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2023-06-16Daily bump.GCC Administrator1-0/+8
2023-06-15configure: Implement --enable-host-pieMarek Polacek3-4/+54
[ This is my third attempt to add this configure option. The first version was approved but it came too late in the development cycle. The second version was also approved, but I had to revert it: <https://gcc.gnu.org/pipermail/gcc-patches/2022-November/607082.html>. I've fixed the problem (by moving $(PICFLAG) from INTERNAL_CFLAGS to ALL_COMPILERFLAGS). Another change is that since r13-4536 I no longer need to touch Makefile.def, so this patch is simplified. ] This patch implements the --enable-host-pie configure option which makes the compiler executables PIE. This can be used to enhance protection against ROP attacks, and can be viewed as part of a wider trend to harden binaries. It is similar to the option --enable-host-shared, except that --e-h-s won't add -shared to the linker flags whereas --e-h-p will add -pie. It is different from --enable-default-pie because that option just adds an implicit -fPIE/-pie when the compiler is invoked, but the compiler itself isn't PIE. Since r12-5768-gfe7c3ecf, PCH works well with PIE, so there are no PCH regressions. When building the compiler, the build process may use various in-tree libraries; these need to be built with -fPIE so that it's possible to use them when building a PIE. For instance, when --with-included-gettext is in effect, intl object files must be compiled with -fPIE. Similarly, when building in-tree gmp, isl, mpfr and mpc, they must be compiled with -fPIE. With this patch and --enable-host-pie used to configure gcc: $ file gcc/cc1{,plus,obj,gm2} gcc/f951 gcc/lto1 gcc/cpp gcc/go1 gcc/rust1 gcc/gnat1 gcc/cc1: ELF 64-bit LSB pie executable, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=98e22cde129d304aa6f33e61b1c39e144aeb135e, for GNU/Linux 3.2.0, with debug_info, not stripped gcc/cc1plus: ELF 64-bit LSB pie executable, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=859d1ea37e43dfe50c18fd4e3dd9a34bb1db8f77, for GNU/Linux 3.2.0, with debug_info, not stripped gcc/cc1obj: ELF 64-bit LSB pie executable, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=1964f8ecee6163182bc26134e2ac1f324816e434, for GNU/Linux 3.2.0, with debug_info, not stripped gcc/cc1gm2: ELF 64-bit LSB pie executable, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=a396672c7ff913d21855829202e7b02ecf42ff4c, for GNU/Linux 3.2.0, with debug_info, not stripped gcc/f951: ELF 64-bit LSB pie executable, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=59c523db893186547ac75c7a71f48be0a461c06b, for GNU/Linux 3.2.0, with debug_info, not stripped gcc/lto1: ELF 64-bit LSB pie executable, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=084a7b77df7be2d63c2d4c655b5bbc3fcdb6038d, for GNU/Linux 3.2.0, with debug_info, not stripped gcc/cpp: ELF 64-bit LSB pie executable, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=3503bf8390d219a10d6653b8560aa21158132168, for GNU/Linux 3.2.0, with debug_info, not stripped gcc/go1: ELF 64-bit LSB pie executable, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=988cc673af4fba5dcb482f4b34957b99050a68c5, for GNU/Linux 3.2.0, with debug_info, not stripped gcc/rust1: ELF 64-bit LSB pie