This allows using new features of C++17 conditionally.
Simplify also the code which checks and sets the C++ version.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
This fixes compiler warnings from clang++ like these ones:
src/ccutil/params.cpp:34:9: warning: macro is not used [-Wunused-macros]
src/cutil/oldlist.cpp:67:9: warning: macro is not used [-Wunused-macros]
src/cutil/oldlist.cpp:68:9: warning: macro is not used [-Wunused-macros]
src/cutil/oldlist.cpp:78:9: warning: macro is not used [-Wunused-macros]
Signed-off-by: Stefan Weil <sw@weilnetz.de>
AC_CHECK_FILE does not work in cross builds. Such builds aborted.
Replace it by AC_CHECK_HEADERS. This fixes cross builds.
To enable TensorFlow in cross builds, more work is needed.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
That fixes several warnings from clang++ like the following one:
src/training/combine_lang_model.cpp:36:1: warning: no previous extern declaration for non-static variable 'FLAGS_lang_is_rtl' [-Wmissing-variable-declarations]
Signed-off-by: Stefan Weil <sw@weilnetz.de>
That fixes several warnings from clang++ like the following one:
src/training/commontraining.cpp:95:1: warning: no previous extern declaration for non-static variable 'FLAGS_D' [-Wmissing-variable-declarations]
Signed-off-by: Stefan Weil <sw@weilnetz.de>
This fixes lots of compiler warnings like these ones:
src/api/baseapi.cpp:113:13: warning: no previous extern declaration for non-static variable 'kInputFile' [-Wmissing-variable-declarations]
src/api/baseapi.cpp:117:13: warning: no previous extern declaration for non-static variable 'kOldVarsFile' [-Wmissing-variable-declarations]
src/api/baseapi.cpp:97:10: warning: no previous extern declaration for non-static variable 'stream_filelist' [-Wmissing-variable-declarations]
src/ccmain/equationdetect.cpp:46:10: warning: no previous extern declaration for non-static variable 'equationdetect_save_bi_image' [-Wmissing-variable-declarations]
Signed-off-by: Stefan Weil <sw@weilnetz.de>
This also fixes warnings like the following one from clang++:
src/ccmain/pgedit.cpp:114:15: warning: declaration requires a global constructor [-Wglobal-constructors]
Signed-off-by: Stefan Weil <sw@weilnetz.de>
This also fixes some warnings from clang++:
src/classify/featdefs.cpp:47:15: warning: declaration requires a global constructor [-Wglobal-constructors]
src/classify/featdefs.cpp:57:15: warning: declaration requires a global constructor [-Wglobal-constructors]
src/classify/featdefs.cpp:66:15: warning: declaration requires a global constructor [-Wglobal-constructors]
src/classify/featdefs.cpp:75:15: warning: declaration requires a global constructor [-Wglobal-constructors]
Signed-off-by: Stefan Weil <sw@weilnetz.de>
This looks for one of the header files which are included by Tesseract.
It currently uses a hard coded path which works for Debian / Ubuntu.
Simplify also the rules for linking Tensorflow.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
It expects include files in /usr/include/tensorflow.
* Add configure option --with-tensorflow (disabled by default)
* Fix data type tensorflow::int64
* Remove "third_party/" in include statements
* Add dummy implementations for Backward and DebugWeights in TFNetwork
* Add files generated with protoc from tfnetwork.proto
(so the Tensorflow sources are not needed for the build)
* Update Makefiles
Signed-off-by: Stefan Weil <sw@weilnetz.de>
sqrt(0.5) = 1 / sqrt(2) can be replaced by the macro M_SQRT1_2.
This also fixes a compiler warning:
src/lstm/lstmtrainer.cpp:51:14: warning: declaration requires a global constructor [-Wglobal-constructors]
Signed-off-by: Stefan Weil <sw@weilnetz.de>
That debugging code uses very much memory and is no longer useful.
text data bss dec hex filename
815 0 262144 262959 4032f src/ccutil/globaloc.o
Remove also the function err_exit which was only used in ccmain/reject.cpp.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reduce the maximum message size from 64 KiB to 2 KiB which still should
be large enought for trace messages.
Create the smaller message on the stack instead of using a global
array to allow reentrancy and to reduce the memory use of Tesseract.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
It is defined for all platforms when math.h or cmath is included
after defining the macro _USE_MATH_DEFINES.
Define _USE_MATH_DEFINES before any include statement to make sure
that M_PI gets defined. It is not necessary to define it conditionally
only for Windows.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
AX_CHECK_COMPILE_FLAG fails if it is used with -Werror and the compiler
raises error -Wextra-semi-stmt:
configure:4224: checking whether C++ compiler accepts -mavx
configure:4243: clang++-8 -c -g -O2 -Wall -Wextra -Wpedantic -Weverything -Wno-c++98-compat -Wno-c++98-compat-pedantic -march=native -Werror -Wno-unused-macros -mavx conftest.cpp >&5
conftest.cpp:20:3: error: empty expression statement has no effect; remove unnecessary ';' to silence this warning [-Werror,-Wextra-semi-stmt]
;
^
1 error generated.
Add -Wno-extra-semi-stmt to disable those errors if possible.
Signed-off-by: Stefan Weil <sw@weilnetz.de>
This fixes lots of warnings related to ERRCODE like the following one:
src/ccutil/errcode.h:81:15: warning:
declaration requires a global constructor [-Wglobal-constructors]
Signed-off-by: Stefan Weil <sw@weilnetz.de>
