer yes or no (probably yes)."
|
||||
else
|
||||
echo "Please answer yes or no."
|
||||
fi
|
||||
func_read_yesno
|
||||
|
||||
if test "$ans" = yes; then
|
||||
|
||||
current=`expr $current + 1`
|
||||
revision=0
|
||||
age=`expr $age + 1`
|
||||
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
fi
|
||||
|
||||
echo
|
||||
echo "-------------------------------------------------------------------------------"
|
||||
echo "This is the libtool version of the library for the new release:"
|
||||
echo "LTV_CURRENT=$current"
|
||||
echo "LTV_REVISION=$revision"
|
||||
echo "LTV_AGE=$age"
|
||||
Loading…
x
Reference in New Issue
Block a user