executable, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=b6a5d3d514446c4dcdee0707f086ab9b274a8a3c, for GNU/Linux 3.2.0, with debug_info, not stripped gcc/gnat1: ELF 64-bit LSB pie executable, x86-64, version 1 (GNU/Linux), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, BuildID[sha1]=bb11ccdc2c366fe3fe0980476bcd8ca19b67f9dc, for GNU/Linux 3.2.0, with debug_info, not stripped I plan to add an option to link with -Wl,-z,now. Bootstrapped on x86_64-pc-linux-gnu with --with-included-gettext --enable-host-pie as well as without --enable-host-pie. Also tested on a Debian system where the system gcc was configured with --enable-default-pie. Co-Authored by: Iain Sandoe <iain@sandoe.co.uk> ChangeLog: * configure.ac (--enable-host-pie): New check. Set PICFLAG after this check. * configure: Regenerate. c++tools/ChangeLog: * Makefile.in: Rename PIEFLAG to PICFLAG. Set LD_PICFLAG. Use it. Use pic/libiberty.a if PICFLAG is set. * configure.ac (--enable-default-pie): Set PICFLAG instead of PIEFLAG. (--enable-host-pie): New check. * configure: Regenerate. fixincludes/ChangeLog: * Makefile.in: Set and use PICFLAG and LD_PICFLAG. Use the "pic" build of libiberty if PICFLAG is set. * configure.ac: * configure: Regenerate. gcc/ChangeLog: * Makefile.in: Set LD_PICFLAG. Use it. Set enable_host_pie. Remove NO_PIE_CFLAGS and NO_PIE_FLAG. Pass LD_PICFLAG to ALL_LINKERFLAGS. Use the "pic" build of libiberty if --enable-host-pie. * configure.ac (--enable-host-shared): Don't set PICFLAG here. (--enable-host-pie): New check. Set PICFLAG and LD_PICFLAG after this check. * configure: Regenerate. * doc/install.texi: Document --enable-host-pie. gcc/ada/ChangeLog: * gcc-interface/Make-lang.in (ALL_ADAFLAGS): Remove NO_PIE_CFLAGS. Add PICFLAG. Use PICFLAG when building ada/b_gnat1.o and ada/b_gnatb.o. * gcc-interface/Makefile.in: Use pic/libiberty.a if PICFLAG is set. Remove NO_PIE_FLAG. gcc/m2/ChangeLog: * Make-lang.in: New var, GM2_PICFLAGS. Use it. gcc/d/ChangeLog: * Make-lang.in: Remove NO_PIE_CFLAGS. intl/ChangeLog: * Makefile.in: Use @PICFLAG@ in COMPILE as well. * configure.ac (--enable-host-shared): Don't set PICFLAG here. (--enable-host-pie): New check. Set PICFLAG after this check. * configure: Regenerate. libcody/ChangeLog: * Makefile.in: Pass LD_PICFLAG to LDFLAGS. * configure.ac (--enable-host-shared): Don't set PICFLAG here. (--enable-host-pie): New check. Set PICFLAG and LD_PICFLAG after this check. * configure: Regenerate. libcpp/ChangeLog: * configure.ac (--enable-host-shared): Don't set PICFLAG here. (--enable-host-pie): New check. Set PICFLAG after this check. * configure: Regenerate. libdecnumber/ChangeLog: * configure.ac (--enable-host-shared): Don't set PICFLAG here. (--enable-host-pie): New check. Set PICFLAG after this check. * configure: Regenerate. libiberty/ChangeLog: * configure.ac: Also set shared when enable_host_pie. * configure: Regenerate. zlib/ChangeLog: * configure.ac (--enable-host-shared): Don't set PICFLAG here. (--enable-host-pie): New check. Set PICFLAG after this check. * configure: Regenerate.
2023-01-02Update Copyright year in ChangeLog filesJakub Jelinek1-1/+1
2022 -> 2023
2022-11-24Daily bump.GCC Administrator1-0/+19
2022-11-22Revert "configure: Implement --enable-host-pie"Marek Polacek3-54/+4
This reverts commit 251c72a68af3a8b0638705b73ef120ffdf0053eb.
