1#!/bin/sh
2
3# These variables are automatically filled in by the configure script.
4name="@PACKAGE_TARNAME@"
5version="@PACKAGE_VERSION@"
6
7show_usage()
8{
9  echo "Usage: gmock-config [OPTIONS...]"
10}
11
12show_help()
13{
14  show_usage
15  cat <<\EOF
16
17The `gmock-config' script provides access to the necessary compile and linking
18flags to connect with Google C++ Mocking Framework, both in a build prior to
19installation, and on the system proper after installation. The installation
20overrides may be issued in combination with any other queries, but will only
21affect installation queries if called on a built but not installed gmock. The
22installation queries may not be issued with any other types of queries, and
23only one installation query may be made at a time. The version queries and
24compiler flag queries may be combined as desired but not mixed. Different
25version queries are always combined with logical "and" semantics, and only the
26last of any particular query is used while all previous ones ignored. All
27versions must be specified as a sequence of numbers separated by periods.
28Compiler flag queries output the union of the sets of flags when combined.
29
30 Examples:
31  gmock-config --min-version=1.0 || echo "Insufficient Google Mock version."
32
33  g++ $(gmock-config --cppflags --cxxflags) -o foo.o -c foo.cpp
34  g++ $(gmock-config --ldflags --libs) -o foo foo.o
35
36  # When using a built but not installed Google Mock:
37  g++ $(../../my_gmock_build/scripts/gmock-config ...) ...
38
39  # When using an installed Google Mock, but with installation overrides:
40  export GMOCK_PREFIX="/opt"
41  g++ $(gmock-config --libdir="/opt/lib64" ...) ...
42
43 Help:
44  --usage                    brief usage information
45  --help                     display this help message
46
47 Installation Overrides:
48  --prefix=<dir>             overrides the installation prefix
49  --exec-prefix=<dir>        overrides the executable installation prefix
50  --libdir=<dir>             overrides the library installation prefix
51  --includedir=<dir>         overrides the header file installation prefix
52
53 Installation Queries:
54  --prefix                   installation prefix
55  --exec-prefix              executable installation prefix
56  --libdir                   library installation directory
57  --includedir               header file installation directory
58  --version                  the version of the Google Mock installation
59
60 Version Queries:
61  --min-version=VERSION      return 0 if the version is at least VERSION
62  --exact-version=VERSION    return 0 if the version is exactly VERSION
63  --max-version=VERSION      return 0 if the version is at most VERSION
64
65 Compilation Flag Queries:
66  --cppflags                 compile flags specific to the C-like preprocessors
67  --cxxflags                 compile flags appropriate for C++ programs
68  --ldflags                  linker flags
69  --libs                     libraries for linking
70
71EOF
72}
73
74# This function bounds our version with a min and a max. It uses some clever
75# POSIX-compliant variable expansion to portably do all the work in the shell
76# and avoid any dependency on a particular "sed" or "awk" implementation.
77# Notable is that it will only ever compare the first 3 components of versions.
78# Further components will be cleanly stripped off. All versions must be
79# unadorned, so "v1.0" will *not* work. The minimum version must be in $1, and
80# the max in $2. TODO(chandlerc@google.com): If this ever breaks, we should
81# investigate expanding this via autom4te from AS_VERSION_COMPARE rather than
82# continuing to maintain our own shell version.
