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A small re-work of the installed m4 script for Google Test. This

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allows other projects to easily leverage an installation or
un-installed build of Google Test from their project's Autoconf
script. This re-work specifically introduces the ability to provide a
path as an argument to the resulting configure script option which can
specify either an installation prefix or a build directory for Google
Test.

This change also makes a small portability tweak by using ``s instead
of $() for command expansion.

By Chandler Carruth.  Reviewed by Benoit Sigoure.
This commit is contained in:
shiqian 2008-12-10 18:27:39 +00:00
parent a369436e2a
commit 7b3b36fde4
1 changed files with 38 additions and 25 deletions
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63
m4/gtest.m4
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@ -12,10 +12,10 @@ AC_DEFUN([GTEST_LIB_CHECK],
dnl Provide a flag to enable or disable Google Test usage.
AC_ARG_ENABLE([gtest],
[AS_HELP_STRING([--enable-gtest],
[Enable tests using the Google C++ Testing Framework.]
[(Default is enabled.)])],
[Enable tests using the Google C++ Testing Framework.
(Default is enabled.)])],
[],
[enable_gtest=check])
[enable_gtest=])
AC_ARG_VAR([GTEST_CONFIG],
[The exact path of Google Test's 'gtest-config' script.])
AC_ARG_VAR([GTEST_CPPFLAGS],
@ -29,33 +29,46 @@ AC_ARG_VAR([GTEST_LIBS],
AC_ARG_VAR([GTEST_VERSION],
[The version of Google Test available.])
HAVE_GTEST="no"
AS_IF([test "x$enable_gtest" != "xno"],
[AC_PATH_PROG([GTEST_CONFIG], [gtest-config])
AS_IF([test -x "$GTEST_CONFIG"],
[AS_IF([test "x$1" != "x"],
[_min_version="--min-version=$1"
AS_IF([test "x${enable_gtest}" != "xno"],
[AC_MSG_CHECKING([for 'gtest-config'])
AS_IF([test "x${enable_gtest}" != "xyes"],
[AS_IF([test -x "${enable_gtest}/scripts/gtest-config"],
[GTEST_CONFIG="${enable_gtest}/scripts/gtest-config"],
[GTEST_CONFIG="${enable_gtest}/bin/gtest-config"])
AS_IF([test -x "${GTEST_CONFIG}"], [],
[AC_MSG_RESULT([no])
AC_MSG_ERROR([dnl
Unable to locate either a built or installed Google Test.
The specific location '${enable_gtest}' was provided for a built or installed
Google Test, but no 'gtest-config' script could be found at this location.])
])],
[AC_PATH_PROG([GTEST_CONFIG], [gtest-config])])
AS_IF([test -x "${GTEST_CONFIG}"],
[AC_MSG_RESULT([${GTEST_CONFIG}])
m4_ifval([$1],
[_gtest_min_version="--min-version=$1"
AC_MSG_CHECKING([for Google Test at least version >= $1])],
[_min_version="--min-version=0"
[_gtest_min_version="--min-version=0"
AC_MSG_CHECKING([for Google Test])])
AS_IF([$GTEST_CONFIG $_min_version],
AS_IF([${GTEST_CONFIG} ${_gtest_min_version}],
[AC_MSG_RESULT([yes])
HAVE_GTEST="yes"],
[AC_MSG_RESULT([no])])])
AS_IF([test "x$HAVE_GTEST" = "xyes"],
[GTEST_CPPFLAGS=$($GTEST_CONFIG --cppflags)
GTEST_CXXFLAGS=$($GTEST_CONFIG --cxxflags)
GTEST_LDFLAGS=$($GTEST_CONFIG --ldflags)
GTEST_LIBS=$($GTEST_CONFIG --libs)
GTEST_VERSION=$($GTEST_CONFIG --version)
HAVE_GTEST='yes'],
[AC_MSG_RESULT([no])])],
[AC_MSG_RESULT([no])])
AS_IF([test "x${HAVE_GTEST}" = "xyes"],
[GTEST_CPPFLAGS=`${GTEST_CONFIG} --cppflags`
GTEST_CXXFLAGS=`${GTEST_CONFIG} --cxxflags`
GTEST_LDFLAGS=`${GTEST_CONFIG} --ldflags`
GTEST_LIBS=`${GTEST_CONFIG} --libs`
GTEST_VERSION=`${GTEST_CONFIG} --version`
AC_DEFINE([HAVE_GTEST],[1],[Defined when Google Test is available.])],
[AS_IF([test "x$enable_gtest" = "xyes"],
[AC_MSG_ERROR([
The Google C++ Testing Framework was explicitly enabled, but a viable version
could not be found on the system.
])])])])
[AS_IF([test "x${enable_gtest}" = "xyes"],
[AC_MSG_ERROR([dnl
Google Test was enabled, but no viable version could be found.])
])])])
AC_SUBST([HAVE_GTEST])
AM_CONDITIONAL([HAVE_GTEST],[test "x$HAVE_GTEST" = "xyes"])
AS_IF([test "x$HAVE_GTEST" = "xyes"],
[AS_IF([test "x$2" != "x"],[$2],[:])],
[AS_IF([test "x$3" != "x"],[$3],[:])])
[m4_ifval([$2], [$2])],
[m4_ifval([$3], [$3])])
])