[ZOOKEEPER-1454] Document how to run autoreconf if cppunit is installed in a non-standard directory

• Type: Improvement
• Status: Resolved
• Priority: Trivial
• Resolution: Fixed
• Fix Version/s: 3.3.6, 3.4.4, 3.5.0
• Component/s: c client
• Hadoop Flags: Reviewed
• Assignee: Michi Mutsuzaki
• Reporter: Michi Mutsuzaki
• Created: 25/Apr/12 21:18
• Updated: 30/Jun/12 11:01
• Resolved: 30/Jun/12 06:51

Description

By default, the source distribution of cppunit is installed under /usr/local. When you run autoreconf -if, you get an error like this:

$ autoreconf -if
configure.ac:37: warning: macro `AM_PATH_CPPUNIT' not found in library
configure.ac:37: warning: macro `AM_PATH_CPPUNIT' not found in library
configure.ac:37: error: possibly undefined macro: AM_PATH_CPPUNIT
      If this token and others are legitimate, please use m4_pattern_allow.
      See the Autoconf documentation.
autoreconf: /usr/local/bin/autoconf failed with exit status: 1

This is because cppunit.m4 is installed under /usr/local/share/aclocal, but aclocal only looks at /usr/share/aclocal-$VERSION and /usr/share/aclocal assuming it was configured with --prefix=/usr. There are 3 ways to specify additional paths.

1. Set ACLOCAL.

ACLOCAL="aclocal -I /usr/local/share/aclocal" autoreconf -if 

2. Set ACLOCAL_PATH.

ACLOCAL_PATH=/usr/local/share/aclocal autoreconf -if

3. Set ACLOCAL_FLAGS.

ACLOCAL_FLAGS="-I /usr/local/share/aclocal" autoreconf -if

Apparently older versions of autoreconf don't respect ACLOCAL_PATH or ACLOCAL_FLAGS, so using ACLOCAL is probably the best way to fix it. I'll update src/c/README to document this.

--Michi