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Link error for "mach_absolute_time"
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Link error for "mach_absolute_time"

  • Subject: Link error for "mach_absolute_time"
  • From: "Dirk Stegemann (Mailing-Lists)" <email@hidden>
  • Date: Mon, 5 Nov 2007 14:18:11 +0200
Hello,

I'm getting a link error when trying to build a program which uses the mach_absolute_time() API, under following conditions:

- Mac OS X 10.5 / Xcode 3
- Target architecture is PPC 32-bit
- "SDKROOT_ppc" is set to "/Developer/SDKs/MacOSX10.3.9.sdk"

The application requires Mac OS X 10.3.9 minimum, therefore I'm also setting

 GCC_VERSION_ppc = 4.0
 MACOSX_DEPLOYMENT_TARGET_ppc = 10.3

in my xcconfig file.

Strange enough, when setting "GCC_VERSION_ppc = 3.3", the build succeeds as well (doesn't the 10.3.9 SDK require GCC4?)

Anyway, the "SDKROOT_ppc" settings seems to be responsible alone.
PPC 64-bit does not seem to be affected.

On Mac OS X 10.4.10 / Xcode 2.4.x, everything is working fine.

Does anybody know a solution or work-around?

Below please find a build transcript of the failing build process, as well as my complete xcconfg file.


Best regards,
Dirk Stegemann





The xcconfig file (only PPC 32-bit fails):

----- snip -----
// Build settings used by all projects and targets
SDKROOT_ppc    = /Developer/SDKs/MacOSX10.3.9.sdk
SDKROOT_i386   = /Developer/SDKs/MacOSX10.4u.sdk
SDKROOT_ppc64  = /Developer/SDKs/MacOSX10.5.sdk
SDKROOT_x86_64 = /Developer/SDKs/MacOSX10.5.sdk

// This setting succeeds:
//GCC_VERSION_ppc    = 3.3

// This setting fails:
GCC_VERSION_ppc    = 4.0

GCC_VERSION_i386   = 4.0
GCC_VERSION_ppc64  = 4.0
GCC_VERSION_x86_64 = 4.0

MACOSX_DEPLOYMENT_TARGET_ppc    = 10.3
MACOSX_DEPLOYMENT_TARGET_i386   = 10.4
MACOSX_DEPLOYMENT_TARGET_ppc64  = 10.5
MACOSX_DEPLOYMENT_TARGET_x86_64 = 10.5
----- snip -----


The complete build transcript (including 32-bit and 64-bit):

----- snip -----
Building target “Mach_absolute_time_Failure” of project “Mach_absolute_time_Failure” with configuration “Release”


Checking Dependencies

CompileC build/Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/ppc64/main.o /Users/ dirk/Desktop/Mach_absolute_time_Failure/main.cpp normal ppc64 c++ com.apple.compilers.gcc.4_0
cd /Users/dirk/Desktop/Mach_absolute_time_Failure
/Developer/usr/bin/gcc-4.0 -x c++ -arch ppc64 -pipe -Wno- trigraphs -fpascal-strings -fasm-blocks -Os -mdynamic-no-pic -Wreturn- type -Wunused-variable -fmessage-length=0 -mtune=G5 - fvisibility=hidden -fvisibility-inlines-hidden -mmacosx-version- min=10.5 -gdwarf-2 -I/Users/dirk/Desktop/Mach_absolute_time_Failure/ build/Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Mach_absolute_time_Failure.hmap -F/ Users/dirk/Desktop/Mach_absolute_time_Failure/build/Release -I/Users/ dirk/Desktop/Mach_absolute_time_Failure/build/Release/include -I/ Users/dirk/Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/DerivedSources -isysroot /Developer/ SDKs/MacOSX10.5.sdk -c /Users/dirk/Desktop/Mach_absolute_time_Failure/ main.cpp -o /Users/dirk/Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/ppc64/main.o

CompileC build/Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/ppc/main.o /Users/ dirk/Desktop/Mach_absolute_time_Failure/main.cpp normal ppc c++ com.apple.compilers.gcc.4_0
cd /Users/dirk/Desktop/Mach_absolute_time_Failure
/Developer/usr/bin/gcc-4.0 -x c++ -arch ppc -pipe -Wno-trigraphs -fpascal-strings -fasm-blocks -Os -mdynamic-no-pic -Wreturn-type - Wunused-variable -fmessage-length=0 -mtune=G5 -fvisibility=hidden - fvisibility-inlines-hidden -mmacosx-version-min=10.3 -gdwarf-2 -I/ Users/dirk/Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Mach_absolute_time_Failure.hmap -F/ Users/dirk/Desktop/Mach_absolute_time_Failure/build/Release -I/Users/ dirk/Desktop/Mach_absolute_time_Failure/build/Release/include -I/ Users/dirk/Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/DerivedSources -isysroot /Developer/ SDKs/MacOSX10.3.9.sdk -c /Users/dirk/Desktop/ Mach_absolute_time_Failure/main.cpp -o /Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Mach_absolute_time_Failure.build/ Release/Mach_absolute_time_Failure.build/Objects-normal/ppc/main.o

