This commit seems to break build on macos (travis-ci)
https://bitbucket.org/eigen/eigen/commi ... 113296e3f7

84.40s$ if [ $TRAVIS_OS_NAME == osx ]; then hg clone https://bitbucket.org/eigen/eigen#3.3 /tmp/eigen && mkdir /tmp/eigen-build && cd /tmp/eigen-build && cmake . /tmp/eigen && make -j3 && sudo make install && cd -; fi
adding changesets
adding manifests
adding file changes
added 8936 changesets with 29551 changes to 2851 files
updating to branch 3.3
1609 files updated, 0 files merged, 0 files removed, 0 files unresolved
-- The C compiler identification is AppleClang 8.0.0.8000042
-- The CXX compiler identification is AppleClang 8.0.0.8000042
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang
-- Check for working C compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Performing Test standard_math_library_linked_to_automatically
-- Performing Test standard_math_library_linked_to_automatically - Success
-- Standard libraries to link to explicitly: none
-- Performing Test COMPILER_SUPPORT_WERROR
-- Performing Test COMPILER_SUPPORT_WERROR - Success
-- Performing Test COMPILER_SUPPORT_pedantic
-- Performing Test COMPILER_SUPPORT_pedantic - Success
-- Performing Test COMPILER_SUPPORT_Wall
-- Performing Test COMPILER_SUPPORT_Wall - Success
-- Performing Test COMPILER_SUPPORT_Wextra
-- Performing Test COMPILER_SUPPORT_Wextra - Success
-- Performing Test COMPILER_SUPPORT_Wundef
-- Performing Test COMPILER_SUPPORT_Wundef - Success
-- Performing Test COMPILER_SUPPORT_Wcastalign
-- Performing Test COMPILER_SUPPORT_Wcastalign - Success
-- Performing Test COMPILER_SUPPORT_Wcharsubscripts
-- Performing Test COMPILER_SUPPORT_Wcharsubscripts - Success
-- Performing Test COMPILER_SUPPORT_Wnonvirtualdtor
-- Performing Test COMPILER_SUPPORT_Wnonvirtualdtor - Success
-- Performing Test COMPILER_SUPPORT_Wunusedlocaltypedefs
-- Performing Test COMPILER_SUPPORT_Wunusedlocaltypedefs - Success
-- Performing Test COMPILER_SUPPORT_Wpointerarith
-- Performing Test COMPILER_SUPPORT_Wpointerarith - Success
-- Performing Test COMPILER_SUPPORT_Wwritestrings
-- Performing Test COMPILER_SUPPORT_Wwritestrings - Success
-- Performing Test COMPILER_SUPPORT_Wformatsecurity
-- Performing Test COMPILER_SUPPORT_Wformatsecurity - Success
-- Performing Test COMPILER_SUPPORT_Wshorten64to32
-- Performing Test COMPILER_SUPPORT_Wshorten64to32 - Success
-- Performing Test COMPILER_SUPPORT_Wlogicalop
-- Performing Test COMPILER_SUPPORT_Wlogicalop - Failed
-- Performing Test COMPILER_SUPPORT_Wenumconversion
-- Performing Test COMPILER_SUPPORT_Wenumconversion - Success
-- Performing Test COMPILER_SUPPORT_Wcpp11extensions
-- Performing Test COMPILER_SUPPORT_Wcpp11extensions - Success
-- Performing Test COMPILER_SUPPORT_Wdoublepromotion
-- Performing Test COMPILER_SUPPORT_Wdoublepromotion - Success
-- Performing Test COMPILER_SUPPORT_Wshadow
-- Performing Test COMPILER_SUPPORT_Wshadow - Success
-- Performing Test COMPILER_SUPPORT_Wnopsabi
-- Performing Test COMPILER_SUPPORT_Wnopsabi - Failed
-- Performing Test COMPILER_SUPPORT_Wnovariadicmacros
-- Performing Test COMPILER_SUPPORT_Wnovariadicmacros - Success
-- Performing Test COMPILER_SUPPORT_Wnolonglong
-- Performing Test COMPILER_SUPPORT_Wnolonglong - Success
-- Performing Test COMPILER_SUPPORT_fnochecknew
-- Performing Test COMPILER_SUPPORT_fnochecknew - Success
-- Performing Test COMPILER_SUPPORT_fnocommon
-- Performing Test COMPILER_SUPPORT_fnocommon - Success
-- Performing Test COMPILER_SUPPORT_fstrictaliasing
