I am wondering if there are any alternatives to resorting to --with-native-system-header-dir= for building FSF gcc on darwin once the SDK is removed from the / and only resides in the buried SDK directory. The FSF gcc bootstrap fails in the absence of /usr/include in the fixincludes step unless I use...
Using built-in specs. COLLECT_GCC=/sw/lib/gcc4.8/bin/gcc-fsf-4.8 COLLECT_LTO_WRAPPER=/sw/lib/gcc4.8/libexec/gcc/x86_64-apple-darwin13.0.0/4.8.1/lto-wrapper Target: x86_64-apple-darwin13.0.0 Configured with: ../gcc-4.8.1/configure --prefix=/sw --prefix=/sw/lib/gcc4.8 --mandir=/sw/share/man --infodir=/sw/lib/gcc4.8/info --enable-languages=c,c++,fortran,lto,objc,obj-c++,java --with-gmp=/sw --with-libiconv-prefix=/sw --with-isl=/sw --with-cloog=/sw --with-mpc=/sw --with-system-zlib --enable-checking=release --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib --program-suffix=-fsf-4.8 --with-native-system-header-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk/usr/include 'CXX_FOR_BUILD=xcrun g++' 'CC_FOR_BUILD=xcrun gcc' CXXFLAGS='-O2 -g -iframework /Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk/System/Library/Frameworks' Thread model: posix gcc version 4.8.1 (GCC) however this breaks -isysroot as... $ /sw/lib/gcc4.8/bin/gcc-fsf-4.8 -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk himenoBMTxpa.c -v Using built-in specs. COLLECT_GCC=/sw/lib/gcc4.8/bin/gcc-fsf-4.8 COLLECT_LTO_WRAPPER=/sw/lib/gcc4.8/libexec/gcc/x86_64-apple-darwin13.0.0/4.8.1/lto-wrapper Target: x86_64-apple-darwin13.0.0 Configured with: ../gcc-4.8.1/configure --prefix=/sw --prefix=/sw/lib/gcc4.8 --mandir=/sw/share/man --infodir=/sw/lib/gcc4.8/info --enable-languages=c,c++,fortran,lto,objc,obj-c++,java --with-gmp=/sw --with-libiconv-prefix=/sw --with-isl=/sw --with-cloog=/sw --with-mpc=/sw --with-system-zlib --enable-checking=release --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib --program-suffix=-fsf-4.8 --with-native-system-header-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk/usr/include 'CXX_FOR_BUILD=xcrun g++' 'CC_FOR_BUILD=xcrun gcc' CXXFLAGS='-O2 -g -iframework /Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk/System/Library/Frameworks' Thread model: posix gcc version 4.8.1 (GCC) COLLECT_GCC_OPTIONS='-mmacosx-version-min=10.9.0' '-isysroot' '/Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk' '-v' '-mtune=core2' /sw/lib/gcc4.8/libexec/gcc/x86_64-apple-darwin13.0.0/4.8.1/cc1 -quiet -v -D__DYNAMIC__ -isysroot /Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk himenoBMTxpa.c -fPIC -quiet -dumpbase himenoBMTxpa.c -mmacosx-version-min=10.9.0 -mtune=core2 -auxbase himenoBMTxpa -version -o /var/folders/l7/2pphc9xd69n5nwbdv44z_knw0000gn/T//ccg2ZqTW.s GNU C (GCC) version 4.8.1 (x86_64-apple-darwin13.0.0) compiled by GNU C version 4.8.1, GMP version 5.1.2, MPFR version 3.1.2, MPC version 1.0.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 ignoring nonexistent directory "/Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk/usr/local/include" ignoring nonexistent directory "/sw/lib/gcc4.8/lib/gcc/x86_64-apple-darwin13.0.0/4.8.1/../../../../x86_64-apple-darwin13.0.0/include" ignoring nonexistent directory "/Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk/Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk/usr/include" ignoring nonexistent directory "/Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk/Library/Frameworks" #include "..." search starts here: #include <...> search starts here: /sw/lib/gcc4.8/lib/gcc/x86_64-apple-darwin13.0.0/4.8.1/include /sw/lib/gcc4.8/include /sw/lib/gcc4.8/lib/gcc/x86_64-apple-darwin13.0.0/4.8.1/include-fixed /Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk/System/Library/Frameworks End of search list. GNU C (GCC) version 4.8.1 (x86_64-apple-darwin13.0.0) compiled by GNU C version 4.8.1, GMP version 5.1.2, MPFR version 3.1.2, MPC version 1.0.1 GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Compiler executable checksum: 77506ba0a077461bca132d88745bf397 himenoBMTxpa.c:39:19: fatal error: stdio.h: No such file or directory #include <stdio.h> ^ compilation terminated. the search path now duplicates the path to the SDK such that you get a search for headers in... /Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk/Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk/usr/include instead of... /Library/Developer/CommandLineTools/SDKs/MacOSX10.9.sdk/usr/include Am I misusing, --with-native-system-header-dir or does it is really incompatible with -isysroot if --with-native-system-header-dir is anything other than /. Thanks in advance for any suggestions. Jack