TOPSRCDIR=@TOPSRCDIR@
TOPBUILDDIR=@TOPBUILDDIR@

# Figure out various locations in the src/build tree.
# This is relatively fragile code and is essentially
# specific to netcdf-c. It does, however, have the virtue
# of isolating all this nonsense into one place.
# This will get somewhat simplified (I hope) when
# we move to a separate test_utilities directory

# This code is intended to provide constants
# for accessing various objects in the src/build
# tree(s) across multiple ways of building netcdf-c.
# Currently, the following build situations are supported.
# 1. Autoconf with make check: the src and build trees are the same
# 2. Autoconf with make distcheck: the src and build trees are distinct
# 3. Cmake on a *nix platform using e.g. gcc:
#    the src and build trees are distinct.
# 4. Cmake on windows using cygwin or msys.
#    The src and build trees are distinct.
# 
# For now, an explicit build using the Visual C(++) compiler
# is not supported. The big issue is the handling of executables
# and the notion of a VS configuration/build type like Debug or Release.
# When using VS, executables are placed in a subdirectory of the
# build directory. That subdirectory is named by the configuration type.
# Thus one finds ncdump.exe in $top_builddir/ncdump/Debug instead of
# $top_builddir/ncdump. An additional issue is the extension of an
# executable: .exe vs nothing. This code attempts to figure out which is used.
# 
# For possible future fixes, a placeholder is left in place in the
# following code named VS. If it were set to the build type, then,
# in theory, this code would work with Visual C. It is disabled for now.
# 
# The goal, then, of this common code is to set up some useful
#constants for use in test shell scripts.
# 1. srcdir - absolute path to the source dir (e.g. ${top_srcdir}/ncgen)
# 2. top_srcdir - absolute path to the root of the source
# 3. top_builddir - absolute path to the root of the build directory;
#                   may be same as top_srcdir (e.g. #1).
# 4. builddir - absolute path of th the directory into which generated
#               stuff (.nc, .cdl, etc) is stored.
# 5. execdir - absolute path of the directory into which executables are
#              placed. For all but the VS case, execdir == builddir.
#
# The following are defined to support inter-directory references.
# 6. NCDUMP - absolute path to the ncdump.exe executable
# 7. NCCOPY - absolute path to the nccopy.exe executable
# 8. NCGEN - absolute path to ncgen.exe
# 9. NCGEN3 - absolute path to ncgen3.exe

# Allow global set -x mechanism for debugging.
if test "x$SETX" = x1 ; then set -x ; fi

# We assume that TOPSRCDIR and TOPBUILDDIR are defined
# At the top of this shell script
top_srcdir="$TOPSRCDIR"
top_builddir="$TOPBUILDDIR"

# Currently not used, but left as a Visual Studio placeholder.
# VS=Debug

# srcdir may or may not be defined, but if not, then create it
if test "x$srcdir" = x ; then
  # we need to figure out our directory
  # pick off the last component as the relative name of this directory
  srcdir=`pwd`
  current=`basename $srcdir`
  srcdir="${top_srcdir}/$current"
fi

# We also assume we are executing in builddir
builddir=`pwd`

# execdir is an alias for builddir except
# in the currently unsupported case of using Visual Studio
execdir="${builddir}$VS"

# pick off the last component as the relative name of this directory
thisdir=`basename $srcdir`

WD=`pwd`
# Absolutize paths of interest
cd $srcdir; srcdir=`pwd` ; cd $WD
cd $top_srcdir; top_srcdir=`pwd` ; cd $WD
cd $builddir; builddir=`pwd` ; cd $WD
cd $top_builddir; top_builddir=`pwd` ; cd $WD
cd $execdir; execdir=`pwd` ; cd $WD

# If we have cygpath (which only exists under CYGWIN),
# then try to normalize selected file paths.

# So are we operating under CYGWIN? (test using uname)
tcc=`uname | cut -d '_'  -f 1`
if test "x$tcc_os" = xCYGWIN ; then ISCYGWIN=1; fi

# Normalize selected paths
#if test "x$ISCYGWIN" = x1; then
#srcdir=`cygpath -mla $srcdir`
#top_srcdir=`cygpath -mla $top_srcdir`
#builddir=`cygpath -mla $builddir`
#top_builddir=`cygpath -mla $top_builddir`
#execdir=`cygpath -mla $execdir`
#fi

# For sun os
export srcdir top_srcdir builddir top_builddir execdir

# Figure out executable extension (probably a better way)
if test -e "${top_builddir}/ncdump${VS}/ncdump.exe" ; then
  ext=".exe"
else
  ext=""
fi

# We need to locate certain executables (and other things)
# and capture absolute paths
NCDUMP="${top_builddir}/ncdump${VS}/ncdump${ext}"
NCCOPY="${top_builddir}/ncdump${VS}/nccopy${ext}"
NCGEN="${top_builddir}/ncgen${VS}/ncgen${ext}"
NCGEN3="${top_builddir}/ncgen3${VS}/ncgen3${ext}"

# Temporary hacks (until we have a test_utils directory)
# to locate certain specific test files
ncgen3c0="${top_srcdir}/ncgen3/c0.cdl"
ncgenc0="${top_srcdir}/ncgen/c0.cdl"
ncgenc04="${top_srcdir}/ncgen/c0_4.cdl"

# Make sure we are in builddir (not execdir)
cd $builddir