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#!/bin/sh

# These variables are automatically filled in by the configure script.

name="@PACKAGE_TARNAME@"

version="@PACKAGE_VERSION@"

show_usage()

{

  echo "Usage: gtest-config [OPTIONS...]"

}

show_help()

{

  show_usage

  cat <<\EOF

The `gtest-config' script provides access to the necessary compile and linking

flags to connect with Google C++ Testing Framework, both in a build prior to

installation, and on the system proper after installation. The installation

overrides may be issued in combination with any other queries, but will only

affect installation queries if called on a built but not installed gtest. The

installation queries may not be issued with any other types of queries, and

only one installation query may be made at a time. The version queries and

compiler flag queries may be combined as desired but not mixed. Different

version queries are always combined with logical "and" semantics, and only the

last of any particular query is used while all previous ones ignored. All

versions must be specified as a sequence of numbers separated by periods.

Compiler flag queries output the union of the sets of flags when combined.

 Examples:

  gtest-config --min-version=1.0 || echo "Insufficient Google Test version."

  g++ $(gtest-config --cppflags --cxxflags) -o foo.o -c foo.cpp

  g++ $(gtest-config --ldflags --libs) -o foo foo.o

  # When using a built but not installed Google Test:

  g++ $(../../my_gtest_build/scripts/gtest-config ...) ...

  # When using an installed Google Test, but with installation overrides:

  export GTEST_PREFIX="/opt"

  g++ $(gtest-config --libdir="/opt/lib64" ...) ...

 Help:

  --usage                    brief usage information

  --help                     display this help message

 Installation Overrides:

  --prefix=             overrides the installation prefix

  --exec-prefix=        overrides the executable installation prefix

  --libdir=             overrides the library installation prefix

  --includedir=         overrides the header file installation prefix

 Installation Queries:

  --prefix                   installation prefix

  --exec-prefix              executable installation prefix

  --libdir                   library installation directory

  --includedir               header file installation directory

  --version                  the version of the Google Test installation

 Version Queries:

  --min-version=VERSION      return 0 if the version is at least VERSION

  --exact-version=VERSION    return 0 if the version is exactly VERSION

  --max-version=VERSION      return 0 if the version is at most VERSION

 Compilation Flag Queries:

  --cppflags                 compile flags specific to the C-like preprocessors

  --cxxflags                 compile flags appropriate for C++ programs

  --ldflags                  linker flags

  --libs                     libraries for linking

EOF

}

# This function bounds our version with a min and a max. It uses some clever

# POSIX-compliant variable expansion to portably do all the work in the shell

# and avoid any dependency on a particular "sed" or "awk" implementation.

# Notable is that it will only ever compare the first 3 components of versions.

# Further components will be cleanly stripped off. All versions must be

# unadorned, so "v1.0" will *not* work. The minimum version must be in $1, and

# the max in $2. TODO(chandlerc@google.com): If this ever breaks, we should

# investigate expanding this via autom4te from AS_VERSION_COMPARE rather than

# continuing to maintain our own shell version.

check_versions()

{

  major_version=${version%%.*}

  minor_version="0"

  point_version="0"

  if test "${version#*.}" != "${version}"; then

    minor_version=${version#*.}

    minor_version=${minor_version%%.*}

  fi

  if test "${version#*.*.}" != "${version}"; then

    point_version=${version#*.*.}

    point_version=${point_version%%.*}

  fi

  min_version="$1"

  min_major_version=${min_version%%.*}

  min_minor_version="0"

  min_point_version="0"

  if test "${min_version#*.}" != "${min_version}"; then

    min_minor_version=${min_version#*.}

    min_minor_version=${min_minor_version%%.*}

  fi

  if test "${min_version#*.*.}" != "${min_version}"; then

    min_point_version=${min_version#*.*.}

    min_point_version=${min_point_version%%.*}

  fi

  max_version="$2"

  max_major_version=${max_version%%.*}

  max_minor_version="0"

  max_point_version="0"

  if test "${max_version#*.}" != "${max_version}"; then

    max_minor_version=${max_version#*.}

    max_minor_version=${max_minor_version%%.*}

  fi

  if test "${max_version#*.*.}" != "${max_version}"; then

    max_point_version=${max_version#*.*.}

    max_point_version=${max_point_version%%.*}

  fi

  test $(($major_version)) -lt $(($min_major_version)) && exit 1

  if test $(($major_version)) -eq $(($min_major_version)); then

    test $(($minor_version)) -lt $(($min_minor_version)) && exit 1

    if test $(($minor_version)) -eq $(($min_minor_version)); then

      test $(($point_version)) -lt $(($min_point_version)) && exit 1

    fi

  fi

  test $(($major_version)) -gt $(($max_major_version)) && exit 1

  if test $(($major_version)) -eq $(($max_major_version)); then

    test $(($minor_version)) -gt $(($max_minor_version)) && exit 1

    if test $(($minor_version)) -eq $(($max_minor_version)); then

      test $(($point_version)) -gt $(($max_point_version)) && exit 1

    fi

  fi

  exit 0

}

# Show the usage line when no arguments are specified.

if test $# -eq 0; then

  show_usage

  exit 1

fi

while test $# -gt 0; do

  case $1 in

    --usage)          show_usage;         exit 0;;

