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Hiding all non-API symbols from the linker by use of --version-script

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This commit is contained in:
Thomas Schmitt
2010-07-04 17:01:21 +00:00
parent 9e3f0f22a7
commit 382439770f
4 changed files with 190 additions and 4 deletions
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26
libburn/trunk/configure.ac
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@@ -188,7 +188,7 @@ CFLAGS="$CFLAGS $STATVFS_DEF"
dnl ts A91122
AC_ARG_ENABLE(track-src-odirect,
[ --enable-track-src-odirect Enable use of O_DIRECT with track input, default=no],
[ --enable-track-src-odirect Enable use of O_DIRECT with track input, default=no],
, enable_track_src_odirect=no)
if test x$enable_track_src_odirect = xyes; then
LIBBURN_O_DIRECT_DEF="-DLibburn_read_o_direcT"
@@ -203,7 +203,7 @@ CFLAGS="$CFLAGS $LIBBURN_O_DIRECT_DEF"
dnl ts A91116
AC_ARG_ENABLE(dvd-obs-64k,
[ --enable-dvd-obs-64k 64 KB default size for DVD/BD writing, default=no],
[ --enable-dvd-obs-64k 64 KB default size for DVD/BD writing, default=no],
, enable_dvd_obs_64k=no)
if test x$enable_dvd_obs_64k = xyes; then
LIBBURN_DVD_OBS_64K="-DLibburn_dvd_obs_default_64K"
@@ -216,7 +216,7 @@ CFLAGS="$CFLAGS $LIBBURN_DVD_OBS_64K"
dnl ts A91218
AC_ARG_ENABLE(libcdio,
[ --enable-libcdio Enable EXPERIMENTAL use of libcdio as system adapter, default=no],
[ --enable-libcdio Enable EXPERIMENTAL use of libcdio as system adapter, default=no],
, enable_libcdio=no)
if test x$enable_libcdio = xyes; then
dnl Check whether there is libcdio-devel and libcdio-runtime.
@@ -242,6 +242,26 @@ else
fi
dnl ts B00704
# Library versioning normally serves a complex purpose.
# Since libburn obeys strict ABI backward compatibility, it needs only the
# simple feature to declare function names "global:" or "local:". Only the
# global ones are visible to applications at library load time.
dnl
dnl >>> TODO:
dnl >>> make an actual try whether -Wl,--version-script=libburn/libburn.ver
dnl >>> is accepted by the compiler
dnl
AC_ARG_ENABLE(versioned-libs,
[ --enable-versioned-libs Enable strict symbol encapsulation , default=yes],
, enable_versioned_libs=yes)
if test x$enable_versioned_libs = xyes; then
LDFLAGS="$LDFLAGS -Wl,--version-script=libburn/libburn.ver"
echo "enabled strict symbol encapsulation"
else
echo "disabled strict symbol encapsulation"
fi
dnl Add compiler-specific flags