Source: rlwrap
Version: 0.42-3
Severity: normal
Tags: patch upstream
User: helm...@debian.org
Usertags: rebootstrap
rlwrap fails to cross build from source, because it uses an uncacheable
AC_CHECK_FILES where the cache variable contains the process id of
./configure. After thinking about it, I figured that replacing
"/proc/$$" with "/proc/self" would be a reasonable compromise making the
cache variable predictable. Thus it can be provided with a cross build.
When using the attached patch and providing
ac_cv_file__proc_self_cwd_cwdcheck (yes for linux-any and kfreebsd-any,
no for hurd-any), rlwrap cross build successfully. Please consider
applying the patch.
Helmut
From: Helmut Grohne <hel...@subdivi.de>
Subject: make cross building feasible
The file chosen has two problems:
* $$ varies across builds, so the variable essentially is not cacheable, but
AC_CHECK_FILES must be cacheable for cross compilation.
* configure.ac may not be present for out-of-tree builds. Create a file to
be sure it actually exists.
Index: rlwrap-0.42/configure.ac
===================================================================
--- rlwrap-0.42.orig/configure.ac
+++ rlwrap-0.42/configure.ac
@@ -349,10 +349,12 @@
# but they wil fail unless /no is a procfs mountpoint ;-)
echo "Will rlwrap find command's working directory under ${opt_proc_mountpoint}/<commands pid>/cwd? let's see..."
-AC_CHECK_FILES($opt_proc_mountpoint/$$/cwd/configure.ac,[
+touch cwdcheck
+AC_CHECK_FILES($opt_proc_mountpoint/self/cwd/cwdcheck,[
AC_DEFINE(HAVE_PROC_PID_CWD, 1 ,[Define to 1 if <opt_proc_mountpoint>/<pid>/cwd is a link to working directory of process <pid>])
AC_SUBST(HAVE_PROC_PID_CWD,[yes])
],[AC_SUBST(HAVE_PROC_PID_CWD,[no])])
+rm -f $cwdcheck
AC_DEFINE_UNQUOTED(PROC_MOUNTPOINT, "[$opt_proc_mountpoint]", [Define to location of Linux-style procfs mountpoint if provided and valid])
