hi list,
during lvm2.2.02.98 compilation,
a linker script gets generated which exposes only symbols matching the
gnu sed regex. this fails using a posix compliant sed program, leading
to an almost empty linker script and subsequently missing symbols:
set -e; \
( cat ./.exported_symbols; \
if test x./libdevmapper.h != x; then \
gcc -E -P -I./ioctl -I. -I. -I../include -DHAVE_CONFIG_H
-DDM_IOCTLS -DDM_DEVICE_UID=0 -DDM_DEVICE_GID=0 -DDM_DEVICE_MODE=0600
./libdevmapper.h | \
sed -ne "/^typedef|}/!s/.*[ \*]\(\dm_[a-z0-9_]*\)(.*/\1/p"; \
fi \
) > .exported_symbols_generated
set -e; (echo "Base {"; echo " global:"; \
sed "s/^/ /;s/$/;/" < .exported_symbols_generated; \
echo " local:"; echo " *;"; echo "};") > .export.sym
gcc -shared -Wl,-soname,libdevmapper.so.1.02 \
-D_GNU_SOURCE -fPIC -O2 -Wl,--version-script,.export.sym
-L../libdm -L../lib -L../libdaemon/client datastruct/bitset.o
datastruct/hash.o datastruct/list.o libdm-common.o libdm-file.o
libdm-deptree.o libdm-string.o libdm-report.o libdm-config.o
mm/dbg_malloc.o mm/pool.o regex/matcher.o regex/parse_rx.o regex/ttree.o
ioctl/libdm-iface.o -o ioctl/libdevmapper.so.1.02
here is the statement that generates the symbollist:
gcc -E -P -I./ioctl -I. -I. -I../include -DHAVE_CONFIG_H -DDM_IOCTLS
-DDM_DEVICE_UID=0 -DDM_DEVICE_GID=0 -DDM_DEVICE_MODE=0600
./libdevmapper.h | sed -ne "/^typedef|}/!s/.*[
\*]\(\dm_[a-z0-9_]*\)(.*/\1/p";
may i ask kindly to reformulate that statement so that it works with
posix sed (as used in busybox 1.20.2) ?
afaict, both the usage of | and \d are non-posix. the latter can
probably be fixed by using [:digit:], the former by using 2 separate
statements.
thanks,
--JS
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