2022-11-22configure: Implement --enable-host-pieMarek Polacek3-4/+54
This patch implements the --enable-host-pie configure option which makes the compiler executables PIE. This can be used to enhance protection against ROP attacks, and can be viewed as part of a wider trend to harden binaries. It is similar to the option --enable-host-shared, except that --e-h-s won't add -shared to the linker flags whereas --e-h-p will add -pie. It is different from --enable-default-pie because that option just adds an implicit -fPIE/-pie when the compiler is invoked, but the compiler itself isn't PIE. Since r12-5768-gfe7c3ecf, PCH works well with PIE, so there are no PCH regressions. When building the compiler, the build process may use various in-tree libraries; these need to be built with -fPIE so that it's possible to use them when building a PIE. For instance, when --with-included-gettext is in effect, intl object files must be compiled with -fPIE. Similarly, when building in-tree gmp, isl, mpfr and mpc, they must be compiled with -fPIE. I plan to add an option to link with -Wl,-z,now. ChangeLog: * Makefile.def: Pass $(PICFLAG) to AM_CFLAGS for gmp, mpfr, mpc, and isl. * Makefile.in: Regenerate. * Makefile.tpl: Set PICFLAG. * configure.ac (--enable-host-pie): New check. Set PICFLAG after this check. * configure: Regenerate. c++tools/ChangeLog: * Makefile.in: Rename PIEFLAG to PICFLAG. Set LD_PICFLAG. Use it. Use pic/libiberty.a if PICFLAG is set. * configure.ac (--enable-default-pie): Set PICFLAG instead of PIEFLAG. (--enable-host-pie): New check. * configure: Regenerate. fixincludes/ChangeLog: * Makefile.in: Set and use PICFLAG and LD_PICFLAG. Use the "pic" build of libiberty if PICFLAG is set. * configure.ac: * configure: Regenerate. gcc/ChangeLog: * Makefile.in: Set LD_PICFLAG. Use it. Set enable_host_pie. Remove NO_PIE_CFLAGS and NO_PIE_FLAG. Pass LD_PICFLAG to ALL_LINKERFLAGS. Use the "pic" build of libiberty if --enable-host-pie. * configure.ac (--enable-host-shared): Don't set PICFLAG here. (--enable-host-pie): New check. Set PICFLAG and LD_PICFLAG after this check. * configure: Regenerate. * doc/install.texi: Document --enable-host-pie. gcc/d/ChangeLog: * Make-lang.in: Remove NO_PIE_CFLAGS. intl/ChangeLog: * Makefile.in: Use @PICFLAG@ in COMPILE as well. * configure.ac (--enable-host-shared): Don't set PICFLAG here. (--enable-host-pie): New check. Set PICFLAG after this check. * configure: Regenerate. libcody/ChangeLog: * Makefile.in: Pass LD_PICFLAG to LDFLAGS. * configure.ac (--enable-host-shared): Don't set PICFLAG here. (--enable-host-pie): New check. Set PICFLAG and LD_PICFLAG after this check. * configure: Regenerate. libcpp/ChangeLog: * configure.ac (--enable-host-shared): Don't set PICFLAG here. (--enable-host-pie): New check. Set PICFLAG after this check. * configure: Regenerate. libdecnumber/ChangeLog: * configure.ac (--enable-host-shared): Don't set PICFLAG here. (--enable-host-pie): New check. Set PICFLAG after this check. * configure: Regenerate. libiberty/ChangeLog: * configure.ac: Also set shared when enable_host_pie. * configure: Regenerate. zlib/ChangeLog: * configure.ac (--enable-host-shared): Don't set PICFLAG here. (--enable-host-pie): New check. Set PICFLAG after this check. * configure: Regenerate.
2022-06-04Daily bump.GCC Administrator1-0/+5
2022-06-03libcody: fix nonportable shell code in revision.stamp build ruleAlexandre Oliva1-2/+2
Two non-portable shell constructs have been long present in libcody's build rule for revision.stamp: $() instead of ``, and += to append to a shell variable. The former seems to work even when bash is operating as /bin/sh, but += doesn't, and it ends up trying to run revision+=M as a command name, and issuing an error as that command is (hopefully) not found. This patch replaces both constructs with more portable ones. for libcody/ChangeLog * Makefile.in (revision.stamp): Replace $() and += with more portable shell constructs.
2022-03-19Daily bump.GCC Administrator1-0/+5
2022-03-18libcody: Do not use a dummy port number in getaddrinfo().Iain Sandoe1-4/+2
the getaddrinfo() requires either a non-null name for the server or a port service / number. In the code that opens a connection we have been calling this with a dummy port number of "0". Unfortunately this triggers a bug in some BSD versions and OSes importing that code. In this part of the code we do not really need a port number, since it is not reasonable to open a connection to an unspecified host. Setting hints info field to 0, and the servname parm to nullptr works around the BSD bug in this case. Signed-off-by: Iain Sandoe <iain@sandoe.co.uk> libcody/ChangeLog: * netclient.cc (OpenInet6): Do not provide a dummy port number in the getaddrinfo() call.
