Improve ELF shared library handling

Pass in -rpath-link option to the linker so that blkid will build
correctly on systems that don't have libcom_err.so.2 installed.

Fix debugfs to only try to link with -ldl when building without shared
libraries; with ELF shared libraries, the library which requires -ldl
(libss.so) can required the library dependency itself.

Fix how we build tune2fs.static so that we use @LDFLAG_STATIC@, via
$(LDFLAGS_STATIC), instead of hard-coding the use of -static.

Addresses-Sourceforge-Bug: #2088537

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>

MCONFIG.in

@@ -41,7 +41,8 @@ INTL_FLAGS = @INTL_FLAGS@
 ALL_CFLAGS = $(CPPFLAGS) $(DEFS) $(USE_WFLAGS) $(CFLAGS) $(XTRA_CFLAGS) \
 	$(INTL_FLAGS) $(LINUX_INCLUDE) 
 LDFLAGS = @LDFLAGS@
-ALL_LDFLAGS = $(LDFLAGS)
+ALL_LDFLAGS = $(LDFLAGS) @LDFLAG_DYNAMIC@
+LDFLAGS_STATIC = $(LDFLAGS) @LDFLAG_STATIC@
 BUILD_CFLAGS = @BUILD_CFLAGS@
 BUILD_LDFLAGS = @BUILD_LDFLAGS@
 RM = @RM@
@@ -69,7 +70,7 @@ MKINSTALLDIRS = @MKINSTALLDIRS@
 # Library definitions
 #
 LIB = $(top_builddir)/lib
-LIBSS = $(LIB)/libss@LIB_EXT@ @DLOPEN_LIB@
+LIBSS = $(LIB)/libss@LIB_EXT@ @PRIVATE_LIBS_CMT@ @DLOPEN_LIB@
 LIBCOM_ERR = $(LIB)/libcom_err@LIB_EXT@
 LIBE2P = $(LIB)/libe2p@LIB_EXT@
 LIBEXT2FS = $(LIB)/libext2fs@LIB_EXT@

configure

@@ -684,6 +684,8 @@ CHECKER_CMT
 LIB_EXT
 STATIC_LIB_EXT
 PROFILED_LIB_EXT
+LDFLAG_DYNAMIC
+PRIVATE_LIBS_CMT
 TEST_IO_CMT
 DEBUGFS_CMT
 IMAGER_CMT
@@ -3842,6 +3844,8 @@ fi
 
 
 E2_PKG_CONFIG_STATIC=--static
+LDFLAG_DYNAMIC=
+PRIVATE_LIBS_CMT=
 # Check whether --enable-elf-shlibs was given.
 if test "${enable_elf_shlibs+set}" = set; then
   enableval=$enable_elf_shlibs; if test "$enableval" = "no"
@@ -3861,6 +3865,8 @@ else
 	esac
 	BINARY_TYPE=elfbin
 	LIB_EXT=.so
+	PRIVATE_LIBS_CMT=#
+	LDFLAG_DYNAMIC='-Wl,-rpath-link,$(top_builddir)/lib'
 	{ echo "$as_me:$LINENO: result: Enabling ELF shared libraries" >&5
 echo "${ECHO_T}Enabling ELF shared libraries" >&6; }
 fi
@@ -3962,6 +3968,8 @@ fi
 
 
 
+
+
 # Check whether --enable-jbd-debug was given.
 if test "${enable_jbd_debug+set}" = set; then
   enableval=$enable_jbd_debug; if test "$enableval" = "no"
@@ -15902,8 +15910,8 @@ CHECKER_CMT!$CHECKER_CMT$ac_delim
 LIB_EXT!$LIB_EXT$ac_delim
 STATIC_LIB_EXT!$STATIC_LIB_EXT$ac_delim
 PROFILED_LIB_EXT!$PROFILED_LIB_EXT$ac_delim
-TEST_IO_CMT!$TEST_IO_CMT$ac_delim
-DEBUGFS_CMT!$DEBUGFS_CMT$ac_delim
+LDFLAG_DYNAMIC!$LDFLAG_DYNAMIC$ac_delim
+PRIVATE_LIBS_CMT!$PRIVATE_LIBS_CMT$ac_delim
 _ACEOF
 
   if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 73; then
@@ -15977,6 +15985,8 @@ _ACEOF
 ac_delim='%!_!# '
 for ac_last_try in false false false false false :; do
   cat >conf$$subs.sed <<_ACEOF
+TEST_IO_CMT!$TEST_IO_CMT$ac_delim
+DEBUGFS_CMT!$DEBUGFS_CMT$ac_delim
 IMAGER_CMT!$IMAGER_CMT$ac_delim
 RESIZER_CMT!$RESIZER_CMT$ac_delim
 FSCK_PROG!$FSCK_PROG$ac_delim
@@ -16060,7 +16070,7 @@ LIBOBJS!$LIBOBJS$ac_delim
 LTLIBOBJS!$LTLIBOBJS$ac_delim
 _ACEOF
 
-  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 81; then
+  if test `sed -n "s/.*$ac_delim\$/X/p" conf$$subs.sed | grep -c X` = 83; then
     break
   elif $ac_last_try; then
     { { echo "$as_me:$LINENO: error: could not make $CONFIG_STATUS" >&5
@@ -16508,4 +16518,3 @@ if test "$no_create" != yes; then
 fi
 
 if test -f util/gen-tarball; then chmod +x util/gen-tarball; fi
-

configure.in

@@ -211,6 +211,8 @@ dnl
 dnl This needs to be before all of the --enable-*-shlibs options
 dnl
 E2_PKG_CONFIG_STATIC=--static
+LDFLAG_DYNAMIC=
+PRIVATE_LIBS_CMT=
 dnl
 dnl handle --enable-elf-shlibs
 dnl
@@ -232,6 +234,8 @@ else
 	esac]
 	BINARY_TYPE=elfbin
 	LIB_EXT=.so
+	PRIVATE_LIBS_CMT=#
+	LDFLAG_DYNAMIC=['-Wl,-rpath-link,$(top_builddir)/lib']
 	AC_MSG_RESULT([Enabling ELF shared libraries])
 fi
 ,
@@ -322,6 +326,8 @@ dnl
 AC_SUBST(LIB_EXT)
 AC_SUBST(STATIC_LIB_EXT)
 AC_SUBST(PROFILED_LIB_EXT)
+AC_SUBST(LDFLAG_DYNAMIC)
+AC_SUBST(PRIVATE_LIBS_CMT)
 dnl
 dnl handle --enable-jbd-debug
 dnl
@@ -921,4 +927,3 @@ for i in MCONFIG Makefile e2fsprogs.spec \
 done
 AC_OUTPUT($outlist)
 if test -f util/gen-tarball; then chmod +x util/gen-tarball; fi
-

e2fsck/Makefile.in

@@ -8,7 +8,6 @@ VPATH = @srcdir@
 top_builddir = ..
 my_dir = e2fsck
 INSTALL = @INSTALL@
-LDFLAG_STATIC = @LDFLAG_STATIC@
 
 @MCONFIG@
 
@@ -119,8 +118,7 @@ e2fsck: $(OBJS)  $(DEPLIBS)
 
 e2fsck.static: $(OBJS) $(STATIC_DEPLIBS)
 	@echo "	LD $@"
-	@$(LD) $(ALL_LDFLAGS) $(LDFLAG_STATIC) -o e2fsck.static $(OBJS) \
-		$(STATIC_LIBS) 
+	@$(LD) $(LDFLAGS_STATIC) -o e2fsck.static $(OBJS) $(STATIC_LIBS) 
 
 e2fsck.profiled: $(PROFILED_OBJS)  $(PROFILED_DEPLIBS)
 	@echo "	LD $@"

misc/Makefile.in

@@ -108,7 +108,7 @@ tune2fs: $(TUNE2FS_OBJS) $(DEPLIBS) $(DEPLIBS_E2P) $(DEPLIBS_BLKID)
 
 tune2fs.static: $(TUNE2FS_OBJS) $(STATIC_DEPLIBS) $(STATIC_LIBE2P) $(DEPSTATIC_LIBBLKID)
 	@echo "	LD $@"
-	@$(CC) $(ALL_LDFLAGS) -static -o tune2fs.static $(TUNE2FS_OBJS) \
+	@$(CC) $(LDFLAGS_STATIC) -o tune2fs.static $(TUNE2FS_OBJS) \
 		$(STATIC_LIBS) $(STATIC_LIBBLKID) $(STATIC_LIBUUID) \
 		$(STATIC_LIBE2P) $(LIBINTL)