GCC 5 combined with a recent binutils have a new optimization that
allows them to generate copy relocations even in -fPIE code. Clang has
the same functionality when compiling an executable with -flto. We need
to let the compilers know that they cannot use copy relocations, so they
need to use really position-independent code.
Position independent code throughout is not really required. We just
need the compilers to use position-independent access to symbols coming
from the Qt libraries, but there's currently no other way of doing that.
Task-number: QTBUG-45755
Change-Id: I0d4913955e3745b69672ffff13db5df7377398c5
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Neon detection in configure does not work unless correct
flags are passed to compiler.
Task-number: QTBUG-44690
Change-Id: If119cc9ed80275aaa8796c1be8853559a7670d6a
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>
Due to the way that the QCC mkspecs are structured, the recent
change to add full optimization support causes the -O2 flag to
be completely dropped from QCC builds in release-with-debuginfo
mode, since the QMAKE_CFLAGS_OPTIMIZE variable is not declared
in any configuration file included by QCC toolchains. This patch
adds the necessary flags to make the QCC toolchain operate correctly.
Change-Id: I4cd93442d59fae7c92fc5219cddb16f367447203
Reviewed-by: Rafael Roquetto <rafael.roquetto@kdab.com>
This code hasn't been tested for at least 4 years. It's not maintained
and probably doesn't work.
Change-Id: I4b9a5179e34111b400914f91caa6b741b69771bb
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Replace all tabs with proper space characters and consistently align
the '=' characters. The default alignment for the '=' of 25 characters
has been left as is to get a minimal diff. Lines with the '=' further
to the right and those belonging to 'proper code (TM)' have not been
touched.
The work was mostly done using the following python script (might
come in handy again...):
import sys, re
indent_eq = 25 + 0*4 # 25 characters was the most widely used indentation for the '=' character
p = re.compile(r'(\w+)[ \t]*([\-\+]?)(=$|= )[ \t]*(.*$)')
for fn in sys.argv[1:]:
with open(fn, 'r+') as f:
lines = []
nl_count = 0
continuity_indent = None
for l in f:
m = p.match(l)
nl = l
if m:
n_spaces = max(m.start(3), indent_eq - 1) - len(m.group(2)) - len(m.group(1))
if m.group(2) and m.start(2) >= indent_eq-1 and m.start(2) % 4 == 0:
n_spaces -= 1 # left-shift '+=' by one if the '+' is aligned to a multiple of 4
n_spaces = max(1, n_spaces) # we want at least one space before '='/'+='
nl = m.group(1) + ' '*n_spaces + ''.join(m.group(2,3,4)) + '\n'
continuity_indent = nl.find('= ') + 2 if l[-2] == '\\' else None # remember indent on '\\$'
elif continuity_indent:
nl = ' '*continuity_indent + l.lstrip()
if l[-2] != '\\': # check when to stop the continuation
continuity_indent = None
elif l.startswith('#'):
nl = l.expandtabs(2)
if l != nl:
nl_count += 1
lines.append(nl)
if nl_count > 0:
print fn, nl_count, len(lines)
f.seek(0)
f.writelines(lines)
f.truncate()
Change-Id: I1d2870d0a2fe2e30d398c140fe523e69dd20c81b
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
stack-protector-strong gives performance benefits over
stack-protector-all and is still checking more than -stack-protector,
so seems to be a good middle way and we want to use it when it is
there.
The -shared option for the compiler (not the linker) prevents a
RIM internal version of qcc from forcing -fPIE, and should not harm
in general when set.
In addition, add a method "compilerSupportsFlag" for Windows as is
present in the Unix configure script.
Change-Id: Iba300e9cb82f34043e7b36f8e45287a1aed2a1a5
Original-patch-by: Greg Bentz
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
on the way to eliminate scoping based on the spec.
gcc and msvc go as such into CONFIG, the other ones get the vendor
prefixed, as most are mostly unknown and thus likely to clash with
users' flags.
Change-Id: Ie622f53d90e96dbf05ce7d8c638cd355f04fa20c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
We do not need to include -lang-c++ more than once in QMAKE_LFLAGS*
variables. The fact that this was not appearing more than once was due
to QMAKE_LFLAGS being overwritten (rather than appended to) in
qcc-base-qnx.conf and a weird coincindence in qmake's code to dedupe
libraries passed in to QMAKE_LFLAGS. The deduping was working based
upon options beginning with "-l", including the -lang-c++ option here.
Change-Id: I983f216c0e362a9fe6a924074c5d84aaa659a14f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
Making -lang-c++ integral part of the $CXX command was wrong, because there are
cases where $CXX must be called without the -lang-c++ file (when building asm
files for instance). This commit moves the -lang-c++ to $CXX_FLAGS where it
belongs.
Change-Id: I667c8d722105c6117fcd8ff3102dbdfcb890b24f
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
The QNX toolchain can use Neon on ARM and SSE<X> on x86/x86_64.
Change-Id: I36c61fa12b65d806b3cc60a0aefcb63964f9ab7e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
It transpires that QNX 6.5.0 does not yet have libc support for the
gcc stack smashing protection.
Change-Id: Ic635662b6aa3ce2fad5f69e236386ae9ace420db
Reviewed-by: Andreas Holzammer <andreas.holzammer@kdab.com>
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
mkspecs for QNX qcc, armv7le and x86 targets
Change-Id: Ie4b0ec46a8837ad63f5aea8429cfdd516531e09a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
