I manually set those CVXOPT_... variables in the spkg-install file for now and
building cvxopt then succeeded.
Building Sage now almost completes, but the file src/sage/libs/readline.pyx
fails to compile with these errors:
[1/1] gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g
-fwrapv -O3 -Wall -Wno-unused -I./sage/cpython -Isage/cpython
-I/Applications/SageMath/local/include -I/Applications/SageMath/src
-I/Applications/SageMath/src/sage/ext
-I/Applications/SageMath/local/include/python3.7m
-I/Applications/SageMath/local/lib/python3.7/site-packages/numpy/core/include
-Ibuild/cythonized -I/Applications/SageMath/local/include/python3.7m -c
build/cythonized/sage/libs/readline.c -o
build/temp.macosx-10.9-x86_64-3.7/build/cythonized/sage/libs/readline.o
-fno-strict-aliasing -DCYTHON_CLINE_IN_TRACEBACK=1 -std=c99
build/cythonized/sage/libs/readline.c:1446:36: error: use of undeclared
identifier 'rl_catch_signals'
__pyx_t_1 = __Pyx_PyInt_From_int(rl_catch_signals); if
(unlikely(!__pyx_t_1)) __PYX_ERR(0, 87, __pyx_L1_error)
^
build/cythonized/sage/libs/readline.c:1468:36: error: use of undeclared
identifier 'rl_catch_sigwinch'
__pyx_t_1 = __Pyx_PyInt_From_int(rl_catch_sigwinch); if
(unlikely(!__pyx_t_1)) __PYX_ERR(0, 88, __pyx_L1_error)
^
build/cythonized/sage/libs/readline.c:1542:36: warning: implicit
declaration of function 'rl_set_signals' is invalid in C99
[-Wimplicit-function-declaration]
__pyx_t_1 = __Pyx_PyInt_From_int(rl_set_signals()); if
(unlikely(!__pyx_t_1)) __PYX_ERR(0, 104, __pyx_L1_error)
^
build/cythonized/sage/libs/readline.c:1604:36: warning: implicit
declaration of function 'rl_clear_signals' is invalid in C99
[-Wimplicit-function-declaration]
__pyx_t_1 = __Pyx_PyInt_From_int(rl_clear_signals()); if
(unlikely(!__pyx_t_1)) __PYX_ERR(0, 120, __pyx_L1_error)
^
build/cythonized/sage/libs/readline.c:1849:36: error: passing 'void' to
parameter of incompatible type 'int'
__pyx_t_1 = __Pyx_PyInt_From_int(rl_forced_update_display()); if
(unlikely(!__pyx_t_1)) __PYX_ERR(0, 190, __pyx_L1_error)
^~~~~~~~~~~~~~~~~~~~~~~~~~
...
The Homebrew readline is version 8.0.1. In particular, the header file
`/usr/local/opt/readline/include/readline/readline.h` does contain
`rl_catch_signals`, `rl_catch_sigwinch` and `rl_clear_signals`.
The system readline in `/usr/include/readline/readline.h` does not contain
these though, so it looks like that is used instead.
> Am 12.01.2020 um 10:58 schrieb Dima Pasechnik <dimp...@gmail.com>:
>
> On Sun, Jan 12, 2020 at 12:10 AM Markus Wageringel
> <markus.wagerin...@gmail.com <mailto:markus.wagerin...@gmail.com>> wrote:
>>
>> On macOS 10.13.6, trying to make use of #27870 using Homebrew's openblas,
>> the build fails for me at cvxopt:
>>
>> gcc -bundle -undefined dynamic_lookup -L/Applications/SageMath/local/lib
>> -Wl,-rpath,/Applications/SageMath/local/lib -L/usr/local/opt/openssl/lib -L.
>> -L/Applications/SageMath/local/lib
>> -Wl,-rpath,/Applications/SageMath/local/lib -L/usr/local/opt/openssl/lib
>> -L/Applications/SageMath/local/lib
>> -Wl,-rpath,/Applications/SageMath/local/lib
>> build/temp.macosx-10.9-x86_64-3.7/src/C/gsl.o -L/Applications/SageMath/local
>> -L/Applications/SageMath/local -L/Applications/SageMath/local/lib -lm -lgsl
>> -lopenblas -o
>> build/lib.macosx-10.9-x86_64-3.7/cvxopt/gsl.cpython-37m-darwin.so
>> ld: library not found for -lopenblas
>> clang: error: linker command failed with exit code 1 (use -v to see
>> invocation)
>> error: command 'gcc' failed with exit status 1
>> Running setup.py install for cvxopt: finished with status 'error'
>>
>> As openblas and readline are keg-only, I ran configure as
>>
>> ./configure \
>> LDFLAGS="-L/usr/local/opt/readline/lib -L/usr/local/opt/openblas/lib
>> -L/usr/local/opt/mpfr/lib" \
>> CPPFLAGS="-I/usr/local/opt/readline/include
>> -I/usr/local/opt/openblas/include" \
>>
>> PKG_CONFIG_PATH="/usr/local/opt/readline/lib/pkgconfig:/usr/local/opt/openblas/lib/pkgconfig"
>>
>> but cvxopt does not seem to use this.
>
> cvxopt really needs env.vars CVXOPT_BLAS_LIB_DIR, CVXOPT_BLAS_LIB,
> CVXOPT_LAPACK_LIB set, it does not use pkgconf.
> (but it should).
> We can propose an upstream fix for this, and meanwhile set these vars
> in spkg-install
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