Package: autoconf
Version: 2.61-4
Severity: normal
Tags: patch
AC_COMPILE_IFELSE and AC_LINK_IFELSE don't work as documented when
Erlang is the current language. I include a configure.ac which shows two
bugs.
1. AC_COMPILE_IFELSE always fails and runs ACTION-IF-NOT-FOUND, because
configure checks if conftest.$ac_objext is present. But it never is
when using Erlang.
2. AC_LINK_IFELSE always succeeds and runs ACTION-IF-FOUND, because
the exit status of erlc (the Erlang compiler) is thrown away and
configure uses the exit status of "chmod +x conftest$ac_exeext"
instead. (Solution replace all semicolons with "&&" in the link
command "ac_link".)
Test case and patch for 2. included.
Mikael
-- System Information:
Debian Release: lenny/sid
APT prefers testing
APT policy: (750, 'testing'), (671, 'stable'), (500, 'testing'), (300,
'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.18-5-k7 (SMP w/1 CPU core)
Locale: LANG=sv_SE.UTF-8, LC_CTYPE=sv_SE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages autoconf depends on:
ii debianutils 2.25.1 Miscellaneous utilities specific t
ii m4 1.4.10-1 a macro processing language
ii perl 5.8.8-12 Larry Wall's Practical Extraction
Versions of packages autoconf recommends:
ii automake [automaken] 1:1.10+nogfdl-1 A tool for generating GNU Standard
ii automake1.8 [automaken] 1.8.5+nogfdl-2 A tool for generating GNU Standard
ii automake1.9 [automaken] 1.9.6+nogfdl-3 A tool for generating GNU Standard
-- no debconf information
--- ./autoconf.m4f.orig 2007-01-18 04:57:38.000000000 +0100
+++ ./autoconf.m4f 2007-12-07 21:06:05.000000000 +0100
@@ -2171,7 +2171,7 @@
T15,312
AC_LANG(Erlang)ac_ext=erl
ac_compile='$ERLC $ERLCFLAGS -b beam conftest.$ac_ext >&AS_MESSAGE_LOG_FD'
-ac_link='$ERLC $ERLCFLAGS -b beam conftest.$ac_ext >&AS_MESSAGE_LOG_FD ; echo "#!/bin/sh" > conftest$ac_exeext ; echo "\"$ERL\" -run conftest start -run init stop -noshell" >> conftest$ac_exeext ; chmod +x conftest$ac_exeext'
+ac_link='$ERLC $ERLCFLAGS -b beam conftest.$ac_ext >&AS_MESSAGE_LOG_FD&& echo "#!/bin/sh" > conftest$ac_exeext&& echo "\"$ERL\" -run conftest start -run init stop -noshell" >> conftest$ac_exeext&& chmod +x conftest$ac_exeext'
T13,515
AC_CHECK_FILE_m4_defun_pro([AC_CHECK_FILE])AC_DIAGNOSE([cross],
--- ./erlang.m4.orig 2007-01-18 04:57:38.000000000 +0100
+++ ./erlang.m4 2007-12-07 21:01:22.000000000 +0100
@@ -112,7 +112,7 @@
m4_define([AC_LANG(Erlang)],
[ac_ext=erl
ac_compile='$ERLC $ERLCFLAGS -b beam conftest.$ac_ext >&AS_MESSAGE_LOG_FD'
-ac_link='$ERLC $ERLCFLAGS -b beam conftest.$ac_ext >&AS_MESSAGE_LOG_FD ; echo "#!/bin/sh" > conftest$ac_exeext ; echo "\"$ERL\" -run conftest start -run init stop -noshell" >> conftest$ac_exeext ; chmod +x conftest$ac_exeext'
+ac_link='$ERLC $ERLCFLAGS -b beam conftest.$ac_ext >&AS_MESSAGE_LOG_FD && echo "#!/bin/sh" > conftest$ac_exeext && echo "\"$ERL\" -run conftest start -run init stop -noshell" >> conftest$ac_exeext && chmod +x conftest$ac_exeext'
])
# AC_LANG_ERLANG
AC_PREREQ(2.59c)
AC_INIT(test, 1.0)
AC_ERLANG_NEED_ERLC
AC_ERLANG_PATH_ERL
AC_LANG_PUSH(Erlang)
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([],[
ok
])],
[],
[AC_MSG_WARN([Erlang COMPILE_IFELSE failed!])]
)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([],[
])], [AC_MSG_WARN([Erlang LINK_IFELSE should fail!])],
[]
)
AC_LANG_POP(Erlang)
AC_OUTPUT
