qt5base-lts/mkspecs/macx-ios-clang/rename_main.sh
Oswald Buddenhagen f702d5c327 fix quoting problems in ios main() renamer
Task-number: QTBUG-45125
Change-Id: I6fc724509e25a43bb229715f7e486bf9c3553f53
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@theqtcompany.com>
2015-03-27 13:29:59 +00:00

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2.9 KiB
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#!/bin/bash
#############################################################################
##
## Copyright (C) 2015 The Qt Company Ltd.
## Contact: http://www.qt.io/licensing/
##
## This file is the build configuration utility of the Qt Toolkit.
##
## $QT_BEGIN_LICENSE:LGPL21$
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## GNU Lesser General Public License Usage
## Alternatively, this file may be used under the terms of the GNU Lesser
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#############################################################################
if [ $# -ne 2 ]; then
echo "$0: wrong number of arguments for internal tool used by iOS mkspec"
else
arch_paths=""
for a in $2; do
arch_paths="$arch_paths
$1/$a"
done
for f in $(IFS="
"; find $arch_paths -name '*.o'); do
# Skip object files without the _main symbol
nm $f 2>/dev/null | grep -q 'T _main$' || continue
fname=${f#$1/}
file -b $f | grep -qi 'llvm bit-code' && \
(cat \
<<EOF >&2
$f:: error: The file '$fname' contains LLVM bitcode, not object code. Automatic main() redirection could not be applied.
note: This is most likely due to the use of link-time optimization (-flto). Please disable LTO, or work around the \
issue by manually renaming your main() function to qtmn():
#ifdef Q_OS_IOS
extern "C" int qtmn(int argc, char *argv[])
#else
int main(int argc, char *argv[])
#endif
EOF
) && exit 1
echo "Found main() in $fname"
strings -t d - $f | grep '_main\(\.eh\)\?$' | while read match; do
offset=$(echo $match | cut -d ' ' -f 1)
symbol=$(echo $match | cut -d ' ' -f 2)
echo " Renaming '$symbol' at offset $offset to '${symbol/main/qtmn}'"
# In-place rename the string (keeping the same length)
printf '_qtmn' | dd of=$f bs=1 seek=$offset conv=notrunc >/dev/null 2>&1
done
done
fi