test: allow use of system gmock/gtest libs

Some systems provide prebuilt copies of gmock/gtest (such as Chromium
OS).  Add a configure flag so they can take advantage of that.  This
allows for a smaller checkout as they don't need to include the full
testing/ tree.

BUG=chromium:579384
TEST=`make check` passes w/--enable-system-test-libs
TEST=`make check` passes w/--disable-system-test-libs
R=thestig@chromium.org

Review URL: https://codereview.chromium.org/1638653002 .

1 files changed, 256 insertions, 1 deletions

diff --git a/configure b/configure
index 196cb2cc..9304e53f 100755
--- a/configure
+++ b/configure
@@ -628,6 +628,14 @@ LTLIBOBJS
 LIBOBJS
 SELFTEST_FALSE
 SELFTEST_TRUE
+GTEST_LIBS
+GTEST_CFLAGS
+GTEST_CONFIG
+GMOCK_LIBS
+GMOCK_CFLAGS
+GMOCK_CONFIG
+SYSTEM_TEST_LIBS_FALSE
+SYSTEM_TEST_LIBS_TRUE
 DISABLE_TOOLS_FALSE
 DISABLE_TOOLS_TRUE
 DISABLE_PROCESSOR_FALSE
@@ -763,6 +771,7 @@ enable_m32
 enable_largefile
 enable_processor
 enable_tools
+enable_system_test_libs
 enable_selftest
 '
       ac_precious_vars='build_alias
@@ -778,7 +787,13 @@ CCASFLAGS
 CPP
 CXX
 CXXFLAGS
-CCC'
+CCC
+GMOCK_CONFIG
+GMOCK_CFLAGS
+GMOCK_LIBS
+GTEST_CONFIG
+GTEST_CFLAGS
+GTEST_LIBS'
 
 
 # Initialize some variables set by options.
@@ -1410,6 +1425,9 @@ Optional Features:
   --disable-largefile     omit support for large files
   --disable-processor     Don't build processor library (default is no)
   --disable-tools         Don't build tool binaries (default is no)
+  --enable-system-test-libs
+                          Use gtest/gmock/etc... from the system instead of
+                          the local copies (default is local)
   --enable-selftest       Run extra tests with "make check" (may conflict with
                           optimizations) (default is no)
 
@@ -1426,6 +1444,16 @@ Some influential environment variables:
   CPP         C preprocessor
   CXX         C++ compiler command
   CXXFLAGS    C++ compiler flags
+  GMOCK_CONFIG
+              Path to gmock-config script
+  GMOCK_CFLAGS
+              Compiler flags for gmock
+  GMOCK_LIBS  Linker flags for gmock
+  GTEST_CONFIG
+              Path to gtest-config script
+  GTEST_CFLAGS
+              Compiler flags for gtest
+  GTEST_LIBS  Linker flags for gtest
 
 Use these variables to override the choices made by `configure' or to help
 it to find libraries and programs with nonstandard names/locations.
@@ -7453,6 +7481,229 @@ if test x$LINUX_HOST = xfalse -a x$disable_processor = xtrue -a x$disable_tools
    as_fn_error $? "--disable-processor and --disable-tools were specified, and not building for Linux. Nothing to build!" "$LINENO" 5
 fi
 