2022-01-03Update Copyright in ChangeLog filesJakub Jelinek1-1/+1
Do this separately from all other Copyright updates, as ChangeLog files can be modified only separately.
2021-11-02Daily bump.GCC Administrator1-0/+5
2021-11-01libcody: add mostlyclean Makefile targetMartin Liska1-6/+14
PR other/102657 libcody/ChangeLog: * Makefile.in: Add mostlyclean Makefile target.
2021-10-22Daily bump.GCC Administrator1-0/+5
2021-10-21libcody: Avoid double-freeJonathan Wakely1-0/+1
If the listen call fails then 'goto fail' will jump to that label and use freeaddrinfo again. Set the pointer to null to prevent that. libcody/ChangeLog: * netserver.cc (ListenInet6): Set pointer to null after deallocation.
2021-04-07Daily bump.GCC Administrator1-0/+4
2021-04-06libcody: Remove FSF licenseNathan Sidwell1-29/+0
Apparently this was never needed. libcody/ * LICENSE.gcc: Delete.
2021-01-13Daily bump.GCC Administrator1-0/+17
2021-01-12libcody: Simplify configure [PR 98414, 98509]Nathan Sidwell13-6874/+48
Libcody's configurey was overly 'clever'. That didn't play well with GCC's structure. This removes lots of that overengineering, using libcpp as an example. libcody/ * Makefile.in: Remove auto parallelize, swallow Makesub.in. Don't check compiler name here. * Makesub.in: Delete. * build-aux/config.guess: Delete. * build-aux/config.sub: Delete. * build-aux/install-sh: Delete. * dox.cfg.in: Delete. * gdbinit.in: Delete. * internal.hh (BuildNote): Delete. * fatal.cc (BuildNote): Delete. * config.m4: Remove unneeded fns. * configure.ac: Remove unneccessary checks and configures. * configure: Rebuilt. * config.h.in: Rebuilt.
2021-01-07Daily bump.GCC Administrator1-0/+5
2021-01-06Fix libcody build on hppa*-*-hpux11.11.John David Anglin1-1/+3
2021-01-06 John David Anglin <danglin@gcc.gnu.org> libcody/ChangeLog: PR bootstrap/98506 * resolver.cc: Only use fstatat when _POSIX_C_SOURCE >= 200809L.
2021-01-05Daily bump.GCC Administrator1-0/+9
2021-01-04[libcody] Remove some std::move [PR 98368]Nathan Sidwell1-2/+1
Compiling on clang showed a couple of pessimizations. Fixed thusly. libcody/ * client.cc (Client::ProcessResponse): Remove std::move inside ?: c++tools/ * resolver.cc (module_resolver::cmi_response): Remove std::move of temporary.
2021-01-04[libcody] Windows absdir fixMateusz Wajchęprzełóż1-2/+2
An obvious thinko in dirve name check :( libcody/ * resolver.cc (IsAbsDir): Fix string indexing. Signed-off-by: Nathan Sidwell <nathan@acm.org>
2021-01-04Update Copyright in ChangeLog filesJakub Jelinek1-1/+1
Do this separately from all other Copyright updates, as ChangeLog files can be modified only separately.
2020-12-24Daily bump.GCC Administrator1-0/+12
2020-12-23libcody: Remove testsuite [PR 98318]Nathan Sidwell9-440/+1
libcody's testsuite is not very portable, and is testing a host library, so will do weird things on cross compiling, I think. Let's just drop it. libcody/ * Makefile.in (LDFLAGS): Drop -L.. * tests/01-serialize/connect.cc: Delete. * tests/01-serialize/decoder.cc: Delete. * tests/01-serialize/encoder.cc: Delete. * tests/02-comms/client-1.cc: Delete. * tests/02-comms/pivot-1.cc: Delete. * tests/02-comms/server-1.cc: Delete. * tests/Makesub.in: Delete. * tests/jouster: Delete.
