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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - missing trailing space in EXTRA_FLAGS prevents libc++ from compiling"
href="http://llvm.org/bugs/show_bug.cgi?id=15761">15761</a>
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<th>Summary</th>
<td>missing trailing space in EXTRA_FLAGS prevents libc++ from compiling
</td>
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<th>Product</th>
<td>libc++
</td>
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<th>Version</th>
<td>3.2
</td>
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<th>Hardware</th>
<td>Macintosh
</td>
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<th>OS</th>
<td>MacOS X
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>release blocker
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>All Bugs
</td>
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<th>Assignee</th>
<td>hhinnant@apple.com
</td>
</tr>
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<th>Reporter</th>
<td>gonzalobg88@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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</tr></table>
<p>
<div>
<pre>There is a missing space at the end of the EXTRA_FLAGS variable inside the
buildit script that prevents libc++ from compiling. Currently:
EXTRA_FLAGS="-std=c++0x -fstrict-aliasing -Wall -Wextra -Wshadow -Wconversion \
-Wnewline-eof -Wpadded -Wmissing-prototypes -Wstrict-aliasing=2 \
-Wstrict-overflow=4"
Produces the following error in MacOS:
+
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++
-c -g -Os -arch i386 -arch x86_64 -std=c++0x -fstrict-aliasing -Wall -Wextra
-Wshadow -Wconversion -Wnewline-eof -Wpadded -Wmissing-prototypes
-Wstrict-aliasing=2 -Wstrict-overflow=4-isysroot
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/
-nostdinc++ -I../include ../src/algorithm.cpp
clang: warning: unknown warning option '-Wstrict-overflow=4-isysroot'; did you
mean '-Wshift-overflow'?
clang: warning:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/:
'linker' input unused
warning: unknown warning option '-Wstrict-overflow=4-isysroot'; did you mean
'-Wshift-overflow'? [-Wunknown-warning-option]
As you see there is a missing space between -Wstrict-overflow=4 and -isysroot.
This can be fixed by just appending an extra space:
EXTRA_FLAGS="-std=c++0x -fstrict-aliasing -Wall -Wextra -Wshadow -Wconversion \
-Wnewline-eof -Wpadded -Wmissing-prototypes -Wstrict-aliasing=2 \
-Wstrict-overflow=4 "</pre>
</div>
</p>
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