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AC_INIT([lalinference],[0.0.0.1],[lal-discuss@gravity.phys.uwm.edu])
AM_CONFIG_HEADER([include/config.h src/LALInferenceConfig.h])
AC_CONFIG_SRCDIR([src/LALInference.h])
AC_CONFIG_AUX_DIR([gnuscripts])
AC_CONFIG_MACRO_DIR([gnuscripts])
AC_CONFIG_FILES([ \
  lalinference.spec \
  lalinference.pc \
  Makefile \
  gnuscripts/Makefile \
  debian/Makefile \
  include/Makefile \
  include/lal/Makefile \
  src/Makefile \
  test/Makefile
])
AM_INIT_AUTOMAKE([foreign])

AC_CANONICAL_HOST

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LALSUITE_ARG_VAR
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# set library api info
# 1. start with version information of "0:0:0" for each libtool library
# 2. update the version information only immediately before a public
#    release of your software. More frequent updates are unnecessary,
#    and only guarantee that the current interface number gets larger
#    faster.
# 3. if the library source code has changed at all since the last
#    update, then increment revision ("c:r:a" becomes "c:r+1:a").
# 4. if any interfaces have been added, removed, or changed since the
#    last update, increment current, and set revision to 0.
# 5. if any interfaces have been added since the last public release,
#    then increment age.
# 6. if any interfaces have been removed since the last public release,
#    then set age to 0.
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AC_SUBST([LIBCURRENT],[0])
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AC_SUBST([LIBREVISION],[0])
AC_SUBST([LIBAGE],[0])
AC_SUBST([LIBVERSION],[${LIBCURRENT}:${LIBREVISION}:${LIBAGE}])

# default install path
AC_PREFIX_DEFAULT([/opt/lscsoft/lalinference])

# nightly build
LALSUITE_ENABLE_NIGHTLY

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# debug
LALSUITE_ENABLE_DEBUG

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# put version/configure info in config header
lalinference_version_major=`echo "$VERSION" | cut -d. -f1`
lalinference_version_minor=`echo "$VERSION" | cut -d. -f2`
lalinference_version_micro=`echo "$VERSION" | cut -d. -f3`
lalinference_version_devel=`echo "$VERSION" | cut -d. -f4-`
test -z "$lalinference_version_micro" && lalinference_version_micro=0
test -z "$lalinference_version_devel" && lalinference_version_devel=0
lalinspiral_configure_date=`date +"%Y-%m-%dT%H:%M:%S%z"`
AC_DEFINE_UNQUOTED([LALINFERENCE_VERSION],["$VERSION"],[LALInference Version])
AC_DEFINE_UNQUOTED([LALINFERENCE_VERSION_MAJOR],[$lalinference_version_major],
                   [LALInference Version Major Number])
AC_DEFINE_UNQUOTED([LALINFERENCE_VERSION_MINOR],[$lalinference_version_minor],
                   [LALInference Version Minor Number])
AC_DEFINE_UNQUOTED([LALINFERENCE_VERSION_MICRO],[$lalinference_version_micro],
                   [LALInference Version Micro Number])
AC_DEFINE_UNQUOTED([LALINFERENCE_VERSION_DEVEL],[$lalinference_version_devel],
                   [LALInference Version Devel Number])
AC_DEFINE_UNQUOTED([LALINFERENCE_CONFIGURE_ARGS],["$ac_configure_args"],
                   [LALInference Configure Arguments])
AC_DEFINE_UNQUOTED([LALINFERENCE_CONFIGURE_DATE],["$lalinspiral_configure_date"],
                   [LALInference Configure Date])

# enable strict gcc flags
LALSUITE_ENABLE_GCC_FLAGS

# optional lal libraries
LALSUITE_ENABLE_LALFRAME
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LALSUITE_ENABLE_LALMETAIO
LALSUITE_ENABLE_LALINSPIRAL
LALSUITE_ENABLE_LALPULSAR
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LALSUITE_ENABLE_LALXML
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# check for c compiler
m4_pattern_allow([AC_PROG_CC_C99])
m4_ifdef([AC_PROG_CC_C99],[AC_PROG_CC_C99],[LALSUITE_AC_PROG_CC_C99])