+# Check whether --enable-system-test-libs was given.
+if test "${enable_system_test_libs+set}" = set; then :
+  enableval=$enable_system_test_libs; case "${enableval}" in
+                 yes)
+                   system_test_libs=true
+                   ;;
+                 no)
+                   system_test_libs=false
+                   ;;
+                 *)
+                   as_fn_error $? "bad value ${enableval} for --enable-system-test-libs" "$LINENO" 5
+                   ;;
+               esac
+else
+  system_test_libs=false
+fi
+
+ if test x$system_test_libs = xtrue; then
+  SYSTEM_TEST_LIBS_TRUE=
+  SYSTEM_TEST_LIBS_FALSE='#'
+else
+  SYSTEM_TEST_LIBS_TRUE='#'
+  SYSTEM_TEST_LIBS_FALSE=
+fi
+
+
+
+
+
+
+
+
+if test x$system_test_libs = xtrue; then
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gmock-config", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gmock-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_GMOCK_CONFIG+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$GMOCK_CONFIG"; then
+  ac_cv_prog_GMOCK_CONFIG="$GMOCK_CONFIG" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_GMOCK_CONFIG="${ac_tool_prefix}gmock-config"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+GMOCK_CONFIG=$ac_cv_prog_GMOCK_CONFIG
+if test -n "$GMOCK_CONFIG"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $GMOCK_CONFIG" >&5
+$as_echo "$GMOCK_CONFIG" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_GMOCK_CONFIG"; then
+  ac_ct_GMOCK_CONFIG=$GMOCK_CONFIG
+  # Extract the first word of "gmock-config", so it can be a program name with args.
+set dummy gmock-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_GMOCK_CONFIG+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_GMOCK_CONFIG"; then
+  ac_cv_prog_ac_ct_GMOCK_CONFIG="$ac_ct_GMOCK_CONFIG" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_GMOCK_CONFIG="gmock-config"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_GMOCK_CONFIG=$ac_cv_prog_ac_ct_GMOCK_CONFIG
+if test -n "$ac_ct_GMOCK_CONFIG"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_GMOCK_CONFIG" >&5
+$as_echo "$ac_ct_GMOCK_CONFIG" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_GMOCK_CONFIG" = x; then
+    GMOCK_CONFIG=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    GMOCK_CONFIG=$ac_ct_GMOCK_CONFIG
+  fi
+else
+  GMOCK_CONFIG="$ac_cv_prog_GMOCK_CONFIG"
+fi
+
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gtest-config", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gtest-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_GTEST_CONFIG+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$GTEST_CONFIG"; then
+  ac_cv_prog_GTEST_CONFIG="$GTEST_CONFIG" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_GTEST_CONFIG="${ac_tool_prefix}gtest-config"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+GTEST_CONFIG=$ac_cv_prog_GTEST_CONFIG
+if test -n "$GTEST_CONFIG"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $GTEST_CONFIG" >&5
+$as_echo "$GTEST_CONFIG" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+fi
+if test -z "$ac_cv_prog_GTEST_CONFIG"; then
+  ac_ct_GTEST_CONFIG=$GTEST_CONFIG
+  # Extract the first word of "gtest-config", so it can be a program name with args.
+set dummy gtest-config; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_prog_ac_ct_GTEST_CONFIG+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  if test -n "$ac_ct_GTEST_CONFIG"; then
+  ac_cv_prog_ac_ct_GTEST_CONFIG="$ac_ct_GTEST_CONFIG" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_GTEST_CONFIG="gtest-config"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+fi
+fi
+ac_ct_GTEST_CONFIG=$ac_cv_prog_ac_ct_GTEST_CONFIG
+if test -n "$ac_ct_GTEST_CONFIG"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_GTEST_CONFIG" >&5
+$as_echo "$ac_ct_GTEST_CONFIG" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+  if test "x$ac_ct_GTEST_CONFIG" = x; then
+    GTEST_CONFIG=""
+  else
+    case $cross_compiling:$ac_tool_warned in
+yes:)
+{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
+$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
+ac_tool_warned=yes ;;
+esac
+    GTEST_CONFIG=$ac_ct_GTEST_CONFIG
+  fi
+else
+  GTEST_CONFIG="$ac_cv_prog_GTEST_CONFIG"
+fi
+
+  GMOCK_CFLAGS=`$GMOCK_CONFIG --cppflags --cxxflags`
+  GMOCK_LIBS=`$GMOCK_CONFIG --ldflags --libs`
+  GTEST_CFLAGS=`$GTEST_CONFIG --cppflags --cxxflags`
+  GTEST_LIBS=`$GTEST_CONFIG --ldflags --libs`
+fi
+
 # Check whether --enable-selftest was given.
 if test "${enable_selftest+set}" = set; then :
   enableval=$enable_selftest; case "${enableval}" in
@@ -7650,6 +7901,10 @@ if test -z "${DISABLE_TOOLS_TRUE}" && test -z "${DISABLE_TOOLS_FALSE}"; then
   as_fn_error $? "conditional \"DISABLE_TOOLS\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${SYSTEM_TEST_LIBS_TRUE}" && test -z "${SYSTEM_TEST_LIBS_FALSE}"; then
+  as_fn_error $? "conditional \"SYSTEM_TEST_LIBS\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 if test -z "${SELFTEST_TRUE}" && test -z "${SELFTEST_FALSE}"; then
   as_fn_error $? "conditional \"SELFTEST\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5