AX_LIB_TABIX: initial version

See <http://savannah.gnu.org/patch/?7984> for further details.

1 files changed, 148 insertions, 0 deletions

diff --git a/m4/ax_lib_tabix.m4 b/m4/ax_lib_tabix.m4
new file mode 100644
index 0000000..9fe3f3c
--- /dev/null
+++ b/m4/ax_lib_tabix.m4
@@ -0,0 +1,148 @@
+# ===========================================================================
+#       http://www.gnu.org/software/autoconf-archive/ax_lib_tabix.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+#   AX_LIB_TABIX([ACTION-IF-TRUE], [ACTION-IF-FALSE])
+#
+# DESCRIPTION
+#
+#   This macro searches for an installed tabix library. If nothing was
+#   specified when calling configure, it searches first in /usr/local and
+#   then in /usr. If the --with-tabix=DIR is specified, it will try to find
+#   it in DIR/include/tabix/tabix.h and DIR/lib/libtabix.a. As a final try
+#   it will look in DIR/tabix.h and DIR/libtabix.a as the tabix library does
+#   not contain an install rule.
+#
+#   If --without-tabix is specified, the library is not searched at all.
+#
+#   If either the header file (sam.h) or the library (libbam) is not found,
+#   the configuration exits on error, asking for a valid tabix installation
+#   directory or --without-tabix.
+#
+#   The macro defines the symbol HAVE_TABIX if the library is found. You
+#   should use autoheader to include a definition for this symbol in a
+#   config.h file. Sample usage in a C/C++ source is as follows:
+#
+#     #ifdef HAVE_TABIX
+#     #include <tabix.h>
+#     #endif /* HAVE_TABIX */
+#
+#   The following output variables are set with AC_SUBST:
+#
+#     TABIX_CPPFLAGS
+#     TABIX_LDFLAGS
+#     TABIX_LIBS
+#
+#   You can use them like this in Makefile.am:
+#
+#     AM_CPPFLAGS = $(TABIX_CPPFLAGS)
+#     AM_LDFLAGS = $(TABIX_LDFLAGS)
+#     program_LDADD = $(TABIX_LIBS)
+#
+# LICENSE
+#
+#   Copyright (c) 2013 Timothy Brown <tbrown@freeshell.org>
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU General Public License as published by the
+#   Free Software Foundation; either version 3 of the License, or (at your
+#   option) any later version.
+#
+#   This program is distributed in the hope that it will be useful, but
+#   WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+#   Public License for more details.
+#
+#   You should have received a copy of the GNU General Public License along
+#   with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+#   As a special exception, the respective Autoconf Macro's copyright owner
+#   gives unlimited permission to copy, distribute and modify the configure
+#   scripts that are the output of Autoconf when processing the Macro. You
+#   need not follow the terms of the GNU General Public License when using
+#   or distributing such scripts, even though portions of the text of the
+#   Macro appear in them. The GNU General Public License (GPL) does govern
+#   all other use of the material that constitutes the Autoconf Macro.
+#
+#   This special exception to the GPL applies to versions of the Autoconf
+#   Macro released by the Autoconf Archive. When you make and distribute a
+#   modified version of the Autoconf Macro, you may extend this special
+#   exception to the GPL to apply to your modified version as well.
+
+#serial 1
+
+AU_ALIAS([AC_LIB_TABIX], [AX_LIB_TABIX])
+AC_DEFUN([AX_LIB_TABIX],
+#
+# Handle user hints
+#
+[AC_MSG_CHECKING(if tabix is wanted)
+AC_ARG_WITH([tabix],
+  AS_HELP_STRING([--with-tabix],
+                 [search for tabix in DIR/include and DIR/lib]),
+ [if test "$withval" != no ; then
+   AC_MSG_RESULT(yes)
+   if test -d "$withval" ; then
+     TABIX_HOME="$withval"
+   else
+     AC_MSG_WARN([Sorry, $withval does not exist, checking usual places])
+   fi
+ else
+   AC_MSG_RESULT(no)
+ fi],
+ [AC_MSG_RESULT(yes)])
+
+if test -f "${TABIX_HOME}/include/tabix/tabix.h" ; then
+        TABIX_INCDIR="${TABIX_HOME}/include/tabix"
+        TABIX_LIBDIR="${TABIX_HOME}/lib"
+elif test -f "${TABIX_HOME}/include/tabix.h" ; then
+        TABIX_INCDIR="${TABIX_HOME}/include"
+        TABIX_LIBDIR="${TABIX_HOME}/lib"
+elif test -f "${TABIX_HOME}/tabix.h" ; then
+        TABIX_INCDIR="${TABIX_HOME}"
+        TABIX_LIBDIR="${TABIX_HOME}"
+elif test -f "/usr/local/include/tabix/tabix.h" ; then
+        TABIX_HOME="/usr/local"
+        TABIX_INCDIR="${TABIX_HOME}/include/tabix"
+        TABIX_LIBDIR="${TABIX_HOME}/lib"
+else
+        TABIX_HOME="/usr"
+        TABIX_INCDIR="${TABIX_HOME}/include/tabix"
+        TABIX_LIBDIR="${TABIX_HOME}/lib"
+fi
+
+#
+# Locate tabix, if wanted
+#
+if test -n "${TABIX_HOME}" ; then
+
+        TABIX_OLD_LDFLAGS=$LDFLAGS
+        TABIX_OLD_CPPFLAGS=$LDFLAGS
+        LDFLAGS="$LDFLAGS -L${TABIX_LIBDIR}"
+        CPPFLAGS="$CPPFLAGS -I${TABIX_INCDIR}"
+        AC_LANG_SAVE
+        AC_LANG_C
+        AC_CHECK_HEADER(tabix.h, [ac_cv_tabix_h=yes], [ac_cv_tabix_h=no])
+        AC_CHECK_LIB(tabix, ti_open, [ac_cv_libtabix=yes], [ac_cv_libtabix=no])
+        AC_LANG_RESTORE
+        if test "$ac_cv_libtabix" = "yes" -a "$ac_cv_tabix_h" = "yes" ; then
+                #
+                # If both library and header were found, use them
+                #
+                AC_MSG_CHECKING(tabix)
+                AC_MSG_RESULT(ok)
+                with_tabix=yes
+        else
+                #
+                # If either header or library was not found, revert and bomb
+                #
+                LDFLAGS="$TABIX_OLD_LDFLAGS"
+                CPPFLAGS="$TABIX_OLD_CPPFLAGS"
+                AC_MSG_CHECKING(tabix)
+                AC_MSG_RESULT(failed)
+                AC_MSG_ERROR(either specify a valid tabix installation with --with-tabix=DIR or disable tabix usage with --without-tabix)
+        fi
+fi
+])