2020-12-22Daily bump.GCC Administrator1-0/+26
2020-12-21bootstrap: std:stoul non-portable [PR 98412]Nathan Sidwell2-0/+2
Fix some more system-specific issues. Not everyone's C++11 is the same :( PR bootstrap/98412 libcody/ * client.cc: Include cstdlib. * server.cc: Include cstdlib. gcc/cp/ * mapper-client.cc: INCLUDE_STRING, INCLUDE_VECTOR. (module_client::open_module_client): Avoid std::stoul. * mapper-resolver.cc: INCLUDE_STRING, INCLUDE_VECTOR.
2020-12-21libcody: Include <netinet/in.h> as neededGerald Pfeifer1-0/+1
libcody as originally added to GCC fail to build on *-unknown-freebsd11.4 and presumably others: c++ -std=c++11 -g -include config.h -I ... -MMD -MP -MF netclient.d -c -o netclient.o .../libcody/netclient.cc:114:3: error: unknown type sockaddr_in6 addr; ^~~~~~~~~~~~ sockaddr_in6 is declared in /usr/include/netinet6/in6.h, which is included by /usr/include/netinet/in.h. Indeed, per https://man7.org/linux/man-pages/man7/ipv6.7.html #include <sys/socket.h> #include <netinet/in.h> should be included, and our own gcc/ada/gsocket.h also has #if !(defined (VMS) || defined (__MINGW32__)) #include <sys/socket.h> #include <sys/un.h> #include <netinet/in.h> : #endif libcody/ChangeLog: 2020-12-21 Gerald Pfeifer <gerald@pfeifer.com> * netserver.cc: Include <netinet/in.h>.
2020-12-21libcody: Add ranlibNathan Sidwell4-0/+96
Add RANLIB. libcody/ * Makefile.in (RANLIB): New var. * Makesub.in (libcody.a): Apply RANLIB. * configure.ac: Call AC_PROG_RANLIB. * configure: Rebuilt.
2020-12-21libcody: to_string is not always available [PR 98412]Nathan Sidwell1-1/+7
to_string is not always available, so don't use it. libcody/ * buffer.cc (MessageBuffer::AppendInteger): Workaround to_string's non-ubiquity.
2020-12-21libcody: Add netinet.hNathan Sidwell1-0/+1
We explicitly need to inlude netinet.h, (despite what happened on my test systems) libcody/ * netclient.cc: Add netinet.h.
2020-12-18Daily bump.GCC Administrator1-0/+10
2020-12-17libcody: Allow PIC [PR 98324]Nathan Sidwell3-1/+19
While this doesn't fix 98324, it was an omission. Cribbed code from libcpp to build libcody as PIC. libcody/ * configure.ac: Add --enable-host-shared. * Makefile.in: Add FLAGPIC. * configure: Regenerated.
2020-12-17libcody: Remove nop asmNathan Sidwell1-1/+2
This asm was a useful place for gdb to drop a breakpoint and make it clear where you were when debugging. I took a punt that 'surely every arch has a nop instruction'. Well, no, some apparently have nops with operands (what, do nothing harder? :) libcody/ * fatal.cc (HCF): Remove nop breakpoint lander.
2020-12-17Daily bump.GCC Administrator1-0/+27
2020-12-16c++: Another solaris header use [PR 98315]Nathan Sidwell1-0/+4
Rather than early-include sys/socket.h, let's allow the includer to tell cody no networking. libcody/ * cody.hh: Allow user to set CODY_NETWORKING. gcc/cp/ * mapper-resolver.cc: Remove early include of sys/socket.h. Specify no CODY_NETWORKING instead. * module.cc: Specify no CODY_NETWORKING.
2020-12-16libcody: fix --enable-checking=... follow-up [PR98311]Jakub Jelinek2-16/+20
> The -enable-checking configure code in libcody didn't play well with > us. This just uses libcpp's configurey for that piece. This doesn't set is_release anywhere, which means when --enable-checking* or --disable-checking isn't specified, it always treats it as --enable-checking=yes, while the normal gcc behavior is treat only trunk as --enable-checking=yes and treat release branches as --enable-checking=release by default. On the other side, nothing uses those ac_assert_checking and ac_valgrind_checking variables, so it is a waste to compute those. 2020-12-16 Jakub Jelinek <jakub@redhat.com> * configure.ac: Compute is_release. (NMS_ENABLE_CHECKING): Simplify but not computing ac_assert_checking and ac_valgrind_checking the code doesn't use. * configure: Regenerated.
