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build does not find eigen3 when not in compiler default search path
Given your call for portability testing, I tried to build this on NetBSD. After cmake failing because of eigen3 not being present (fair enough - I didn't read the build instructions :-) I installed version 3.3.9 via pkgsrc which put it in /usr/pkg. Then, cmake found it (likely via pkg-config, which has /usr/pkg/lib/pkgconfig in the default path), but apparently did not add the --cflags to the build, resulting in
[ 2%] Building CXX object CMakeFiles/common.dir/mnistreader.cc.o
In file included from /home/gdt/SOFTWARE/AI/hello-dl/mnistreader.hh:8:0,
from /home/gdt/SOFTWARE/AI/hello-dl/mnistreader.cc:1:
/home/gdt/SOFTWARE/AI/hello-dl/tensor2.hh:10:10: fatal error: Eigen/Dense: No such file or directory
#include <Eigen/Dense>
^~~~~~~~~~~~~
compilation terminated.
*** Error code 1
pkg-config seems ok:
$ pkg-config --cflags eigen3
-I/usr/pkg/include/eigen3
Perhaps this is an issue in eigen3's cmake support.
feenableexcept undefined when building on macOS
Output from building on macOS:
[ 2%] Building CXX object CMakeFiles/common.dir/mnistreader.cc.o
[ 4%] Building CXX object CMakeFiles/common.dir/textsupport.cc.o
clang: clang: warning: argument unused during compilation: '-msse2' [-Wunused-command-line-argument]warning:
clang: warning: argument unused during compilation: '-mavx' [-Wunused-command-line-argument]
argument unused during compilation: '-msse2' [-Wunused-command-line-argument]
clang: clangwarning: : warning: argument unused during compilation: '-mavx' [-Wunused-command-line-argument]
argument unused during compilation: '-mavx2' [-Wunused-command-line-argument]clang:
clangwarning: : argument unused during compilation: '-mavx2' [-Wunused-command-line-argument]warning:
clang: warning: argument unused during compilation: '-mfma' [-Wunused-command-line-argument]
argument unused during compilation: '-mfma' [-Wunused-command-line-argument]
[ 4%] Built target common
[ 14%] Building CXX object CMakeFiles/tensor-convo.dir/tensor-convo.cc.o
[ 14%] Building CXX object CMakeFiles/img-ocr.dir/img-ocr.cc.o
[ 14%] Building CXX object CMakeFiles/tensor-convo-par.dir/tensor-convo-par.cc.o
[ 14%] Building CXX object CMakeFiles/tensor-relu.dir/tensor-relu.cc.o
clang: warning: argument unused during compilation: '-msse2' [-Wunused-command-line-argument]
clang: warning: argument unused during compilation: '-mavx' [-Wunused-command-line-argument]
clang: clang: warning: argument unused during compilation: '-msse2' [-Wunused-command-line-argument]
clangwarning: : warning: argument unused during compilation: '-mavx' [-Wunused-command-line-argument]
argument unused during compilation: '-mavx2' [-Wunused-command-line-argument]
clang: clang: clangwarning: warning: : warning: argument unused during compilation: '-mfma' [-Wunused-command-line-argument]argument unused during compilation: '-msse2' [-Wunused-command-line-argument]
clang: argument unused during compilation: '-mavx2' [-Wunused-command-line-argument]warning:
argument unused during compilation: '-msse2' [-Wunused-command-line-argument]
clang: warning: argument unused during compilation: '-mavx' [-Wunused-command-line-argument]
clang: warning: clang: argument unused during compilation: '-mavx2' [-Wunused-command-line-argument]warning:
argument unused during compilation: '-mfma' [-Wunused-command-line-argument]
clang: warning: argument unused during compilation: '-mavx' [-Wunused-command-line-argument]
clang: warning: argument unused during compilation: '-mavx2' [-Wunused-command-line-argument]
clang: warning: clang: warning: argument unused during compilation: '-mfma' [-Wunused-command-line-argument]
argument unused during compilation: '-mfma' [-Wunused-command-line-argument]
/Users/hvanderschuur/Projects/dev/hello-dl/img-ocr.cc:39:27: warning: lambda capture 'rows' is not used [-Wunused-lambda-capture]
auto getintens=[&data, &rows, &cols](int c, int r) {
~~~^~~~
/Users/hvanderschuur/Projects/dev/hello-dl/tensor-relu.cc:90:3: error: use of undeclared identifier 'feenableexcept'; did you mean 'feraiseexcept'?
