#766: GHC 6.4.2 won't build on Mac OS X
-----------------------+----------------------------------------------------
Reporter: guest | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 6.4.3
Component: Compiler | Version: 6.4.2
Severity: blocker | Resolution:
Keywords: | Os: MacOS X
Difficulty: Unknown | Architecture: powerpc
-----------------------+----------------------------------------------------
Comment (by [EMAIL PROTECTED]):
Below is a patch that fixes the problem. It relies on the real readline
defining
the function rl_readline_version, which is not defined by libedit.
BTW, the bug is not that OS X's readline is broken --- OS X doesn't come
with
readline -- but that there is a symbolic link from
/usr/lib/libreadline.dylib to
/usr/lib/libedit.dylib. Libedit is an independently developed subset of
readline,
released under a BSD license. The evil symlink trips up anything that
depends
on having the real GNU readline.
{{{
--- libraries/readline/configure.ac.sav 2006-07-05 13:41:54.000000000
-0400
+++ libraries/readline/configure.ac 2006-07-05 13:09:45.000000000
-0400
@@ -41,7 +41,12 @@
AC_CHECK_LIB(readline, readline, HaveLibReadline=YES,
HaveLibReadline=NO)
fi
-if test $HaveLibTermcap = YES && test x"$HaveLibReadline" = xYES ; then
+dnl ** is our readline really readline, or is it BSD's libedit?
+if test x"$HaveLibReadline" = xYES ; then
+ AC_CHECK_LIB(readline, rl_readline_version, ReadlineIsLibedit=NO,
ReadlineIsLibedit=YES)
+fi
+
+if test $HaveLibTermcap = YES && test x"$HaveLibReadline" = xYES && test
x"$ReadlineIsLibedit" = xNO ; then
HAVE_READLINE=YES
READLINE_LIBS="readline $LibTermcap"
else
@@ -50,7 +55,7 @@
fi
AC_SUBST(READLINE_LIBS)
-if test "$HaveLibReadline"; then
+if test x"$HaveLibReadline" = xYES && test x"$ReadlineIsLibedit" = xNO ;
then
AC_CHECK_LIB(readline, rl_erase_empty_line,
[AC_DEFINE([HAVE_READLINE_4], [1], [Define to 1 if readline has
version >= 4.0.])],
[AC_DEFINE([HAVE_READLINE_4], [0], [Define to 1 if readline has
version >= 4.0.])])
}}}
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/766>
GHC <http://www.haskell.org/ghc/>
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