ceph/src/googletest/googletest/m4/gtest.m4

   1 dnl GTEST_LIB_CHECK([minimum version [,
   2 dnl                  action if found [,action if not found]]])
   3 dnl
   4 dnl Check for the presence of the Google Test library, optionally at a minimum
   5 dnl version, and indicate a viable version with the HAVE_GTEST flag. It defines
   6 dnl standard variables for substitution including GTEST_CPPFLAGS,
   7 dnl GTEST_CXXFLAGS, GTEST_LDFLAGS, and GTEST_LIBS. It also defines
   8 dnl GTEST_VERSION as the version of Google Test found. Finally, it provides
   9 dnl optional custom action slots in the event GTEST is found or not.
  10 AC_DEFUN([GTEST_LIB_CHECK],
  11 [
  12 dnl Provide a flag to enable or disable Google Test usage.
  13 AC_ARG_ENABLE([gtest],
  14   [AS_HELP_STRING([--enable-gtest],
  15                   [Enable tests using the Google C++ Testing Framework.
  16                   (Default is enabled.)])],
  17   [],
  18   [enable_gtest=])
  19 AC_ARG_VAR([GTEST_CONFIG],
  20            [The exact path of Google Test's 'gtest-config' script.])
  21 AC_ARG_VAR([GTEST_CPPFLAGS],
  22            [C-like preprocessor flags for Google Test.])
  23 AC_ARG_VAR([GTEST_CXXFLAGS],
  24            [C++ compile flags for Google Test.])
  25 AC_ARG_VAR([GTEST_LDFLAGS],
  26            [Linker path and option flags for Google Test.])
  27 AC_ARG_VAR([GTEST_LIBS],
  28            [Library linking flags for Google Test.])
  29 AC_ARG_VAR([GTEST_VERSION],
  30            [The version of Google Test available.])
  31 HAVE_GTEST="no"
  32 AS_IF([test "x${enable_gtest}" != "xno"],
  33   [AC_MSG_CHECKING([for 'gtest-config'])
  34    AS_IF([test "x${enable_gtest}" != "xyes"],
  35      [AS_IF([test -x "${enable_gtest}/scripts/gtest-config"],
  36         [GTEST_CONFIG="${enable_gtest}/scripts/gtest-config"],
  37         [GTEST_CONFIG="${enable_gtest}/bin/gtest-config"])
  38       AS_IF([test -x "${GTEST_CONFIG}"], [],
  39         [AC_MSG_RESULT([no])
  40          AC_MSG_ERROR([dnl
  41 Unable to locate either a built or installed Google Test.
  42 The specific location '${enable_gtest}' was provided for a built or installed
  43 Google Test, but no 'gtest-config' script could be found at this location.])
  44          ])],
  45      [AC_PATH_PROG([GTEST_CONFIG], [gtest-config])])
  46    AS_IF([test -x "${GTEST_CONFIG}"],
  47      [AC_MSG_RESULT([${GTEST_CONFIG}])
  48       m4_ifval([$1],
  49         [_gtest_min_version="--min-version=$1"
  50          AC_MSG_CHECKING([for Google Test at least version >= $1])],
  51         [_gtest_min_version="--min-version=0"
  52          AC_MSG_CHECKING([for Google Test])])
  53       AS_IF([${GTEST_CONFIG} ${_gtest_min_version}],
  54         [AC_MSG_RESULT([yes])
  55          HAVE_GTEST='yes'],
  56         [AC_MSG_RESULT([no])])],
  57      [AC_MSG_RESULT([no])])
  58    AS_IF([test "x${HAVE_GTEST}" = "xyes"],
  59      [GTEST_CPPFLAGS=`${GTEST_CONFIG} --cppflags`
  60       GTEST_CXXFLAGS=`${GTEST_CONFIG} --cxxflags`
  61       GTEST_LDFLAGS=`${GTEST_CONFIG} --ldflags`
  62       GTEST_LIBS=`${GTEST_CONFIG} --libs`
  63       GTEST_VERSION=`${GTEST_CONFIG} --version`
  64       AC_DEFINE([HAVE_GTEST],[1],[Defined when Google Test is available.])],
  65      [AS_IF([test "x${enable_gtest}" = "xyes"],
  66         [AC_MSG_ERROR([dnl
  67 Google Test was enabled, but no viable version could be found.])
  68          ])])])
  69 AC_SUBST([HAVE_GTEST])
  70 AM_CONDITIONAL([HAVE_GTEST],[test "x$HAVE_GTEST" = "xyes"])
  71 AS_IF([test "x$HAVE_GTEST" = "xyes"],
  72   [m4_ifval([$2], [$2])],
  73   [m4_ifval([$3], [$3])])
  74 ])