我正在从源代码构建 Octave 以包含 ATLAS 库。我是否正确包含它们？我不知道对 Octave 配置脚本有什么期望。我发现“-llapack”可疑地通用。
./configure --with-lapack=/usr/local/atlas
Source directory: .
Installation prefix: /usr/local
C compiler: gcc -Wall -W -Wshadow -Wformat -Wpointer-arith -Wmissing-prototypes -Wstrict-prototypes -Wwrite-strings -Wcast-align -Wcast-qual -g -O2 -pthread
C++ compiler: g++ -Wall -W -Wshadow -Wold-style-cast -Wformat -Wpointer-arith -Wwrite-strings -Wcast-align -Wcast-qual -g -O2 -pthread
Fortran compiler: gfortran -O
Fortran libraries: -L/usr/lib/gcc/x86_64-linux-gnu/4.8 -L/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../x86_64-linux-gnu -L/usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib -L/lib/x86_64-linux-gnu -L/lib/../lib -L/usr/lib/x86_64-linux-gnu -L/usr/lib/../lib -L/usr/lib/gcc/x86_64-linux-gnu/4.8/../../.. -lgfortran -lm -lquadmath
Lex libraries:
LIBS: -lutil -lm
...
HDF5 libraries: -lhdf5
Java home: /usr/lib/jvm/java-7-openjdk-amd64
Java JVM path: /usr/lib/jvm/java-7-openjdk-amd64/jre/lib/amd64/server
Java CPPFLAGS: -I/usr/lib/jvm/java-7-openjdk-amd64/include -I/usr/lib/jvm/java-7-openjdk-amd64/include/linux
Java libraries:
LAPACK libraries: -llapack
LLVM CPPFLAGS:
LLVM LDFLAGS:
LLVM libraries:
Magick++ CPPFLAGS: -I/usr/include/GraphicsMagick
Magick++ LDFLAGS:
Magick++ libraries: -lGraphicsMagick++ -lGraphicsMagick
...
allusers@vbubuntu:~/Downloads/octave-3.8.1$ ll -R /usr/local/atlas/
/usr/local/atlas/:
total 16
drwxr-xr-x 4 root root 4096 May 25 23:01 ./
drwxr-xr-x 13 root root 4096 May 25 23:01 ../
drwxr-xr-x 3 root root 4096 May 25 23:01 include/
drwxr-xr-x 2 root root 4096 May 25 23:01 lib/
/usr/local/atlas/include:
total 60
drwxr-xr-x 3 root root 4096 May 25 23:01 ./
drwxr-xr-x 4 root root 4096 May 25 23:01 ../
drwxr-xr-x 2 root root 4096 May 25 23:01 atlas/
-rw-r--r-- 1 root root 33962 May 25 23:06 cblas.h
-rw-r--r-- 1 root root 9708 May 25 23:06 clapack.h
/usr/local/atlas/include/atlas:
total 604
drwxr-xr-x 2 root root 4096 May 25 23:01 ./
drwxr-xr-x 3 root root 4096 May 25 23:01 ../
-rw-r--r-- 1 root root 2089 May 25 23:06 atlas_buildinfo.h
-rw-r--r-- 1 root root 90 May 25 23:06 atlas_cacheedge.h
...
-rw-r--r-- 1 root root 2716 May 25 23:06 zmm.h
-rw-r--r-- 1 root root 552 May 25 23:06 zXover.h
/usr/local/atlas/lib:
total 26548
drwxr-xr-x 2 root root 4096 May 25 23:01 ./
drwxr-xr-x 4 root root 4096 May 25 23:01 ../
-rw-r--r-- 1 root root 14165306 May 25 23:06 libatlas.a
-rw-r--r-- 1 root root 455844 May 25 23:06 libcblas.a
-rw-r--r-- 1 root root 572392 May 25 23:06 libf77blas.a
-rw-r--r-- 1 root root 10942494 May 25 23:06 liblapack.a
-rw-r--r-- 1 root root 456426 May 25 23:06 libptcblas.a
-rw-r--r-- 1 root root 572788 May 25 23:06 libptf77blas.a
allusers@vbubuntu:~/Downloads/octave-3.8.1$
附加信息：
在配置文件中发送垃圾邮件回显语句后，我注意到以下内容：
这一行：
$as_echo "$as_me:${as_lineno-$LINENO}: checking for $cheev in $LAPACK_LIBS" >&5
里面有正确的 $LAPACK_LIBS 变量（我传入的那个）。正是这一行似乎是在我告诉它的 lapack 库中找不到某些东西的第一个失败：
if ac_fn_c_try_link "$LINENO"; then :
就在那一行之前，我看到配置文件定义了一些我相信它正在运行的 c 代码，以确定是否在库中找到了“cheeve”。
checking for cheev_ in /usr/local/atlas/lib/... no
checking for cheev_... no
checking for cheev_ in -llapack... yes
配置脚本
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
/* Override any GCC internal prototype to avoid an error.
Use char because int might match the return type of a GCC
builtin and then its argument prototype would still apply. */
#ifdef __cplusplus
extern "C"
#endif
char $cheev ();
#ifdef F77_DUMMY_MAIN
# ifdef __cplusplus
extern "C"
# endif
int F77_DUMMY_MAIN() { return 1; }
#endif
int
main ()
{
return $cheev ();
;
return 0;
}
_ACEOF
此时C代码已经超出了我的理解水平。似乎与是否调用了 F77 编译器（编译器翻译器？？）有关。