-- Performing Test COMPILER_SUPPORT_fstrictaliasing - Success
-- Performing Test COMPILER_SUPPORT_wd981
-- Performing Test COMPILER_SUPPORT_wd981 - Failed
-- Performing Test COMPILER_SUPPORT_wd2304
-- Performing Test COMPILER_SUPPORT_wd2304 - Failed
-- Performing Test COMPILER_SUPPORT_STRICTANSI
-- Performing Test COMPILER_SUPPORT_STRICTANSI - Failed
-- Performing Test COMPILER_SUPPORT_Qunusedarguments
-- Performing Test COMPILER_SUPPORT_Qunusedarguments - Success
-- Performing Test COMPILER_SUPPORT_ansi
-- Performing Test COMPILER_SUPPORT_ansi - Success
-- Performing Test COMPILER_SUPPORT_OPENMP
-- Performing Test COMPILER_SUPPORT_OPENMP - Failed
-- Performing Test EIGEN_COMPILER_SUPPORT_CPP11
-- Performing Test EIGEN_COMPILER_SUPPORT_CPP11 - Success
-- Found unsuitable Qt version "" from NOTFOUND
-- Performing Test EIGEN_COMPILER_SUPPORT_CXX11
-- Performing Test EIGEN_COMPILER_SUPPORT_CXX11 - Success
-- The Fortran compiler identification is unknown
-- A cache variable, namely BLAS_DIR, has been set to specify the install directory of BLAS
-- Looking for BLAS -- mkl.h not found
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - found
-- Found Threads: TRUE
-- Looking for MKL BLAS: not found
-- Looking for Goto BLAS: not found
-- Looking for Open BLAS: not found
-- Looking for Eigen BLAS: not found
-- Looking for Eigen BLAS: not found
-- Looking for Atlas BLAS: not found
-- Looking for PhiPACK BLAS: not found
-- Looking for CXML BLAS: not found
-- Looking for DXML BLAS: not found
-- Looking for SunPerf BLAS: not found
-- Looking for SCSL BLAS: not found
-- Looking for SGIMATH BLAS: not found
-- Looking for IBM ESSL BLAS: not found
-- Looking for IBM ESSL MT BLAS: not found
-- Looking for ACML BLAS: not found
-- Looking for ACML BLAS: not found
-- Looking for ACML BLAS: not found
-- Looking for Apple BLAS: not found
-- Looking for NAS BLAS: not found
-- Looking for Fortran sgemm
-- Looking for Fortran sgemm - not found
-- Looking for Generic BLAS: not found
-- Looking for Generic BLAS: not found
-- Looking for Generic BLAS: not found
-- Looking for Generic BLAS: not found
-- Looking for Generic BLAS: not found
CMake Warning at cmake/FindBLAS.cmake:1371 (message):
BLA_VENDOR has been set to All but blas libraries could not be found or
check of symbols failed.
Please indicate where to find blas libraries. You have three options:
- Option 1: Provide the installation directory of BLAS library with cmake
option: -DBLAS_DIR=your/path/to/blas
- Option 2: Provide the directory where to find BLAS libraries with cmake
option: -DBLAS_LIBDIR=your/path/to/blas/libs
- Option 3: Update your environment variable (Linux: LD_LIBRARY_PATH,
Windows: LIB, Mac: DYLD_LIBRARY_PATH)

To follow libraries detection more precisely you can activate a verbose
mode with -DBLAS_VERBOSE=ON at cmake configure.
You could also specify a BLAS vendor to look for by setting
-DBLA_VENDOR=blas_vendor_name.
List of possible BLAS vendor: Goto, ATLAS PhiPACK, CXML, DXML, SunPerf,
SCSL, SGIMATH, IBMESSL, Intel10_32 (intel mkl v10 32 bit),Intel10_64lp
(intel mkl v10 64 bit, lp thread model, lp64 model), Intel10_64lp_seq
(intel mkl v10 64 bit, sequential code, lp64 model),Intel( older versions
of mkl 32 and 64 bit), ACML, ACML_MP, ACML_GPU, Apple, NAS, Generic
Call Stack (most recent call first):
cmake/FindLAPACK.cmake:138 (find_package)
test/CMakeLists.txt:30 (find_package)
-- A library with BLAS API not found. Please specify library location.
