Question

我像这样安装gmpy2：

yum install gmp-devel
yum install mpfr-devel
yum install libmpc-devel

但显示以下错误：

src/gmpy_mpc.c:1294: error: ‘gmpy_context’ has no member named ‘real_round’

src/gmpy_mpc.c:1294: error: ‘gmpy_context’ has no member named ‘real_round’

src/gmpy_mpc.c:1294: error: ‘gmpy_context’ has no member named ‘imag_round’

src/gmpy_mpc.c:1294: error: ‘gmpy_context’ has no member named ‘underflow’

src/gmpy_mpc.c:1294: error: ‘gmpy_context’ has no member named ‘trap_underflow’

src/gmpy_mpc.c:1294: error: ‘gmpy_context’ has no member named ‘overflow’

src/gmpy_mpc.c:1294: error: ‘gmpy_context’ has no member named ‘trap_overflow’

src/gmpy_mpc.c:1294: error: ‘gmpy_context’ has no member named ‘inexact’

 src/gmpy_mpc.c:1294: error: ‘gmpy_context’ has no member named ‘trap_inexact’

..........


src/gmpy2.c:969: error: ‘MPFR_RNDU’ undeclared (first use in this function)

src/gmpy2.c:970: error: ‘MPFR_RNDD’ undeclared (first use in this function)

src/gmpy2.c:971: error: ‘MPFR_RNDA’ undeclared (first use in this function)

error: command 'gcc' failed with exit status 1

什么错了？我已经安装了gmp，mpfr，mpc和他们的开发，但仍有很多错误。为什么呢？

Answer 1

我是gmpy2的维护者。

gmpy2需要相对较新版本的MPFR和MPC。如果setup.py无法找到正确的版本，则会显示以下警告消息：

----------------------------------------------------------------
setup.py was not able to detect the required versions of MPFR
and/or MPC. gmpy2 requires MPFR version 3.1.0 or greater and
MPC version 1.0.0 or greater. To specify a directory prefix that
contains the proper versions, use the --prefix=<dir> option.

In some circumstances, the correct versions may be present and
this warning can be ignored. If you have difficulties compiling
or running gmpy2, please try compiling with the --prefix option.

It is possible to compile gmpy2 without support for MPFR and MPC
but that is not a supported configuration. Beginning with v2.1.0,
MPFR and MPC will be required.

setup.py will continue and attempt to compile gmpy2.
-----------------------------------------------------------------

如果您无法安装最新版本的GMP，MPFR和MPC，那么您需要编译自己的GMP，MPFR和MPC版本，然后指示setup.py使用您的版本。我通常会将我的副本安装到/opt/local。以下说明假定源位于/opt/local/src，并且您使用的是具有sudo访问权限的管理员帐户。

$ cd /opt/local/src/gmp-6.0.0
$ ./configure --prefix=/opt/local
$ make
$ make check
$ make install
$ cd /opt/local/src/mfr-3.1.2
$ ./configure --prefix=/opt/local --with-gmp=/opt/local
$ make
$ make check
$ make install
$ cd /opt/local/src/mpc-1.0.2
$ ./configure --prefix=/opt/local --with-gmp=/opt/local --with-mpfr=/opt/local
$ make
$ make check
$ make install
$ cd /opt/local/src/gmpy2-2.0.3
$ python setup.py build_ext --prefix=/opt/local
$ sudo python setup.py install

如果您需要在各种系统（实验室或计算机集群）中分发gmpy2库，则可以编译静态链接版本。如果您需要这些说明，请告诉我。

如何安装gmpy2错误：'MPFR_RNDU'未声明（首次在此函数中使用）

1 个答案: