Add --disable-rpath to configure (fixes #422)

ChangeLog

@@ -1,3 +1,9 @@
+2020-10-20  Jay Berkenbilt  <ejb@ql.org>
+
+	* Build option: add --disable-rpath option to ./configure, which
+	disables passing -rpath to the linker when building shared
+	libraries with libtool. Fixes #422.
+
 2020-10-18  Jay Berkenbilt  <ejb@ql.org>
 
 	* Note that InputSource::unreadCh is deprecated and will be

TODO

@@ -6,7 +6,6 @@ Candidates for upcoming release
   * Add --warning-exit-0 option. Search for --no-warn in the docs.
 
 * Easy build/test
-  * #422: disable rpath when building RPM
   * #352: building standalone executables (lambda layer)
   * #460: potential malware in fuzzer seed corpus
   * Consider building workflow on a schedule to detect build rot. This

autoconf.mk.in

@@ -23,6 +23,7 @@ LIBS=@LIBS@
 CPPFLAGS=@CPPFLAGS@
 CXX=@CXX@
 CXXFLAGS=@CXXFLAGS@ $(CXXWFLAGS) $(WFLAGS)
+RPATH=@RPATH@
 AR=@AR@
 RANLIB=@RANLIB@
 DLLTOOL=@DLLTOOL@

autofiles.sums

@@ -1,4 +1,4 @@
-d2cb3f80935a7e6e265a04da6ba9c0df4eabae3de33c6a48384a9fa50a15143b  configure.ac
+cc3c7947646412e7c3152c3ef238226ede1c2199328a38df93debee26184b087  configure.ac
 d3f9ee6f6f0846888d9a10fd3dad2e4b1258be84205426cf04d7cef02d61dad7  aclocal.m4
 cf2c764639c4c94abc183a0976eca6ae500b80790ea25e3d0af97b23587363b7  libqpdf/qpdf/qpdf-config.h.in
 5297971a0ef90bcd5563eb3f7127a032bb76d3ae2af7258bf13479caf8983a60  m4/ax_cxx_compile_stdcxx.m4

configure

@@ -670,6 +670,7 @@ PKG_CONFIG
 WINDOWS_WORDSIZE
 IS_32BIT
 RANDOM_DEVICE
+RPATH
 LT_SONAME
 LT_AGE
 LT_REVISION
@@ -775,6 +776,7 @@ with_aix_soname
 with_gnu_ld
 with_sysroot
 enable_libtool_lock
+enable_rpath
 enable_insecure_random
 enable_os_secure_random
 with_random
@@ -1458,6 +1460,8 @@ Optional Features:
   --enable-fast-install[=PKGS]
                           optimize for fast installation [default=yes]
   --disable-libtool-lock  avoid locking (might break parallel builds)
+  --enable-rpath          whether to pass -rpath to the linker when building
+                          libraries
   --enable-insecure-random
                           whether to use stdlib's random number generator
                           (default is no)
@@ -16213,6 +16217,29 @@ LT_REVISION=1
 LT_SONAME=$(expr $LT_CURRENT - $LT_AGE)
 
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for whether to use -rpath" >&5
+$as_echo_n "checking for whether to use -rpath... " >&6; }
+# Check whether --enable-rpath was given.
+if test "${enable_rpath+set}" = set; then :
+  enableval=$enable_rpath; if test "$enableval" = "yes"; then
+      qpdf_USE_RPATH=1;
+    else
+      qpdf_USE_RPATH=0;
+    fi
+else
+  qpdf_USE_RPATH=1
+fi
+
+if test "$qpdf_USE_RPATH" = "1"; then
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+   RPATH='-rpath $(libdir)'
+else
+   { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -fvisibility=hidden" >&5
 $as_echo_n "checking for -fvisibility=hidden... " >&6; }
 try_flags=-fvisibility=hidden

configure.ac

@@ -61,6 +61,23 @@ AC_SUBST(LT_AGE)
 LT_SONAME=$(expr $LT_CURRENT - $LT_AGE)
 AC_SUBST(LT_SONAME)
 
+AC_MSG_CHECKING(for whether to use -rpath)
+AC_ARG_ENABLE(rpath,
+   AS_HELP_STRING([--enable-rpath],
+                  [whether to pass -rpath to the linker when building libraries]),
+   [if test "$enableval" = "yes"; then
+      qpdf_USE_RPATH=1;
+    else
+      qpdf_USE_RPATH=0;
+    fi], [qpdf_USE_RPATH=1])
+if test "$qpdf_USE_RPATH" = "1"; then
+   AC_MSG_RESULT(yes)
+   RPATH='-rpath $(libdir)'
+else
+   AC_MSG_RESULT(no)
+fi
+AC_SUBST(RPATH)
+
 AC_MSG_CHECKING(for -fvisibility=hidden)
 try_flags=-fvisibility=hidden
 oCXXFLAGS=$CXXFLAGS

make/libtool.mk

@@ -95,7 +95,7 @@ define makelib
 	$(LIBTOOL) --mode=link \
 		$(CXX) $(CXXFLAGS) $(LD_VERSION_FLAGS) \
 		 -o $(2) $(1) $(3) $(4) \
-		 -rpath $(libdir) -version-info $(5):$(6):$(7) -no-undefined
+		 $(RPATH) -version-info $(5):$(6):$(7) -no-undefined
 endef
 
 #                       1    2      3       4    5