-- LAPACK requires BLAS.
-- Could NOT find CHOLMOD (missing: CHOLMOD_INCLUDES CHOLMOD_LIBRARIES)
-- Could NOT find UMFPACK (missing: UMFPACK_INCLUDES UMFPACK_LIBRARIES)
-- Could NOT find SUPERLU (missing: SUPERLU_INCLUDES SUPERLU_LIBRARIES SUPERLU_VERSION_OK)
-- Found PkgConfig: /usr/local/bin/pkg-config (found version "0.29.1")
-- Checking for one of the modules 'hwloc'
-- Looking for Fortran sgemm
CMake Error: CMAKE_Fortran_COMPILER not set, after EnableLanguage
CMake Error: Internal CMake error, TryCompile configure of cmake failed
-- Looking for Fortran sgemm - not found
-- Could NOT find BLAS (missing: BLAS_SEQ_LIBRARIES BLAS_LIBRARY_DIRS)
-- Performing Test SCOTCH_Num_4
-- Performing Test SCOTCH_Num_4 - Failed
-- Performing Test SCOTCH_Num_8
-- Performing Test SCOTCH_Num_8 - Failed
-- Could NOT find MPI_C (missing: MPI_C_LIBRARIES MPI_C_INCLUDE_PATH)
-- Could NOT find MPI_CXX (missing: MPI_CXX_LIBRARIES MPI_CXX_INCLUDE_PATH)
-- Performing Test PTSCOTCH_Num_4
-- Performing Test PTSCOTCH_Num_4 - Failed
-- Performing Test PTSCOTCH_Num_8
-- Performing Test PTSCOTCH_Num_8 - Failed
-- A version of Pastix has been found but pastix_nompi.h does not exist in the include directory. Because Eigen tests require a version without MPI, we disable the Pastix backend.
-- Could NOT find SPQR (missing: SPQR_INCLUDES SPQR_LIBRARIES)
-- Found unsuitable Qt version "" from NOTFOUND
-- Performing Test COMPILER_SUPPORT_FASTMATH
-- Performing Test COMPILER_SUPPORT_FASTMATH - Success
-- Boost version: 1.62.0
-- Could NOT find GOOGLEHASH (missing: GOOGLEHASH_INCLUDES GOOGLEHASH_COMPILE)
-- Could NOT find ADOLC (missing: ADOLC_INCLUDES ADOLC_LIBRARIES)
-- Found MPFR: /usr/local/include (Required is at least version "2.3.0")
-- Found GMP: /usr/local/include
-- Could NOT find FFTW (missing: FFTW_INCLUDES FFTW_LIBRARIES)
-- Found OpenGL: /System/Library/Frameworks/OpenGL.framework
-- Found GLUT: /System/Library/Frameworks/GLUT.framework
CUDA_TOOLKIT_ROOT_DIR not found or specified
-- Could NOT find CUDA (missing: CUDA_TOOLKIT_ROOT_DIR CUDA_NVCC_EXECUTABLE CUDA_INCLUDE_DIRS CUDA_CUDART_LIBRARY) (Required is at least version "7.0")
-- Found unsuitable Qt version "" from NOTFOUND
-- Qt4 not found, so disabling the mandelbrot and opengl demos
-- Could NOT find CHOLMOD (missing: CHOLMOD_INCLUDES CHOLMOD_LIBRARIES)
-- Could NOT find UMFPACK (missing: UMFPACK_INCLUDES UMFPACK_LIBRARIES)
-- Could NOT find SUPERLU (missing: SUPERLU_INCLUDES SUPERLU_LIBRARIES SUPERLU_VERSION_OK)
-- Checking for one of the modules 'hwloc'
-- Could NOT find BLAS (missing: BLAS_LIBRARY_DIRS)
-- Could NOT find MPI_C (missing: MPI_C_LIBRARIES MPI_C_INCLUDE_PATH)
-- Could NOT find MPI_CXX (missing: MPI_CXX_LIBRARIES MPI_CXX_INCLUDE_PATH)
-- A version of Pastix has been found but pastix_nompi.h does not exist in the include directory. Because Eigen tests require a version without MPI, we disable the Pastix backend.
