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# Expect script for ld-auto-import tests
# Copyright (C) 2002-2018 Free Software Foundation, Inc.
#
# This file is part of the GNU Binutils.
#
# 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
# MA 02110-1301, USA.
#
# Written by Ralf.Habacker@freenet.de
# Based on ls-shared/shared.exp by Ian Lance Taylor (ian@cygnus.com)
#
# Note:
#
# This script tests some auto-import functionality:
#
# A. "auto importing direct from a dll" functionality, which dramatically reduces the
# linking time for big libraries and applications by skipping creating/using
# import libraries. Instead it links directly to the related dll or to a symlinked
# dll for replacing regular import libraries. The test has 6 stages:
#
# 1. compile and link a test dll exporting some text and data symbols and a
# standard import library
#
# 2. create a symbolic link to this dll to simulate a replaced import library.
#
# 3. compile and link a client application with the standard import library.
# This should produce no errors.
#
# 4. compile and link a client application with the created dll.
# This should also produce no errors.
#
# 5. compile and link a client application using the "import library".
# This should also produce no errors.
#
# 6. compile and link a client application with auto-import disabled.
# This should produce a linking error.
#
# B. runtime check if there are no segfaults when importing const data variables
#
# This test can only be run if ld generates native executables.
if ![isnative] then {return}
# This test can only be run on a couple of platforms.
# Square bracket expressions seem to confuse istarget.
if { ![istarget *-pc-cygwin]
&& ![istarget *-pc-mingw*] } {
return
}
if [istarget *-pc-mingw*] {
# FIXME: Add support for this target.
unsupported "mingw currently not supported"
}
# No compiler, no test.
if { [which $CC] == 0 } {
untested "Auto import test (compiler not found)"
return
}
# ld_special_link
# link a program using ld, without including any libraries
#
proc ld_special_link { ld target objects } {
global host_triplet
global link_output
if { [which $ld] == 0 } then {
perror "$ld does not exist"
return 0
}
if [is_endian_output_format $objects] then {
set flags [big_or_little_endian]
} else {
set flags ""
}
verbose -log "$ld $flags -o $target $objects"
catch "exec $ld $flags -o $target $objects" link_output
set exec_output [prune_warnings $link_output]
# We don't care if we get a warning about a non-existent start
# symbol, since the default linker script might use ENTRY.
regsub -all "(^|\n)(\[^\n\]*: warning: cannot find entry symbol\[^\n\]*\n?)" $exec_output "\\1" exec_output
# We don't care if we get a message about creating a library file.
regsub -all "(^|\n)(Creating library file\[^\n\]*\n?)" $exec_output "\\1" exec_output
if [string match "" $exec_output] then {
return 1
}
verbose -log "$exec_output"
return 0
}
set tmpdir tmpdir
set SHCFLAG ""
if [istarget *-pc-cygwin] {
# Set some libs needed for cygwin.
set MYLIBS "-L/usr/lib -lcygwin -L/usr/lib/w32api -lkernel32"
# Compile the dll.
if ![ld_compile "$CC $CFLAGS $SHCFLAG" $srcdir/$subdir/dll.c $tmpdir/dll.o] {
fail "compiling shared lib"
}
if ![ld_special_link "$ld -shared --enable-auto-import -e __cygwin_dll_entry@12 --out-implib=$tmpdir/libstandard.dll.a" $tmpdir/dll.dll "$tmpdir/dll.o $MYLIBS"] {
fail "linking shared lib"
}
# Create symbolic link.
catch "exec ln -fs dll.dll $tmpdir/libsymlinked_dll.dll.a" ln_catch
# Compile and link the client program.
if ![ld_compile "$CC $CFLAGS $SHCFLAG" $srcdir/$subdir/client.c $tmpdir/client.o] {
fail "compiling client"
}
# Check linking with import library.
set msg "linking auto-import client using a standard import library"
if [ld_special_link $ld $tmpdir/client-linklib.exe "--enable-auto-import --enable-runtime-pseudo-reloc /lib/crt0.o $tmpdir/client.o -L$tmpdir -lstandard $MYLIBS"] {
pass $msg
} else {
fail $msg
}
# Check linking directly with dll.
set msg "linking auto-import client using the dll"
if [ld_special_link $ld $tmpdir/client-linkdll.exe "--enable-auto-import --enable-runtime-pseudo-reloc /lib/crt0.o $tmpdir/client.o -L$tmpdir -ldll $MYLIBS"] {
pass $msg
} else {
fail $msg
}
# Check linking with symlinked dll.
set msg "linking auto-import client using symbolic linked dll"
if [ld_special_link $ld $tmpdir/client-symlinkeddll.exe "--enable-auto-import --enable-runtime-pseudo-reloc /lib/crt0.o $tmpdir/client.o -L$tmpdir -lsymlinked_dll $MYLIBS"] {
pass $msg
} else {
fail $msg
}
# Check linking with disabled auto-import, this must produce linking error.
set msg "linking with disabled auto-import"
if ![ld_special_link $ld $tmpdir/client-failed.exe "--disable-auto-import --enable-runtime-pseudo-reloc /lib/crt0.o $tmpdir/client.o -L$tmpdir -ldll $MYLIBS"] {
pass $msg
} else {
fail $msg
}
# Check that the app works - ie that there is output when the applications runs.
set msg "application runtime segfault check"
catch "exec $tmpdir/client-linklib.exe" exec_output
if ![string match "" $exec_output] then {
pass $msg
} else {
fail $msg
}
}
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