#! /bin/sh

# Like the ctags/etags example from the manual,
# with one extra indirection in the sources.

. $srcdir/defs || exit 1

set -e

cat >> configure.in << 'END'
AC_PROG_CC
AC_OUTPUT
END

# Using a separate variable to hold all the sources for a program is
# common when building many flavors of this program, each with
# different flags.

cat > Makefile.am << 'END'
ETAGSSOURCE = etags.c
bin_PROGRAMS = etags ctags
ctags_SOURCES = $(ETAGSSOURCE)
ctags_CFLAGS = -DCTAGS
etags_SOURCES = $(ETAGSSOURCE)
etags_CFLAGS = -DETAGS
END

cat > etags.c << 'END'
#include <stdio.h>
int
main (int argc, char *argv[])
{
#ifdef CTAGS
   puts ("ctags");
#else
   puts ("etags");
#endif
   return 0;
}
END

$ACLOCAL
$AUTOCONF
$AUTOMAKE -a

./configure
$MAKE
./ctags | grep ctags
./etags | grep etags