CMake Warning (dev) in bench/spbench/CMakeLists.txt:
A logical block opening on the line
/tmp/eigen/bench/spbench/CMakeLists.txt:51 (if)
closes on the line
/tmp/eigen/bench/spbench/CMakeLists.txt:63 (endif)
with mis-matching arguments.
This warning is for project developers. Use -Wno-dev to suppress it.
-- ************************************************************
-- *** Eigen's unit tests configuration summary ***
-- ************************************************************
--
-- Build type: Release
-- Build site: Traviss-Mac-5.local
-- Build string: darwin-16.1.0-llvm-clang++-8.0.0-sse2-64bit
-- Enabled backends: Boost.Multiprecision, MPFR C++,
-- Disabled backends: Cholmod, UmfPack, SuperLU, PaStiX, METIS, SPQR, Qt4 support, GoogleHash, Adolc, fftw, OpenGL,
-- Default order: Column-major
-- Maximal matrix/vector size: 320
-- SSE2: Using architecture defaults
-- SSE3: Using architecture defaults
-- SSSE3: Using architecture defaults
-- SSE4.1: Using architecture defaults
-- SSE4.2: Using architecture defaults
-- AVX: Using architecture defaults
-- FMA: Using architecture defaults
-- AVX512: Using architecture defaults
-- Altivec: Using architecture defaults
-- VSX: Using architecture defaults
-- ARM NEON: Using architecture defaults
-- ARMv8 NEON: Using architecture defaults
-- S390X ZVECTOR: Using architecture defaults
-- C++11: OFF
-- SYCL: OFF
-- CUDA: OFF
--
CXX: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++
CXX_FLAGS: -pedantic -Wall -Wextra -Wundef -Wcast-align -Wchar-subscripts -Wnon-virtual-dtor -Wunused-local-typedefs -Wpointer-arith -Wwrite-strings -Wformat-security -Wshorten-64-to-32 -Wenum-conversion -Wc++11-extensions -Wdouble-promotion -Wshadow -Wno-variadic-macros -Wno-long-long -fno-check-new -fno-common -fstrict-aliasing -Qunused-arguments -ansi
Sparse lib flags:
-- ************************************************************
--
-- Configured Eigen 3.3.3
--
-- Some things you can do now:
-- --------------+--------------------------------------------------------------
-- Command | Description
-- --------------+--------------------------------------------------------------
-- make install | Install Eigen. Headers will be installed to:
-- | <CMAKE_INSTALL_PREFIX>/<INCLUDE_INSTALL_DIR>
-- | Using the following values:
-- | CMAKE_INSTALL_PREFIX: /usr/local
-- | INCLUDE_INSTALL_DIR: include/eigen3
-- | Change the install location of Eigen headers using:
-- | cmake . -DCMAKE_INSTALL_PREFIX=yourprefix
-- | Or:
-- | cmake . -DINCLUDE_INSTALL_DIR=yourdir
-- make doc | Generate the API documentation, requires Doxygen & LaTeX
-- make check | Build and run the unit-tests. Read this page:
-- | http://eigen.tuxfamily.org/index.php?title=Tests
-- make blas | Build BLAS library (not the same thing as Eigen)
-- make uninstall| Removes files installed by make install
-- --------------+--------------------------------------------------------------
--
-- Configuring incomplete, errors occurred!
See also "/tmp/eigen-build/CMakeFiles/CMakeOutput.log".
See also "/tmp/eigen-build/CMakeFiles/CMakeError.log".
The command "if [ $TRAVIS_OS_NAME == osx ]; then hg clone https://bitbucket.org/eigen/eigen#3.3 /tmp/eigen && mkdir /tmp/eigen-build && cd /tmp/eigen-build && cmake . /tmp/eigen && make -j3 && sudo make install && cd -; fi" failed and exited with 1 during .

it seems that there is a problem with the fortran compiler detection:

-- The Fortran compiler identification is unknown
[...]
CMake Error: CMAKE_Fortran_COMPILER not set, after EnableLanguage
CMake Error: Internal CMake error, TryCompile configure of cmake failed

Perhaps running cmake with: FC="nofortran" cmake . /tmp/eigen might help.

I cannot reproduce on my OSX setup.