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# Filename: package/.../procps/procps-tinfo-linking.patch
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Fix linking in the case libtinfo is a standalone library

In the case of top we get an error like this
------------------------------------------------------------------------
  CCLD   top
/bin/ld: top.o: undefined reference to symbol 'tparm'
/bin/ld: note: 'tparm' is defined in DSO /lib/libtinfo.so.5 so try adding it to the linker command line
/lib/libtinfo.so.5: could not read symbols: Invalid operation
collect2: error: ld returned 1 exit status
------------------------------------------------------------------------

Before checking for ncurses we check for libtinfo and set TINFO_LIBS which
simply gets add uncondtionally because in the case libtinfo is not stand-
alone the TINFO_LIBS variable will be empty.

--- a/configure.ac
+++ b/configure.ac
@@ -128,6 +128,12 @@
 if test "x$with_ncurses" = xno; then
   AM_CONDITIONAL(WITH_NCURSES, false)
 else
+  PKG_CHECK_MODULES([TINFO], [tinfo], [], [
+    AC_CHECK_LIB(tinfo, tparm, [have_tinfo=yes], [have_tinfo=no])
+    if test "x$have_tinfo" = xyes; then
+      TINFO_LIBS="-ltinfo"
+    fi
+  ])
   PKG_CHECK_MODULES([NCURSES], [ncurses], [], [
     AC_CHECK_LIB(ncurses, initscr, [have_ncurses=yes], [have_ncurses=no])
     AC_CHECK_HEADERS(curses.h ncurses.h term.h, [], [have_ncurses=no], AC_INCLUDES_DEFAULT)
@@ -147,6 +153,7 @@
   fi
 fi
 AC_SUBST([NCURSES_LIBS])
+AC_SUBST([TINFO_LIBS])
 AC_SUBST([WATCH_NCURSES_LIBS])
 
 AC_ARG_WITH([systemd],
--- a/Makefile.am
+++ b/Makefile.am
@@ -76,9 +76,9 @@
 	slabtop.1 \
 	watch.1
 slabtop_SOURCES = slabtop.c $(top_srcdir)/lib/strutils.c $(top_srcdir)/lib/fileutils.c
-slabtop_LDADD = @NCURSES_LIBS@
+slabtop_LDADD = @NCURSES_LIBS@ @TINFO_LIBS@
 watch_SOURCES = watch.c $(top_srcdir)/lib/strutils.c $(top_srcdir)/lib/fileutils.c
-watch_LDADD = @WATCH_NCURSES_LIBS@
+watch_LDADD = @WATCH_NCURSES_LIBS@ @TINFO_LIBS@
 endif
 
 if BUILD_SKILL
--- a/top/Makefile.am
+++ b/top/Makefile.am
@@ -19,7 +19,7 @@
 dist_man_MANS = \
 	top.1
 
-top_LDADD = @NCURSES_LIBS@
+top_LDADD = @NCURSES_LIBS@ @TINFO_LIBS@
 endif
 
 EXTRA_DIST =