我想在ubuntu saucy上安装gsl gem
我安装了相关的gsl包
sudo apt-get install gsl-bin libgsl0-dev
但是安装gem失败了
In file included from /usr/include/ruby-1.9.1/ruby.h:32:0,
from ../include/rb_gsl_array.h:34,
from wavelet.c:13:
wavelet.c: In function ‘rb_gsl_wavelet_define_const’:
wavelet.c:155:45: error: ‘forward’ undeclared (first use in this function)
rb_define_const(klass, "FORWARD", INT2FIX(forward));
^
/usr/include/ruby-1.9.1/ruby/ruby.h:225:45: note: in definition of macro ‘INT2FIX’
#define INT2FIX(i) ((VALUE)(((SIGNED_VALUE)(i))<<1 | FIXNUM_FLAG))
^
wavelet.c:155:45: note: each undeclared identifier is reported only once for each function it appears in
rb_define_const(klass, "FORWARD", INT2FIX(forward));
^
/usr/include/ruby-1.9.1/ruby/ruby.h:225:45: note: in definition of macro ‘INT2FIX’
#define INT2FIX(i) ((VALUE)(((SIGNED_VALUE)(i))<<1 | FIXNUM_FLAG))
^
wavelet.c:157:46: error: ‘backward’ undeclared (first use in this function)
rb_define_const(klass, "BACKWARD", INT2FIX(backward));
^
/usr/include/ruby-1.9.1/ruby/ruby.h:225:45: note: in definition of macro ‘INT2FIX’
#define INT2FIX(i) ((VALUE)(((SIGNED_VALUE)(i))<<1 | FIXNUM_FLAG))
^
wavelet.c: In function ‘rb_gsl_wavelet_transform0’:
wavelet.c:194:31: error: ‘forward’ undeclared (first use in this function)
gsl_wavelet_direction dir = forward;
^
wavelet.c: In function ‘rb_gsl_wavelet2d’:
wavelet.c:534:31: error: ‘forward’ undeclared (first use in this function)
gsl_wavelet_direction dir = forward;
^
make: *** [wavelet.o] Error 1
问题与此类似：Problems installing gsl gem
不过，该线程的顶级解决方案不起作用—GSL1.14的源包在该地址不再可用。我想这会对很多俏皮的用户有用。
最佳答案
在linked问题上接受的答案在13.10中为我修正了这个问题，并做了一些小改动。
curl -O ftp.unicamp.br/pub/gnu/gsl/gsl-1.14.tar.gz
tar xvzf gsl-1.14.tar.gz
cd gsl-1.14
./configure
make
sudo make install
sudo gem install --conservative --no-ri --no-rdoc gsl
显然，在安装来自“任何FTP服务器”的包时都要小心：
关于ruby - Ubuntu Saucy上的Gsl gem(13.10)，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/19808027/