4deb2d93c5
This commit adds support for gcc 5.1 in Buildroot. In terms of gcc patches, compared to gcc 4.9.x: * Kept as is, sometimes after minor adjusments: 100-uclibc-conf.patch 301-missing-execinfo_h.patch 810-arm-softfloat-libgcc.patch 830-arm_unbreak_armv4t.patch 840-microblaze-enable-dwarf-eh-support.patch 850-libstdcxx-uclibc-c99.patch 860-cilk-wchar.patch * Dropped: 110-pr64896.patch 111-pr65730.patch * Split in multiple parts: 900-musl-support.patch The patches from Crosstool-NG for muls support are used instead of one single patch. * Renamed: 910-gcc-poison-system-directories.patch to 200-gcc-poison-system-directories.patch 920-libgcc-remove-unistd-header.patch to 201-libgcc-remove-unistd-header.patch Since the 9xx part of the series is now used by the various musl related patches. We have tested the following configurations, with a minimal Busybox system: * ARM, uClibc-ng * ARM, glibc * ARM, musl * x86, uClibc-ng and uClibc 0.9.33.2 * x86, glibc * x86, musl All of the configurations built fine. All the configurations boot fine in Qemu, except x86/uClibc (either ng or 0.9.33.2), it segfaults when running init: devtmpfs: mounted Freeing unused kernel memory: 300K (c1389000 - c13d4000) init[1]: segfault at 0 ip b77708c1 sp bfa9bb0c error 4 in ld-uClibc-0.9.33.2.so[b776c000+6000] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b We'll give some time for the uClibc developers to fix the problem before taking other measures in Buildroot to exclude gcc 5.1 from a x86/uClibc configuration. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
81 lines
2.7 KiB
Diff
81 lines
2.7 KiB
Diff
From: ktkachov <ktkachov@138bc75d-0d04-0410-961f-82ee72b054a4>
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Date: Wed, 22 Apr 2015 14:24:11 +0000 (+0000)
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Subject: libstdc++, libgfortran gthr workaround for musl
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X-Git-Url: https://gcc.gnu.org/git/?p=gcc.git;a=commitdiff_plain;h=1e5f711c11cb80ce609db9e9c1d8b2da0f7b5b61
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libstdc++, libgfortran gthr workaround for musl
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On behalf of szabolcs.nagy@arm.com
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[libstdc++-v3/]
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2015-04-22 Szabolcs Nagy <szabolcs.nagy@arm.com>
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* config/os/generic/os_defines.h (_GLIBCXX_GTHREAD_USE_WEAK): Define.
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* configure.host (os_include_dir): Set to "os/generic" for linux-musl*.
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[libgfortran/]
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2015-04-22 Szabolcs Nagy <szabolcs.nagy@arm.com>
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* acinclude.m4 (GTHREAD_USE_WEAK): Define as 0 for *-*-musl*.
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* configure: Regenerate.
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git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@222329 138bc75d-0d04-0410-961f-82ee72b054a4
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---
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Index: b/libgfortran/acinclude.m4
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===================================================================
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--- a/libgfortran/acinclude.m4
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+++ b/libgfortran/acinclude.m4
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@@ -100,7 +100,7 @@
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[Define to 1 if the target supports #pragma weak])
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fi
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case "$host" in
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- *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* )
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+ *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* )
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AC_DEFINE(GTHREAD_USE_WEAK, 0,
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[Define to 0 if the target shouldn't use #pragma weak])
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;;
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Index: b/libgfortran/configure
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===================================================================
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--- a/libgfortran/configure
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+++ b/libgfortran/configure
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@@ -26447,7 +26447,7 @@
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fi
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case "$host" in
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- *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* )
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+ *-*-darwin* | *-*-hpux* | *-*-cygwin* | *-*-mingw* | *-*-musl* )
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$as_echo "#define GTHREAD_USE_WEAK 0" >>confdefs.h
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Index: b/libstdc++-v3/config/os/generic/os_defines.h
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===================================================================
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--- a/libstdc++-v3/config/os/generic/os_defines.h
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+++ b/libstdc++-v3/config/os/generic/os_defines.h
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@@ -33,4 +33,9 @@
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// System-specific #define, typedefs, corrections, etc, go here. This
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// file will come before all others.
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+// Disable the weak reference logic in gthr.h for os/generic because it
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+// is broken on every platform unless there is implementation specific
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+// workaround in gthr-posix.h and at link-time for static linking.
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+#define _GLIBCXX_GTHREAD_USE_WEAK 0
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+
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#endif
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Index: b/libstdc++-v3/configure.host
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===================================================================
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--- a/libstdc++-v3/configure.host
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+++ b/libstdc++-v3/configure.host
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@@ -271,6 +271,9 @@
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freebsd*)
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os_include_dir="os/bsd/freebsd"
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;;
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+ linux-musl*)
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+ os_include_dir="os/generic"
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+ ;;
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gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
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if [ "$uclibc" = "yes" ]; then
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os_include_dir="os/uclibc"
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