feenableexcept(FE_DIVBYZERO | FE_INVALID | FE_OVERFLOW );
^~~~~~~~~~~~~~
feraiseexcept
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk/usr/include/fenv.h:299:12: note: 'feraiseexcept' declared here
extern int feraiseexcept(int /* excepts */);
^
/Users/hvanderschuur/Projects/dev/hello-dl/tensor-convo.cc:67:3: error: use of undeclared identifier 'feenableexcept'; did you mean 'feraiseexcept'?
feenableexcept(FE_DIVBYZERO | FE_INVALID | FE_OVERFLOW );
^~~~~~~~~~~~~~
feraiseexcept
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk/usr/include/fenv.h:299:12: note: 'feraiseexcept' declared here
extern int feraiseexcept(int /* excepts */);
^
1 error generated.
make[2]: *** [CMakeFiles/tensor-relu.dir/tensor-relu.cc.o] Error 1
make[1]: *** [CMakeFiles/tensor-relu.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
1 error generated.
make[2]: *** [CMakeFiles/tensor-convo.dir/tensor-convo.cc.o] Error 1
make[1]: *** [CMakeFiles/tensor-convo.dir/all] Error 2
[ 17%] Building CXX object CMakeFiles/tensor-convo-par.dir/ext/sqlitewriter/sqlwriter.cc.o
clang: warning: argument unused during compilation: '-msse2' [-Wunused-command-line-argument]
clang: warning: argument unused during compilation: '-mavx' [-Wunused-command-line-argument]
clang: warning: argument unused during compilation: '-mavx2' [-Wunused-command-line-argument]
clang: warning: argument unused during compilation: '-mfma' [-Wunused-command-line-argument]
[ 19%] Building CXX object CMakeFiles/img-ocr.dir/vizi.cc.o
clang: warning: argument unused during compilation: '-msse2' [-Wunused-command-line-argument]
clang: warning: argument unused during compilation: '-mavx' [-Wunused-command-line-argument]
clang: warning: argument unused during compilation: '-mavx2' [-Wunused-command-line-argument]
clang: warning: argument unused during compilation: '-mfma' [-Wunused-command-line-argument]
In file included from /Users/hvanderschuur/Projects/dev/hello-dl/vizi.cc:7:
/Users/hvanderschuur/Projects/dev/hello-dl/ext/stb/stb_image_write.h:776:13: warning: 'sprintf' is deprecated: This function is provided for compatibility reasons only. Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead. [-Wdeprecated-declarations]
len = sprintf(buffer, "EXPOSURE= 1.0000000000000\n\n-Y %d +X %d\n", y, x);
^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk/usr/include/stdio.h:188:1: note: 'sprintf' has been explicitly marked deprecated here
__deprecated_msg("This function is provided for compatibility reasons only. Due to security concerns inherent in the design of sprintf(3), it is highly recommended that you use snprintf(3) instead.")
^
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX13.3.sdk/usr/include/sys/cdefs.h:215:48: note: expanded from macro '__deprecated_msg'
#define __deprecated_msg(_msg) __attribute__((__deprecated__(_msg)))
^
/Users/hvanderschuur/Projects/dev/hello-dl/vizi.cc:66:22: warning: lambda capture 'out' is not used [-Wunused-lambda-capture]
auto box = [&pix, &out](int col, int row, int w, int h, uint8_t cr, uint8_t cg, uint8_t cb) {
~~~^~~
1 warning generated.
2 warnings generated.
[ 21%] Linking CXX executable img-ocr
[ 21%] Built target img-ocr
[ 24%] Linking CXX executable tensor-convo-par
[ 24%] Built target tensor-convo-par
make: *** [all] Error 2
Found some articles that seem to provide a solution… unfortunately, I lack the skills to apply it :-)
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