# use silent build rules if available
m4_ifdef([AM_SILENT_RULES],[AM_SILENT_RULES([yes])],)

# checks for programs
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_LN_S
LT_INIT
AM_PATH_PYTHON([2.4],,[AC_MSG_ERROR([Python-2.4, or higher, is required])])

# check for supported mac os x version
LALSUITE_OSX_VERSION_CHECK

# link tests using libtool
LALSUITE_USE_LIBTOOL

# check for header files
AC_HEADER_STDC

# check for required libraries
AC_CHECK_LIB([m],[main],,[AC_MSG_ERROR([could not find the math library])])

# check for gsl
PKG_CHECK_MODULES([GSL],[gsl],[true],[false])
CPPFLAGS="$CPPFLAGS $GSL_CFLAGS"
LIBS="$LIBS $GSL_LIBS"
AC_CHECK_LIB([gslcblas],[main],,[AC_MSG_ERROR([could not find the gsl library])])
AC_CHECK_LIB([gsl],[gsl_strerror],,[AC_MSG_ERROR([could not find the gsl library])])

# check for gsl headers
AC_CHECK_HEADERS([gsl/gsl_errno.h],,[AC_MSG_ERROR([could not find the gsl/gsl_errno.h header])])

# metaio
PKG_CHECK_MODULES([METAIO],[libmetaio],[true],[false])
CPPFLAGS="$CPPFLAGS $METAIO_CFLAGS"
LIBS="$LIBS $METAIO_LIBS"
AC_CHECK_LIB([metaio],[MetaioOpen],,[AC_MSG_ERROR([could not find the metaio library])])

# check for libmetaio headers
AC_CHECK_HEADERS([metaio.h],,[AC_MSG_ERROR([could not find the metaio.h header])])

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if test "$lalxml" = "true"; then
  # check for libxml2
  PKG_CHECK_MODULES([LIBXML2],[libxml-2.0 >= 2.6],[true],[false])
  CPPFLAGS="$CPPFLAGS $LIBXML2_CFLAGS"
  LIBS="$LIBS $LIBXML2_LIBS"
  AC_CHECK_LIB([xml2],[xmlInitParser],,[AC_MSG_WARN([cannot find the xml2 library])])
fi

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# check for lal libraries and headers
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LALSUITE_CHECK_LIB([LAL],[6.5.0.2],[LALVersion],[lal/LALStdio.h])
LALSUITE_CHECK_LIB([LALSupport],[6.5.0],[LALOpenDataFile],[lal/FileIO.h])
LALSUITE_CHECK_LIB([LALMetaIO],[1.0.1.2],[XLALCreateMetaTableDir],[lal/LIGOLwXMLRead.h])
LALSUITE_CHECK_LIB([LALFrame],[1.0.2.1],[LALFrOpen],[lal/LALFrameL.h])
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LALSUITE_CHECK_LIB([LALInspiral],[1.1.0.2],[LALInspiralParameterCalc],[lal/LALInspiral.h])
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LALSUITE_CHECK_LIB([LALPulsar],[1.1.0.2],[XLALComputeFaFb],[lal/ComputeFstat.h])
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# check for lalxml
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LALSUITE_CHECK_OPT_LIB([LALXML],[1.1.0.3],[XLALXMLFilePrintElements],[lal/LALXML.h])

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# add gcc specific flags
if test "$GCC" = yes; then
  CFLAGS="$CFLAGS $lal_gcc_flags"

  # add mac os x specific flags
  if test "x$MACOSX_VERSION" != "x"; then
    CFLAGS="$CFLAGS -mmacosx-version-min=10.4"
  fi
fi

# output
LAL_HEADER_LINK=${ac_aux_dir}/header-link.mk
AC_SUBST_FILE([LAL_HEADER_LINK])
AC_PROG_MAKE_SET
AC_OUTPUT
echo "
================================================================

        LALInference has now been successfully configured
        and will be installed under the directory:

          ${prefix}

        Now run 'make' to build LALInference
        and run 'make install' to install LALInference

================================================================="