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bug#21352: AC_CONFIG_MACRO_DIRS vs. ACLOCAL_FLAGS: different behavior wr
From: |
Christian Rössel |
Subject: |
bug#21352: AC_CONFIG_MACRO_DIRS vs. ACLOCAL_FLAGS: different behavior wrt AM_COND_IF, aclocal fails |
Date: |
Wed, 26 Aug 2015 17:09:00 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.8.0 |
automake 1.15/1.13.4 (other versions not tested)
autoconf 2.69
Dear all,
'AC_CONFIG_MACRO_DIRS([m4])' is supposed to replace 'ACLOCAL_FLAGS = -I
m4'. Just using AC_CONFIG_MACRO_DIRS works fine unless I have a
AM_COND_IF in configure.ac that references a <conditional> which is not
defined in configure.ac but in a m4 file that lives in subdirectory m4.
In this case aclocal (via autoreconf) fails with
error: AM_COND_IF: no such condition "<conditional>"
When using 'ACLOCAL_FLAGS = -I m4', autoreconf succeeds.
The difference between AC_CONFIG_MACRO_DIRS and ACLOCAL_FLAGS when
running autoreconf is that the latter passes '-I m4' to aclocal, the
former doesn't (but still finds the macros in the m4 subdirectory). As
ACLOCAL_AMFLAGS will be fully deprecated in Automake 2.0,
AC_CONFIG_MACRO_DIRS/aclocal needs IMO to be fixed (unfortunately I
can't help on that).
To reproduce:
$ cat > configure.ac <<'END'
AC_INIT([foo], [0])
AC_CONFIG_MACRO_DIRS([m4])
AM_INIT_AUTOMAKE([-Wall foreign])
MY_FEATURE
AM_COND_IF([HAVE_MY_FEATURE], [echo "bingo"])
AC_CONFIG_FILES(Makefile)
AC_OUTPUT
END
$ cat > Makefile.am <<'END'
#ACLOCAL_FLAGS = -I m4
END
$ mkdir m4
cat > m4/my_feature.m4 <<'END'
AC_DEFUN([MY_FEATURE], [
AM_CONDITIONAL([HAVE_MY_FEATURE], [test 1 -eq 1])])
END
$ autoreconf -v --install
autoreconf: Entering directory `.'
autoreconf: configure.ac: not using Gettext
autoreconf: running: aclocal
configure.ac:5: error: AM_COND_IF: no such condition "HAVE_MY_FEATURE"
/opt/packages/afs-dev/01/share/aclocal-1.13/cond-if.m4:23: AM_COND_IF is
expanded from...
configure.ac:5: the top level
autom4te: /opt/packages/afs-dev/01/bin/m4 failed with exit status: 1
aclocal: error: echo failed with exit status: 1
autoreconf: aclocal failed with exit status: 1
Best regards,
Christian
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Christian Rössel <=