`nm` is used by "tools/create-exports-NetworkManager.sh" script.
Alloc configuring an explicit path during configure.
BINUTILS_NM=/usr/bin/nm ./configure
Generating "src/NetworkManager.ver" each time seems to work well.
Thus, src/NetworkManager.ver-orig is unused an gets easily out
of date. Just remove it. It's not useful anymore.
Moving the PPP manager to a separate plugin that is loaded when needed
has the advantage of slightly reducing memory footprint and makes it
possible to install the PPP support only where needed.
https://bugzilla.gnome.org/show_bug.cgi?id=773482
This adds 0.4 seconds to the build time.
You can disable it by setting $NM_BUILD_NO_CREATE_EXPORTS environment
variable. This is useful in the unexpected case that the script
is broken.
Or, if you just want to use a different, non-generated version-script.
Or, if you want to save 0.4 seconds build-time.
- include symbols from the "B" section.
- improve the script, to use libNetworkManager.a instead
of the NetworkManager binary. The former is before stripping
symbols.
- this allows the linker to drop unused symbols via link-time optimization
or with --gc-sections:
git clean -fdx
./autogen.sh --enable-ld-gc --enable-ifcfg-rh --enable-ifupdown \
--enable-ifnet --enable-ibft --enable-teamdctl --enable-wifi \
--with-modem-manager-1 --with-ofono --with-more-asserts \
--with-more-logging
make -j20
strip ./src/NetworkManager
gives 2822840 vs. 2625960 bytes (-7%).
- this also gives more control over the symbols that are used by the
plugins. Yes, it means if you modify a plugin to use a new symbols,
you have to extend NetworkManager.ver file.
You can run the script to create the version file:
$ ./tools/create-exports-NetworkManager.sh update
but be sure that your current configuration enables all plugins
and debugging options to actually use all symbols that are in use.
- If you compile with certain plugins enabled, you could theoretically
re-compile NetworkManager to expose less symbols. Try:
$ ./tools/create-exports-NetworkManager.sh build
- note that we have `make check` tests to ensure that all used
symbols of the plugins can be found. So, it should not be possible
to accidentally forget to expose a symbol.
