LD/doc: Clarify `-rpath' option's semantics WRT link-time dependencies

Mention in the description of the `-rpath' LD option the restrictions
the option has with respect to searching link-time dependencies of
shared objects referred in the link.  Previously these restrictions were
only documented along with the `-rpath-link' option, which may not be
the place one would consider when looking for the semantics of `-rpath'.

Copy the relevant part of the `-rpath-link' option description then,
splitting the now overlong paragraph into three, for legibility.

	ld/
	* ld.texi (Options): Also document `-rpath' option restrictions
	in the description of the option itself.

diff --git a/ld/ChangeLog b/ld/ChangeLog
index acbbf94..4131b1b 100644 (file)
--- a/ld/ChangeLog
+++ b/ld/ChangeLog
@@ -1,3 +1,8 @@
+2019-06-07  Maciej W. Rozycki  <macro@wdc.com>
+
+       * ld.texi (Options): Also document `-rpath' option restrictions
+       in the description of the option itself.
+
 2019-06-06  Sudakshina Das  <sudi.das@arm.com>
 
        * testsuite/ld-aarch64/aarch64-elf.exp: Add new tests.

diff --git a/ld/ld.texi b/ld/ld.texi
index 671a2a5..8d5c7bc 100644 (file)
--- a/ld/ld.texi
+++ b/ld/ld.texi
@@ -1958,12 +1958,17 @@ line.  It overrides @samp{-s} and @samp{-S}.
 Add a directory to the runtime library search path.  This is used when
 linking an ELF executable with shared objects.  All @option{-rpath}
 arguments are concatenated and passed to the runtime linker, which uses
-them to locate shared objects at runtime.  The @option{-rpath} option is
-also used when locating shared objects which are needed by shared
-objects explicitly included in the link; see the description of the
-@option{-rpath-link} option.  If @option{-rpath} is not used when linking an
-ELF executable, the contents of the environment variable
-@code{LD_RUN_PATH} will be used if it is defined.
+them to locate shared objects at runtime.
+
+The @option{-rpath} option is also used when locating shared objects which
+are needed by shared objects explicitly included in the link; see the
+description of the @option{-rpath-link} option.  Searching @option{-rpath}
+in this way is only supported by native linkers and cross linkers which
+have been configured with the @option{--with-sysroot} option.
+
+If @option{-rpath} is not used when linking an ELF executable, the
+contents of the environment variable @code{LD_RUN_PATH} will be used if it
+is defined.
 
 The @option{-rpath} option may also be used on SunOS.  By default, on
 SunOS, the linker will form a runtime search path out of all the