diff --git a/doc/ref/api-io.texi b/doc/ref/api-io.texi
index 8b44224dc..e1501e2b4 100644
--- a/doc/ref/api-io.texi
+++ b/doc/ref/api-io.texi
@@ -443,8 +443,12 @@ open.
 @deffn {Scheme Procedure} seek fd_port offset whence
 @deffnx {C Function} scm_seek (fd_port, offset, whence)
 Sets the current position of @var{fd_port} to the integer
-@var{offset}, which is interpreted according to the value of
-@var{whence}.
+@var{offset}.  For a file port, @var{offset} is expressed
+as a number of bytes; for other types of ports, such as string
+ports, @var{offset} is an abstract representation of the
+position within the port's data, not necessarily expressed
+as a number of bytes.  @var{offset} is interpreted according to
+the value of @var{whence}.
 
 One of the following variables should be supplied for
 @var{whence}:
@@ -460,7 +464,7 @@ Seek from the end of the file.
 If @var{fd_port} is a file descriptor, the underlying system
 call is @code{lseek}.  @var{port} may be a string port.
 
-The value returned is the new position in the file.  This means
+The value returned is the new position in @var{fd_port}.  This means
 that the current position of a port can be obtained using:
 @lisp
 (seek port 0 SEEK_CUR)
diff --git a/meta/Makefile.am b/meta/Makefile.am
index b543c5e0a..5b89edb9a 100644
--- a/meta/Makefile.am
+++ b/meta/Makefile.am
@@ -48,26 +48,50 @@ aclocal_DATA = guile.m4
 # Script to instantiate substitution variables found on the standard
 # input.  We do this from the Makefile because we need things like
 # $(program_transform_name), which are not usable from 'configure.ac'.
-substitute =								\
-  guile="`echo guile | $(SED) -e '$(program_transform_name)'`" ;	\
-  guild="`echo guild | $(SED) -e '$(program_transform_name)'`" ;	\
-  installed_guile="@bindir@/$$guile" ;					\
-  $(SED) -e "s,[@]PACKAGE_NAME[@],$(PACKAGE_NAME),g"			\
-	 -e "s,[@]PACKAGE_BUGREPORT[@],$(PACKAGE_BUGREPORT),g"		\
-	 -e "s,[@]PKG_CONFIG[@],$(PKG_CONFIG),g"			\
-	 -e "s,[@]pkgconfigdir[@],$(pkgconfigdir),g"			\
-	 -e "s,[@]prefix[@],$(prefix),g"				\
-	 -e "s,[@]exec_prefix[@],$(exec_prefix),g"			\
-	 -e "s,[@]bindir[@],$(bindir),g"				\
-	 -e "s,[@]libdir[@],$(libdir),g"				\
-	 -e "s,[@]includedir[@],$(includedir),g"			\
-	 -e "s,[@]datarootdir[@],$(datarootdir),g"			\
-	 -e "s,[@]datadir[@],$(datadir),g"				\
-	 -e "s,[@]sitedir[@],$(sitedir),g"				\
-	 -e "s,[@]guile[@],$$guile,g"					\
-	 -e "s,[@]guild[@],$$guild,g"					\
+substitute =									\
+  guile="`echo guile | $(SED) -e '$(program_transform_name)'`" ;		\
+  guild="`echo guild | $(SED) -e '$(program_transform_name)'`" ;		\
+  installed_guile="@bindir@/$$guile" ;						\
+  $(SED) -e "s,[@]PACKAGE_NAME[@],$(PACKAGE_NAME),g"				\
+	 -e "s,[@]PACKAGE_BUGREPORT[@],$(PACKAGE_BUGREPORT),g"			\
+	 -e "s,[@]GUILE_EFFECTIVE_VERSION[@],$(GUILE_EFFECTIVE_VERSION),g"	\
+	 -e "s,[@]GUILE_VERSION[@],$(GUILE_VERSION),g"				\
+	 -e "s,[@]GUILE_CFLAGS[@],$(GUILE_CFLAGS),g"				\
+	 -e "s,[@]GUILE_LIBS[@],$(GUILE_LIBS),g"				\
+	 -e "s,[@]LIBGUILE_INTERFACE[@],$(LIBGUILE_INTERFACE),g"		\
+	 $(dependency_substitutions)						\
+	 -e "s,[@]PKG_CONFIG[@],$(PKG_CONFIG),g"				\
+	 -e "s,[@]pkgconfigdir[@],$(pkgconfigdir),g"				\
+	 -e "s,[@]prefix[@],$(prefix),g"					\
+	 -e "s,[@]exec_prefix[@],$(exec_prefix),g"				\
+	 -e "s,[@]bindir[@],$(bindir),g"					\
+	 -e "s,[@]libdir[@],$(libdir),g"					\
+	 -e "s,[@]includedir[@],$(includedir),g"				\
+	 -e "s,[@]datarootdir[@],$(datarootdir),g"				\
+	 -e "s,[@]datadir[@],$(datadir),g"					\
+	 -e "s,[@]sitedir[@],$(sitedir),g"					\
+	 -e "s,[@]guile[@],$$guile,g"						\
+	 -e "s,[@]guild[@],$$guild,g"						\
 	 -e "s,[@]installed_guile[@],$$installed_guile,g"
 
+# Substitutions for dependencies that appear in 'guile-2.0.pc'.
+dependency_substitutions =				\
+  -e "s,[@]BDW_GC_CFLAGS[@],$(BDW_GC_CFLAGS),g"		\
+  -e "s,[@]BDW_GC_LIBS[@],$(BDW_GC_LIBS),g"		\
+  -e "s,[@]LIB_CLOCK_GETTIME[@],$(LIB_CLOCK_GETTIME),g"	\
+  -e "s,[@]LIBGMP[@],$(LIBGMP),g"			\
+  -e "s,[@]LIBLTDL[@],$(LIBLTDL),g"			\
+  -e "s,[@]LIBFFI_LIBS[@],$(LIBFFI_LIBS),g"		\
+  -e "s,[@]LIBUNISTRING[@],$(LIBUNISTRING),g"		\
+  -e "s,[@]LIBICONV[@],$(LIBICONV),g"			\
+  -e "s,[@]LIBINTL[@],$(LIBINTL),g"			\
+  -e "s,[@]LIBSOCKET[@],$(LIBSOCKET),g"			\
+  -e "s,[@]SERVENT_LIB[@],$(SERVENT_LIB),g"		\
+  -e "s,[@]HOSTENT_LIB[@],$(HOSTENT_LIB),g"		\
+  -e "s,[@]GETADDRINFO_LIB[@],$(GETADDRINFO_LIB),g"	\
+  -e "s,[@]INET_NTOP_LIB[@],$(INET_NTOP_LIB),g"		\
+  -e "s,[@]INET_PTON_LIB[@],$(INET_PTON_LIB),g"
+
 guile-$(GUILE_EFFECTIVE_VERSION).pc: guile-$(GUILE_EFFECTIVE_VERSION).pc.in
 	$(substitute) < "$<" > "$@.out"
 	mv "$@.out" "$@"