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Fixes breakage from the recent libdm split. Though these didn't
ever appear to be linked (could they have piggy backed from libdevmapper.so
being linked to them?).
The device-mapper directory now holds a copy of libdm source. At
the moment this code is identical to libdm. Over time code will
migrate out to appropriate places (see doc/refactoring.txt).
The libdm directory still exists, and contains the source for the
libdevmapper shared library, which we will continue to ship (though
not neccessarily update).
All code using libdm should now use the version in device-mapper.
As we start refactoring the code to break dependencies (see doc/refactoring.txt),
I want us to use full paths in the includes (eg, #include "base/data-struct/list.h").
This makes it more obvious when we're breaking abstraction boundaries, eg, including a file in
metadata/ from base/
This reverts commit 0931067dc5.
The dep files should be in the build dir, which is not necc. the src dir.
Easy to fix, but reverting for now until I have time to revisit.
I don't like having this in a common header because it means you end
up including too much and causing unneccessary dependencies. eg,
lib/misc/lib.h includes libdevmapper.h, internationalisation, and
logging stuff.
Git handles symlinks, tar handles symlinks. So I've just put the
links themselves into git.
This simplifies dependencies a little, and stop some build loops I was
hitting.
External build dir now works too.
Git handles symlinks, tar handles symlinks. So I've just put the
links themselves into git.
This simplifies dependencies a little, and stop some build loops I was
hitting.
Drop 'DMEVENT' make variable and use BUILD_DMEVENTD like with other daemons.
NOTE: by default we do not build dmeventd - maybe time to change
as lot of build targets basically do need dmeventd...
Switch to use SYSTEMD_LIBS and avoid linking systemd library with
every linked tool when dbus notification are enabled.
(TODO add missing testing for lib presence)
Check first if we need to even link -lrt - since clock functions
are normally emebeded with recent glibc (>=2.17)
Use standard RT_LIBS name.
Avoid duplicate test for realtime clock with lvmlockd
Show better error message when realtime clock support is missing or
disabled.
Link RT_LIBS explicitely with lvmlockd and lvmetad.
Avoid adding -g more then once for debug builds.
Avoid enabling DEBUG_MEM when we build multithreaded tools.
Link executables with -fPIE -pie and --export-dynamic LDFLAGS
Introduce PROGS_FLAGS to add option to pass flags for external libs.
Link lvm2 internally library only when really used.
Link DAEMON_LIBS with daemons.
Pass VALGRIND_CFLAGS internally
Set shell failure mode on couple places.
Put include/.symlinks_created as a prerequisite for dep calc.
Otherwise if these are not generated and user enters tests subdir and
runs 'make' he just gets endless loop of dep calculation.
Since commit 797c18d543 some internal symbols
have been exported in shared libraries by mistake because 'local: *' got
lost. Fix the shell script not to compare the whole filename with
'Base'
Commit 82a27a8 introduced a change to the symbol versioning macros
that allows a new version of a function to be introduced while
keeping the old behaviour via a versioned symbol export. The new
symbol is listed in the current .exported_symbols.DM_* file and a
default (@@VERSION) binding is created during linking.
This broke the build on RHEL5, RHEL6 and Debian Lenny. This is
because the make version in these distros returns results from the
$(wildcard *) command in a different order to the RHEL7 and F22
versions: this affects the ordering of the generated .export.sym
version script:
RHEL7/F22
for i in ./.exported_symbols.Base ./.exported_symbols.DM_1_02_99
./.exported_symbols.DM_1_02_98 ./.exported_symbols.DM_1_02_97
./.exported_symbols.DM_1_02_106 ./.exported_symbols.DM_1_02_105
./.exported_symbols.DM_1_02_103 ./.exported_symbols.DM_1_02_101
./.exported_symbols.DM_1_02_104 ./.exported_symbols.DM_1_02_100
290: 000000000003d101 106 FUNC GLOBAL DEFAULT 12 dm_stats_create_region_v1_02_104
*388: 000000000003cfc7 314 FUNC GLOBAL DEFAULT 12 dm_stats_create_region@@DM_1_02_106
391: 000000000003d101 106 FUNC GLOBAL DEFAULT 12 dm_stats_create_region@DM_1_02_104
*552: 000000000003cfc7 314 FUNC GLOBAL DEFAULT 12 dm_stats_create_region
944: 000000000003d101 106 FUNC GLOBAL DEFAULT 12 dm_stats_create_region_v1_02_104
992: 000000000003d101 106 FUNC GLOBAL DEFAULT 12 dm_stats_create_region@DM_1_02_104
RHEL6:
for i in ./.exported_symbols.Base ./.exported_symbols.DM_1_02_100
./.exported_symbols.DM_1_02_101 ./.exported_symbols.DM_1_02_103
./.exported_symbols.DM_1_02_104 ./.exported_symbols.DM_1_02_105
./.exported_symbols.DM_1_02_106 ./.exported_symbols.DM_1_02_97
./.exported_symbols.DM_1_02_98 ./.exported_symbols.DM_1_02_99; do\
290: 000000000003d0e1 106 FUNC GLOBAL DEFAULT 12 dm_stats_create_region_v1_02_104
390: 000000000003d0e1 106 FUNC GLOBAL DEFAULT 12 dm_stats_create_region@DM_1_02_104
*479: 000000000003cfa7 314 FUNC LOCAL DEFAULT 12 dm_stats_create_region
944: 000000000003d0e1 106 FUNC GLOBAL DEFAULT 12 dm_stats_create_region_v1_02_104
992: 000000000003d0e1 106 FUNC GLOBAL DEFAULT 12 dm_stats_create_region@DM_1_02_104
The F22 build has the correct behaviour (although the sort order is
inconsistent) but on RHEL6 the 1_02_106 symbol file appears after
version 1_02_104 which introduced the original symbol. This causes
the later version of the symbol to lose its version binding and be
reduced to local scope.
If using un-versioned exports of the current version of a symbol
(i.e. exported with the plain symbol name and no macro) and using
the linker script to set the symbol version, the current version
node must appear first in the version script: the un-versioned
symbol will be bound to the first version node found that contains
it.
On RHEL6 and the other older distros the original version of the
dm_stats_create_region() call sorted before the current version
(DM_1_02_104 vs. DM_1_02_106) leading to a subsequent link error for
the later symbol version:
dmsetup.o: In function `_do_stats_create_regions':
/root/src/git/lvm2/tools/dmsetup.c:4658: undefined reference to
`dm_stats_create_region'
Ensure that the ordering of entries in the version script is
consistent to avoid an old implementation shadowing a newer one by
sorting the list of file names before the loop:
$$(echo $(EXPORTED_SYMBOLS) | tr ' ' '\n' | sort -rnt_ -k5 )
This only sorts by patch level but this is sufficient to maintain
the correct order for current version files.
Tested on RHEL5, 6, 7 and F22.
We already use -lm functions in a couple of places (these are
satisfied by gcc built-ins for most builds): add a configure.in
check and explicitly link to -lm.
Avoid using make's $(shell invocation since the eval order is
then somewhat different and use $$( subshell.
This also fixes a problem when more then one symbol is found,
since target shell has been given separate word list
so the 'R' assignment would need "" around it.
