OpenBLAS build failure

[ViralBShah]

I just updated to OS X 10.11.1 (El Capitan), and the latest XCode. I can't get openblas to build. I am building a fresh checkout of the julia source tree and this is where it fails:

/Applications/Xcode.app/Contents/Developer/usr/bin/make -C build/openblas/ CC=clang -stdlib=libc++ -mmacosx-version-min=10.7 -m64 FC=gfortran -mmacosx-version-min=10.7 -m64 RANLIB=ranlib FFLAGS= -O2 -fPIC TARGET= BINARY=64 USE_THREAD=1 GEMM_MULTITHREADING_THRESHOLD=50 NUM_THREADS=16 NO_AFFINITY=1 DYNAMIC_ARCH=1 INTERFACE64=1 SYMBOLSUFFIX=64_ LIBPREFIX=libopenblas64_ OBJCONV=/Users/viral/julia/deps/build/objconv/objconv
ldld::  librarylibrary  notnot  foundfound  forfor  --lcrt1.10.6.olcrt1.10.6.o
collect2: error: ld returned 1 exit status
collect2: error: ld returned 1 exit status
make[3]: *** [sblat1] Error 1
make[3]: *** Waiting for unfinished jobs....
make[3]: *** [dblat1] Error 1
ld: library not found for -lcrt1.10.6.o
collect2: error: ld returned 1 exit status
make[3]: *** [cblat1] Error 1
ld: library not found for -lcrt1.10.6.o
collect2: error: ld returned 1 exit status
make[3]: *** [zblat1] Error 1
make[2]: *** [tests] Error 2
*** Clean the OpenBLAS build with 'make -C deps clean-openblas'. Rebuild with 'make OPENBLAS_USE_THREAD=0 if OpenBLAS had trouble linking libpthread.so, and with 'make OPENBLAS_TARGET_ARCH=NEHALEM' if there were errors building SandyBridge support. Both these options can also be used simultaneously. ***
make[1]: *** [build/openblas/libopenblas64_.dylib] Error 1
make: *** [julia-deps] Error 2

viral-2 01:30:17 (master) ~/julia$ clang --version
Apple LLVM version 7.0.0 (clang-700.1.76)
Target: x86_64-apple-darwin15.0.0
Thread model: posix

[tkelman]

Have you run xcode-select --install since upgrading?

[ViralBShah]

I wonder how it got this far. Doing that now.

[ViralBShah]

xcode-select --install goes through a bunch of stuff and finally fails with Network Error.

[dnadlinger]

I had the same issue, but solved it by cleaning everything and reinstalling gcc from brew (for gfortran, as apparently early builds were buggy).

[stevengj]

I had this problem, but brew upgrade combined with xcode-select --install fixed it for me. I'm still using the Apple (clang) gcc.

[ViralBShah]

Seems like Apple fixed whatever issue it had with the download and the build is fine after that.