    --help)           show_help;          exit 0;;

    # Installation overrides

    --prefix=*)       GTEST_PREFIX=${1#--prefix=};;

    --exec-prefix=*)  GTEST_EXEC_PREFIX=${1#--exec-prefix=};;

    --libdir=*)       GTEST_LIBDIR=${1#--libdir=};;

    --includedir=*)   GTEST_INCLUDEDIR=${1#--includedir=};;

    # Installation queries

    --prefix|--exec-prefix|--libdir|--includedir|--version)

      if test -n "${do_query}"; then

        show_usage

        exit 1

      fi

      do_query=${1#--}

      ;;

    # Version checking

    --min-version=*)

      do_check_versions=yes

      min_version=${1#--min-version=}

      ;;

    --max-version=*)

      do_check_versions=yes

      max_version=${1#--max-version=}

      ;;

    --exact-version=*)

      do_check_versions=yes

      exact_version=${1#--exact-version=}

      ;;

    # Compiler flag output

    --cppflags)       echo_cppflags=yes;;

    --cxxflags)       echo_cxxflags=yes;;

    --ldflags)        echo_ldflags=yes;;

    --libs)           echo_libs=yes;;

    # Everything else is an error

    *)                show_usage;         exit 1;;

  esac

  shift

done

# These have defaults filled in by the configure script but can also be

# overridden by environment variables or command line parameters.

prefix="${GTEST_PREFIX:-@prefix@}"

exec_prefix="${GTEST_EXEC_PREFIX:-@exec_prefix@}"

libdir="${GTEST_LIBDIR:-@libdir@}"

includedir="${GTEST_INCLUDEDIR:-@includedir@}"

# We try and detect if our binary is not located at its installed location. If

# it's not, we provide variables pointing to the source and build tree rather

# than to the install tree. This allows building against a just-built gtest

# rather than an installed gtest.

bindir="@bindir@"

this_relative_bindir=`dirname $0`

this_bindir=`cd ${this_relative_bindir}; pwd -P`

if test "${this_bindir}" = "${this_bindir%${bindir}}"; then

  # The path to the script doesn't end in the bindir sequence from Autoconf,

  # assume that we are in a build tree.

  build_dir=`dirname ${this_bindir}`

  src_dir=`cd ${this_bindir}; cd @top_srcdir@; pwd -P`

  # TODO(chandlerc@google.com): This is a dangerous dependency on libtool, we

  # should work to remove it, and/or remove libtool altogether, replacing it

  # with direct references to the library and a link path.

  gtest_libs="${build_dir}/lib/libgtest.la @PTHREAD_CFLAGS@ @PTHREAD_LIBS@"

  gtest_ldflags=""

  # We provide hooks to include from either the source or build dir, where the

  # build dir is always preferred. This will potentially allow us to write

  # build rules for generated headers and have them automatically be preferred

  # over provided versions.

  gtest_cppflags="-I${build_dir}/include -I${src_dir}/include"

  gtest_cxxflags="@PTHREAD_CFLAGS@"

else

  # We're using an installed gtest, although it may be staged under some

  # prefix. Assume (as our own libraries do) that we can resolve the prefix,

  # and are present in the dynamic link paths.

  gtest_ldflags="-L${libdir}"

  gtest_libs="-l${name} @PTHREAD_CFLAGS@ @PTHREAD_LIBS@"

  gtest_cppflags="-I${includedir}"

  gtest_cxxflags="@PTHREAD_CFLAGS@"

fi

# Do an installation query if requested.

if test -n "$do_query"; then

  case $do_query in

    prefix)           echo $prefix;       exit 0;;

    exec-prefix)      echo $exec_prefix;  exit 0;;

    libdir)           echo $libdir;       exit 0;;

    includedir)       echo $includedir;   exit 0;;

    version)          echo $version;      exit 0;;

    *)                show_usage;         exit 1;;

  esac

fi

# Do a version check if requested.

if test "$do_check_versions" = "yes"; then

  # Make sure we didn't receive a bad combination of parameters.

  test "$echo_cppflags" = "yes" && show_usage && exit 1

  test "$echo_cxxflags" = "yes" && show_usage && exit 1

  test "$echo_ldflags" = "yes"  && show_usage && exit 1

  test "$echo_libs" = "yes"     && show_usage && exit 1

  if test "$exact_version" != ""; then

    check_versions $exact_version $exact_version

    # unreachable

  else

    check_versions ${min_version:-0.0.0} ${max_version:-9999.9999.9999}

    # unreachable

  fi

fi

# Do the output in the correct order so that these can be used in-line of

# a compiler invocation.

output=""

test "$echo_cppflags" = "yes" && output="$output $gtest_cppflags"

test "$echo_cxxflags" = "yes" && output="$output $gtest_cxxflags"

test "$echo_ldflags" = "yes"  && output="$output $gtest_ldflags"

test "$echo_libs" = "yes"     && output="$output $gtest_libs"

echo $output

exit 0