83check_versions()
84{
85  major_version=${version%%.*}
86  minor_version="0"
87  point_version="0"
88  if test "${version#*.}" != "${version}"; then
89    minor_version=${version#*.}
90    minor_version=${minor_version%%.*}
91  fi
92  if test "${version#*.*.}" != "${version}"; then
93    point_version=${version#*.*.}
94    point_version=${point_version%%.*}
95  fi
96
97  min_version="$1"
98  min_major_version=${min_version%%.*}
99  min_minor_version="0"
100  min_point_version="0"
101  if test "${min_version#*.}" != "${min_version}"; then
102    min_minor_version=${min_version#*.}
103    min_minor_version=${min_minor_version%%.*}
104  fi
105  if test "${min_version#*.*.}" != "${min_version}"; then
106    min_point_version=${min_version#*.*.}
107    min_point_version=${min_point_version%%.*}
108  fi
109
110  max_version="$2"
111  max_major_version=${max_version%%.*}
112  max_minor_version="0"
113  max_point_version="0"
114  if test "${max_version#*.}" != "${max_version}"; then
115    max_minor_version=${max_version#*.}
116    max_minor_version=${max_minor_version%%.*}
117  fi
118  if test "${max_version#*.*.}" != "${max_version}"; then
119    max_point_version=${max_version#*.*.}
120    max_point_version=${max_point_version%%.*}
121  fi
122
123  test $(($major_version)) -lt $(($min_major_version)) && exit 1
124  if test $(($major_version)) -eq $(($min_major_version)); then
125    test $(($minor_version)) -lt $(($min_minor_version)) && exit 1
126    if test $(($minor_version)) -eq $(($min_minor_version)); then
127      test $(($point_version)) -lt $(($min_point_version)) && exit 1
128    fi
129  fi
130
131  test $(($major_version)) -gt $(($max_major_version)) && exit 1
132  if test $(($major_version)) -eq $(($max_major_version)); then
133    test $(($minor_version)) -gt $(($max_minor_version)) && exit 1
134    if test $(($minor_version)) -eq $(($max_minor_version)); then
135      test $(($point_version)) -gt $(($max_point_version)) && exit 1
136    fi
137  fi
138
139  exit 0
140}
141
142# Show the usage line when no arguments are specified.
143if test $# -eq 0; then
144  show_usage
145  exit 1
146fi
147
148while test $# -gt 0; do
149  case $1 in
150    --usage)          show_usage;         exit 0;;
151    --help)           show_help;          exit 0;;
152
153    # Installation overrides
154    --prefix=*)       GMOCK_PREFIX=${1#--prefix=};;
155    --exec-prefix=*)  GMOCK_EXEC_PREFIX=${1#--exec-prefix=};;
156    --libdir=*)       GMOCK_LIBDIR=${1#--libdir=};;
157    --includedir=*)   GMOCK_INCLUDEDIR=${1#--includedir=};;
158
159    # Installation queries
160    --prefix|--exec-prefix|--libdir|--includedir|--version)
161      if test -n "${do_query}"; then
162        show_usage
163        exit 1
164      fi
165      do_query=${1#--}
166      ;;
167
168    # Version checking
169    --min-version=*)
170      do_check_versions=yes
171      min_version=${1#--min-version=}
172      ;;
173    --max-version=*)
174      do_check_versions=yes
175      max_version=${1#--max-version=}
176      ;;
177    --exact-version=*)
178      do_check_versions=yes
179      exact_version=${1#--exact-version=}
180      ;;
181
182    # Compiler flag output
183    --cppflags)       echo_cppflags=yes;;
184    --cxxflags)       echo_cxxflags=yes;;
185    --ldflags)        echo_ldflags=yes;;
186    --libs)           echo_libs=yes;;
187
188    # Everything else is an error
189    *)                show_usage;         exit 1;;
190  esac
191  shift
192done
193
194# These have defaults filled in by the configure script but can also be
195# overridden by environment variables or command line parameters.
196prefix="${GMOCK_PREFIX:-@prefix@}"
197exec_prefix="${GMOCK_EXEC_PREFIX:-@exec_prefix@}"
198libdir="${GMOCK_LIBDIR:-@libdir@}"
199includedir="${GMOCK_INCLUDEDIR:-@includedir@}"
200
201# We try and detect if our binary is not located at its installed location. If
202# it's not, we provide variables pointing to the source and build tree rather
203# than to the install tree. We also locate Google Test using the configured
204# gtest-config script rather than searching the PATH and our bindir for one.
205# This allows building against a just-built gmock rather than an installed
206# gmock.
207bindir="@bindir@"
208this_relative_bindir=`dirname $0`
209this_bindir=`cd ${this_relative_bindir}; pwd -P`
210if test "${this_bindir}" = "${this_bindir%${bindir}}"; then
211  # The path to the script doesn't end in the bindir sequence from Autoconf,
212  # assume that we are in a build tree.
