[CMake] Problem with Xcode

[Carminati Federico]

Good evening,
     the following simple CMakeLists.txt works when generating Unix  
makefiles and fails when generating Xcode projects

Project(Test)

Cmake_Minimum_Required(VERSION 2.6)

Set(CMAKE_Fortran_COMPILER gfortran)
Enable_Language(Fortran)
Set(CMAKE_Fortran_FLAGS "-fno-second-underscore")

Add_Executable(hello hello.c hello.F)


What happens is that in the Xcode project the -fno-second-underscore  
option is passed to the c compiler and compilation fails

CompileC Test.build/Debug/hello.build/Objects-normal/i386/ 
hello-8AACF6EC.o /Users/fca/cmaketest/hello.c normal i386 c  
com.apple.compilers.gcc.4_0
     cd /Users/fca/cmaketest
     /Developer/usr/bin/gcc-4.0 -x c -arch i386 -pipe -Wno-trigraphs - 
fpascal-strings -fasm-blocks -O0 -mdynamic-no-pic - 
DCMAKE_INTDIR="Debug" -fmessage-length=0 -Wmost -Wno-four-char- 
constants -Wno-unknown-pragmas -O0 -F/Users/fca/cmaketest/Debug -I/ 
Users/fca/cmaketest/Debug/include -I/Users/fca/cmaketest/Test.build/ 
Debug/hello.build/DerivedSources -fno-second-underscore -c /Users/fca/ 
cmaketest/hello.c -o /Users/fca/cmaketest/Test.build/Debug/hello.build/ 
Objects-normal/i386/hello-8AACF6EC.o
cc1: error: unrecognized command line option "-fno-second-underscore"

Best regards,

Federico Carminati
CERN-PH
1211 Geneva 23
Switzerland
Tel: +41 22 76 74959
Fax: +41 22 76 79480
Mobile: +41 76 487 4843