CompileC build/Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/i386/main.o /Users/ dirk/Desktop/Mach_absolute_time_Failure/main.cpp normal i386 c++ com.apple.compilers.gcc.4_0
cd /Users/dirk/Desktop/Mach_absolute_time_Failure
/Developer/usr/bin/gcc-4.0 -x c++ -arch i386 -pipe -Wno- trigraphs -fpascal-strings -fasm-blocks -Os -mdynamic-no-pic -Wreturn- type -Wunused-variable -fmessage-length=0 -fvisibility=hidden - fvisibility-inlines-hidden -mmacosx-version-min=10.4 -gdwarf-2 -I/ Users/dirk/Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Mach_absolute_time_Failure.hmap -F/ Users/dirk/Desktop/Mach_absolute_time_Failure/build/Release -I/Users/ dirk/Desktop/Mach_absolute_time_Failure/build/Release/include -I/ Users/dirk/Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/DerivedSources -isysroot /Developer/ SDKs/MacOSX10.4u.sdk -c /Users/dirk/Desktop/ Mach_absolute_time_Failure/main.cpp -o /Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Mach_absolute_time_Failure.build/ Release/Mach_absolute_time_Failure.build/Objects-normal/i386/main.o

CompileC build/Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/x86_64/main.o /Users/ dirk/Desktop/Mach_absolute_time_Failure/main.cpp normal x86_64 c++ com.apple.compilers.gcc.4_0
cd /Users/dirk/Desktop/Mach_absolute_time_Failure
/Developer/usr/bin/gcc-4.0 -x c++ -arch x86_64 -pipe -Wno- trigraphs -fpascal-strings -fasm-blocks -Os -mdynamic-no-pic -Wreturn- type -Wunused-variable -fmessage-length=0 -fvisibility=hidden - fvisibility-inlines-hidden -mmacosx-version-min=10.5 -gdwarf-2 -I/ Users/dirk/Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Mach_absolute_time_Failure.hmap -F/ Users/dirk/Desktop/Mach_absolute_time_Failure/build/Release -I/Users/ dirk/Desktop/Mach_absolute_time_Failure/build/Release/include -I/ Users/dirk/Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/DerivedSources -isysroot /Developer/ SDKs/MacOSX10.5.sdk -c /Users/dirk/Desktop/Mach_absolute_time_Failure/ main.cpp -o /Users/dirk/Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/x86_64/main.o

Ld /Users/dirk/Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/x86_64/ Mach_absolute_time_Failure normal x86_64
cd /Users/dirk/Desktop/Mach_absolute_time_Failure
/Developer/usr/bin/g++-4.0 -o /Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Mach_absolute_time_Failure.build/ Release/Mach_absolute_time_Failure.build/Objects-normal/x86_64/ Mach_absolute_time_Failure -L/Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Release -F/Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Release -filelist /Users/dirk/ Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/x86_64/ Mach_absolute_time_Failure.LinkFileList -arch x86_64 -mmacosx-version- min=10.5 -isysroot /Developer/SDKs/MacOSX10.5.sdk

Ld /Users/dirk/Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/ppc64/ Mach_absolute_time_Failure normal ppc64
cd /Users/dirk/Desktop/Mach_absolute_time_Failure
/Developer/usr/bin/g++-4.0 -o /Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Mach_absolute_time_Failure.build/ Release/Mach_absolute_time_Failure.build/Objects-normal/ppc64/ Mach_absolute_time_Failure -L/Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Release -F/Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Release -filelist /Users/dirk/ Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/ppc64/ Mach_absolute_time_Failure.LinkFileList -arch ppc64 -mmacosx-version- min=10.5 -isysroot /Developer/SDKs/MacOSX10.5.sdk

Ld /Users/dirk/Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/ppc/ Mach_absolute_time_Failure normal ppc
cd /Users/dirk/Desktop/Mach_absolute_time_Failure
/Developer/usr/bin/g++-4.0 -o /Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Mach_absolute_time_Failure.build/ Release/Mach_absolute_time_Failure.build/Objects-normal/ppc/ Mach_absolute_time_Failure -L/Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Release -F/Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Release -filelist /Users/dirk/ Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/ppc/ Mach_absolute_time_Failure.LinkFileList -arch ppc -mmacosx-version- min=10.3 -isysroot /Developer/SDKs/MacOSX10.3.9.sdk
Undefined symbols:
"mach_absolute_time()", referenced from:
_main in main.o
ld: symbol(s) not found
collect2: ld returned 1 exit status

Ld /Users/dirk/Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/i386/ Mach_absolute_time_Failure normal i386
cd /Users/dirk/Desktop/Mach_absolute_time_Failure
/Developer/usr/bin/g++-4.0 -o /Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Mach_absolute_time_Failure.build/ Release/Mach_absolute_time_Failure.build/Objects-normal/i386/ Mach_absolute_time_Failure -L/Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Release -F/Users/dirk/Desktop/ Mach_absolute_time_Failure/build/Release -filelist /Users/dirk/ Desktop/Mach_absolute_time_Failure/build/ Mach_absolute_time_Failure.build/Release/ Mach_absolute_time_Failure.build/Objects-normal/i386/ Mach_absolute_time_Failure.LinkFileList -arch i386 -mmacosx-version- min=10.4 -isysroot /Developer/SDKs/MacOSX10.4u.sdk

----- snip -----



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