llvm-gcc 4.0 question

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1

Thanks for responding, Duncan, and clarifying that y'all need more info
to help.

I'm trying to compile binaries on os x 10.5.8 intel hardware that are
compatible on ppc os x 10.4.

When I include various flags to llvm-gcc, including: -m32 -arch ppc
-isysroot /Developer/SDKs/MacOS10.4u.sdk -mmacosx-version-min=10.4

I am seeing errors when compiling using llvm-gcc 4.2.

If I leave out just the -isysroot /Developer/SDKs/MacOS10.4u.sdk flag,
then both the native gcc and llvm-gcc produced binaries on 10.4 have
runtime bus errors.

Here are a couple of examples of the errors that are seen during
compilation:

gcc -I/Users/build/NightlyBuild/rabbit_main/deploy/llvm-2.6-test/
projects/test-suite/SingleSource/UnitTests -I/Users/build/NightlyBuild/
rabbit_main/3rdparty/llvm-2.6-src/projects/test-suite/SingleSource/
UnitTests -I/Users/build/NightlyBuild/rabbit_main/deploy/llvm-2.6-test/
include -I/Users/build/NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/
projects/test-suite/include -I../../include -I/Users/build/
NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/include -D_GNU_SOURCE -
D__STDC_LIMIT_MACROS -DNDEBUG -O3 -O2 -m32 -arch ppc -isysroot /
Developer/SDKs/MacOSX10.4u.sdk -mmacosx-version-min=10.4 -fno-omit-
frame-pointer -fno-strict-aliasing -fPIC /Users/build/NightlyBuild/
rabbit_main/3rdparty/llvm-2.6-src/projects/test-suite/SingleSource/
UnitTests/2003-05-07-VarArgs.c -lm -o Output/2003-05-07-VarArgs.native
/Users/build/NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/projects/
test-suite/RunSafely.sh -r ppcmac3x104.arxan.com -l build -rc ssh 500
1 /dev/null Output/2003-05-07-VarArgs.out-nat Output/2003-05-07-
VarArgs.native
/Developer/usr/bin/llvm-gcc -I/Users/build/NightlyBuild/rabbit_main/
deploy/llvm-2.6-test/projects/test-suite/SingleSource/UnitTests -I/
Users/build/NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/projects/
test-suite/SingleSource/UnitTests -I/Users/build/NightlyBuild/
rabbit_main/deploy/llvm-2.6-test/include -I/Users/build/NightlyBuild/
rabbit_main/3rdparty/llvm-2.6-src/projects/test-suite/include -I../../
include -I/Users/build/NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/
include -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -DNDEBUG -O2 -m32 -arch
ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk -mmacosx-version-
min=10.4 -fno-omit-frame-pointer -fno-strict-aliasing -fPIC -c /Users/
build/NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/projects/test-
suite/SingleSource/UnitTests/2003-05-07-VarArgs.c -o Output/2003-05-07-
VarArgs.bc -emit-llvm
In file included from /Users/build/NightlyBuild/rabbit_main/3rdparty/
llvm-2.6-src/projects/test-suite/SingleSource/UnitTests/2003-05-07-
VarArgs.c:2:
/Developer/SDKs/MacOSX10.4u.sdk/usr/include/stdarg.h:4:25: error:
stdarg.h: No such file or directory/Users/build/NightlyBuild/
rabbit_main/3rdparty/llvm-2.6-src/projects/test-suite/SingleSource/
UnitTests/2003-05-07-VarArgs.c: In function 'test':
/Users/build/NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/projects/
test-suite/SingleSource/UnitTests/2003-05-07-VarArgs.c:30: error:
expected expression before 'char'
/Users/build/NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/projects/
test-suite/SingleSource/UnitTests/2003-05-07-VarArgs.c:30: warning:
assignment makes pointer from integer without a cast
/Users/build/NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/projects/
test-suite/SingleSource/UnitTests/2003-05-07-VarArgs.c:34: error:
expected expression before 'int'
/Users/build/NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/projects/
test-suite/SingleSource/UnitTests/2003-05-07-VarArgs.c:38: error:
expected expression before 'double'
/Users/build/NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/projects/
test-suite/SingleSource/UnitTests/2003-05-07-VarArgs.c:41: error:
expected expression before'long'
/Users/build/NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/projects/
test-suite/SingleSource/UnitTests/2003-05-07-VarArgs.c:46: error:
expected expression before'int'
/Users/build/NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/projects/
test-suite/SingleSource/UnitTests/2003-05-07-VarArgs.c:50: error:
expected expression before 'DWordS'
/Users/build/NightlyBuild/rabbit_main/3rdparty/llvm-2.6-src/projects/
test-suite/SingleSource/UnitTests/2003-05-07-VarArgs.c:50: error:
incompatible types in assignment

Developer/usr/bin/llvm-g++ -I/Users/build/NightlyBuild/llvm_root/
deploy/llvm-2.6-test/projects/test-suite/SingleSource/Regression/C++ -
I/Users/build/NightlyBuild/llvm_root/3rdparty/llvm-2.6-src/projects/
test-suite/SingleSource/Regression/C++ -I/Users/build/NightlyBuild/
llvm_root/deploy/llvm-2.6-test/include -I/Users/build/NightlyBuild/
llvm_root/3rdparty/llvm-2.6-src/projects/test-suite/include -I../../../
include -I/Users/build/NightlyBuild/llvm_root/3rdparty/llvm-2.6-src/
include -D_GNU_SOURCE -D__STDC_LIMIT_MACROS -DNDEBUG -O2 -m32 -arch
ppc -isysroot /Developer/SDKs/MacOSX10.4u.sdk -mmacosx-version-
min=10.4 -fno-omit-frame-pointer -fno-strict-aliasing -fPIC -c /Users/
build/NightlyBuild/llvm_root/3rdparty/llvm-2.6-src/projects/test-suite/
SingleSource/Regression/C++/ofstream_ctor.cpp -o Output/
ofstream_ctor.bc -emit-llvm
In file included from /Developer/SDKs/MacOSX10.4u.sdk/usr/include/
wchar.h:112,
                  from /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/
4.0.0/cwchar:54,
                  from /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/
4.0.0/bits/postypes.h:46,
                  from /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/
4.0.0/iosfwd:49,
                  from /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/
4.0.0/ios:43,
                  from /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/
4.0.0/istream:44,
                  from /Developer/SDKs/MacOSX10.4u.sdk/usr/include/c++/
4.0.0/fstream:44,
                  from /Users/build/NightlyBuild/llvm_root/3rdparty/
llvm-2.6-src/projects/test-suite/SingleSource/Regression/C++/
ofstream_ctor.cpp:2:
/Developer/SDKs/MacOSX10.4u.sdk/usr/include/stdarg.h:4:25: error:
stdarg.h: No such file or directory
make[4]: *** [Output/ofstream_ctor.bc] Error 1

Thanks,

Jose

2

Hi Jose, I'm afraid I can't help you with this - I don't know anything
about this area. Hopefully someone else will give you a hand.

Ciao,

Duncan.

3

This is expected because 10.4u.sdk was not updated to support llvm-gcc.

4

Thanks for replying, Devang.

Can you elaborate a little about this? Do the headers need to be
modified specifically for llvm-gcc-4.2, or do you mean for gcc-4.2? If
the former, can you give an example?

Thanks,

Jose

5

When -isysroot is used on the command line the headers are used from
SDK folder. In this case, llvm-gcc headers are not available in 10.4
sdk folder.