213  build_dir=`dirname ${this_bindir}`
214  src_dir=`cd ${this_bindir}/@top_srcdir@; pwd -P`
215
216  # TODO(chandlerc@google.com): This is a dangerous dependency on libtool, we
217  # should work to remove it, and/or remove libtool altogether, replacing it
218  # with direct references to the library and a link path.
219  gmock_libs="${build_dir}/lib/libgmock.la"
220  gmock_ldflags=""
221
222  # We provide hooks to include from either the source or build dir, where the
223  # build dir is always preferred. This will potentially allow us to write
224  # build rules for generated headers and have them automatically be preferred
225  # over provided versions.
226  gmock_cppflags="-I${build_dir}/include -I${src_dir}/include"
227  gmock_cxxflags=""
228
229  # Directly invoke the gtest-config script used during the build process.
230  gtest_config="@GTEST_CONFIG@"
231else
232  # We're using an installed gmock, although it may be staged under some
233  # prefix. Assume (as our own libraries do) that we can resolve the prefix,
234  # and are present in the dynamic link paths.
235  gmock_ldflags="-L${libdir}"
236  gmock_libs="-l${name}"
237  gmock_cppflags="-I${includedir}"
238  gmock_cxxflags=""
239
240  # We also prefer any gtest-config script installed in our prefix. Lacking
241  # one, we look in the PATH for one.
242  gtest_config="${bindir}/gtest-config"
243  if test ! -x "${gtest_config}"; then
244    gtest_config=`which gtest-config`
245  fi
246fi
247
248# Ensure that we have located a Google Test to link against.
249if ! test -x "${gtest_config}"; then
250  echo "Unable to locate Google Test, check your Google Mock configuration" \
251       "and installation" >&2
252  exit 1
253elif ! "${gtest_config}" "--exact-version=@GTEST_VERSION@"; then
254  echo "The Google Test found is not the same version as Google Mock was " \
255       "built against" >&2
256  exit 1
257fi
258
259# Add the necessary Google Test bits into the various flag variables
260gmock_cppflags="${gmock_cppflags} `${gtest_config} --cppflags`"
261gmock_cxxflags="${gmock_cxxflags} `${gtest_config} --cxxflags`"
262gmock_ldflags="${gmock_ldflags} `${gtest_config} --ldflags`"
263gmock_libs="${gmock_libs} `${gtest_config} --libs`"
264
265# Do an installation query if requested.
266if test -n "$do_query"; then
267  case $do_query in
268    prefix)           echo $prefix;       exit 0;;
269    exec-prefix)      echo $exec_prefix;  exit 0;;
270    libdir)           echo $libdir;       exit 0;;
271    includedir)       echo $includedir;   exit 0;;
272    version)          echo $version;      exit 0;;
273    *)                show_usage;         exit 1;;
274  esac
275fi
276
277# Do a version check if requested.
278if test "$do_check_versions" = "yes"; then
279  # Make sure we didn't receive a bad combination of parameters.
280  test "$echo_cppflags" = "yes" && show_usage && exit 1
281  test "$echo_cxxflags" = "yes" && show_usage && exit 1
282  test "$echo_ldflags" = "yes"  && show_usage && exit 1
283  test "$echo_libs" = "yes"     && show_usage && exit 1
284
285  if test "$exact_version" != ""; then
286    check_versions $exact_version $exact_version
287    # unreachable
288  else
289    check_versions ${min_version:-0.0.0} ${max_version:-9999.9999.9999}
290    # unreachable
291  fi
292fi
293
294# Do the output in the correct order so that these can be used in-line of
295# a compiler invocation.
296output=""
297test "$echo_cppflags" = "yes" && output="$output $gmock_cppflags"
298test "$echo_cxxflags" = "yes" && output="$output $gmock_cxxflags"
299test "$echo_ldflags" = "yes"  && output="$output $gmock_ldflags"
300test "$echo_libs" = "yes"     && output="$output $gmock_libs"
301echo $output
302
303exit 0
304