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# Copyright (C) 2002-2014 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3. If not see
# <http://www.gnu.org/licenses/>.
#
# This file was written by Janis Johnson, <janis187@us.ibm.com>
# Test interoperability of two compilers that follow the same ABI.
#
# Break simple tests into two pieces and see that they work when linked
# together. If an alternate compiler is specified then the two main
# pieces of each test are compiled with different compilers. The
# alternate compiler must be installed, and is specified by defining
# ALT_CXX_UNDER_TEST in the environment.
if $tracelevel then {
strace $tracelevel
}
global GXX_UNDER_TEST
global ld_library_path
# Load procedures from common libraries.
load_lib standard.exp
load_lib g++.exp
load_lib target-libpath.exp
#
# compat-use-alt-compiler -- make the alternate compiler the default
#
proc compat-use-alt-compiler { } {
global GXX_UNDER_TEST ALT_CXX_UNDER_TEST
global CXXFLAGS
global ALWAYS_CXXFLAGS
global ld_library_path alt_ld_library_path
global same_alt
# We don't need to do this if the alternate compiler is actually
# the same as the compiler under test.
if { $same_alt == 0 } then {
set GXX_UNDER_TEST $ALT_CXX_UNDER_TEST
set CXXFLAGS ""
set ALWAYS_CXXFLAGS ""
set ld_library_path $alt_ld_library_path
set_ld_library_path_env_vars
}
}
#
# compat-use-tst-compiler -- make compiler under test the default
#
proc compat-use-tst-compiler { } {
global GXX_UNDER_TEST save_gxx_under_test
global CXXFLAGS save_cxxflags
global ALWAYS_CXXFLAGS save_always_cxxflags
global ld_library_path save_ld_library_path
global same_alt
# We don't need to do this if the alternate compiler is actually
# the same as the compiler under test.
if { $same_alt == 0 } then {
set GXX_UNDER_TEST $save_gxx_under_test
set CXXFLAGS $save_cxxflags
set ALWAYS_CXXFLAGS $save_always_cxxflags
set ld_library_path $save_ld_library_path
set_ld_library_path_env_vars
}
}
# Load the language-independent compabibility support procedures.
# This must be done after the compat-use-*-compiler definitions.
load_lib compat.exp
g++_init
# Save variables for the C++ compiler under test, which each test will
# change a couple of times. This must be done after calling g++-init.
set save_gxx_under_test $GXX_UNDER_TEST
set save_cxxflags $CXXFLAGS
set save_always_cxxflags $ALWAYS_CXXFLAGS
set save_ld_library_path $ld_library_path
# Define an identifier for use with this suite to avoid name conflicts
# with other compat tests running at the same time.
set sid "cp_compat"
# Find out whether there is an alternate compiler to test. If the
# variable is defined but is set to "same", that means we use the same
# compiler twice, which is meaningful if the two parts of COMPAT_OPTIONS
# are different.
set use_alt 0
set same_alt 0
set alt_ld_library_path "."
if [info exists ALT_CXX_UNDER_TEST] then {
set use_alt 1
if [string match "same" $ALT_CXX_UNDER_TEST] then {
set same_alt 1
} else {
if [info exists ALT_LD_LIBRARY_PATH] then {
append alt_ld_library_path ":${ALT_LD_LIBRARY_PATH}"
}
}
}
# Main loop.
foreach src [lsort [find $srcdir/$subdir *_main.C]] {
# If we're only testing specific files and this isn't one of them, skip it.
if ![runtest_file_p $runtests $src] then {
continue
}
compat-execute $src $sid $use_alt
}
# Restore the original compiler under test.
compat-use-tst-compiler
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