2020-12-16libcody: Fix build for older GCC versionsJonathan Wakely1-2/+13
Before CWG DR 1955 the controlling expression for an #elif must be syntactically correct, meaning this won't compile with C++11 compilers such as gcc 4.8: The solution is to define __has_include(X) as 0 for compilers that don't support it. The second problem is that when <source_location> is found, it is used without the std:: qualification. libcody/ChangeLog: * internal.hh: Define fallback macros for __has_builtin and __has_include. Use __has_builtin for __builtin_FILE and __builtin_LINE. Define alias for std::source_location.
2020-12-16libcody: fix --enable-checking=... [PR 98311]Nathan Sidwell2-20/+79
The -enable-checking configure code in libcody didn't play well with us. This just uses libcpp's configurey for that piece. libcody/ * configure.ac: Use libcpp's enable-checking code. * configure: Rebuilt.
2020-12-16libcody: More dashismNathan Sidwell2-14/+16
There were still some dash-killing uses of +=. Fixed thusly. * config.m4: Replace V+="..." with V="$V..." * configure: Rebuilt.
2020-12-16Daily bump.GCC Administrator1-0/+58
2020-12-15cody: Remove unused variable.Marek Polacek1-1/+0
libcody/ChangeLog: * buffer.cc (MessageBuffer::Lex): Remove unused variable.
2020-12-15libcody: Work with older gccsNathan Sidwell1-1/+5
Older GCCs don't have all the exciting options we have now. let's just turn them off. libcody/ * Makefile.in: Disable some flags.
2020-12-15Fix dashismNathan Sidwell2-4/+4
I missed some other places that used += * config.m4: Avoid var+=... * configure: Rebuilt
2020-12-15libcody: Fix for dashNathan Sidwell2-2/+4
Apparently 'var+=...' is not a dash thing. Fixed thusly. * config.m4: Avoid non-dash idiom * configure: Rebuilt.
2020-12-15c++: Add changelog files in c++tools/ and libcody/ directoriesJakub Jelinek1-0/+6
Add ChangeLog files, so that update_version_git can then fill those in.
2020-12-15Add libcodyNathan Sidwell36-0/+15137
In order to separate compiler from build system, C++ Modules, as implemented in GCC introduces a communication channel between those two entities. This is implemented by libcody. It is anticipated that other implementations will also implement this protocol, or use libcody to provide it. * Makefile.def: Add libcody. * configure.ac: Add libcody. * Makefile.in: Regenerated. * configure: Regenerated. gcc/ * Makefile.in (CODYINC, CODYLIB, CODYLIB_H): New. Use them. libcody/ * configure.ac: New. * CMakeLists.txt: New. * CODING.md: New. * CONTRIB.md: New. * LICENSE: New. * LICENSE.gcc: New. * Makefile.in: New. * Makesub.in: New. * README.md: New. * buffer.cc: New. * build-aux/config.guess: New. * build-aux/config.sub: New. * build-aux/install-sh: New. * client.cc: New. * cmake/libcody-config-ix.cmake * cody.hh: New. * config.h.in: New. * config.m4: New. * configure: New. * configure.ac: New. * dox.cfg.in: New. * fatal.cc: New. * gdbinit.in: New. * internal.hh: New. * netclient.cc: New. * netserver.cc: New. * packet.cc: New. * resolver.cc: New. * server.cc: New. * tests/01-serialize/connect.cc: New. * tests/01-serialize/decoder.cc: New. * tests/01-serialize/encoder.cc: New. * tests/02-comms/client-1.cc: New. * tests/02-comms/pivot-1.cc: New. * tests/02-comms/server-1.cc: New. * tests/Makesub.in: New. * tests/jouster: New.