I'm playing with C++ and tesseract library in mac os. I installed tesseract library with brew install tesseract.
$ tesseract --version
tesseract 3.04.00
leptonica-1.72
libjpeg 8d : libpng 1.6.20 : libtiff 4.0.6 : zlib 1.2.5
I have tesseract installed in following path,
$ ll /usr/local/Cellar/tesseract/3.04.00/
total 72
-rw-r--r-- 1 prayagupd admin 440 Jul 11 2015 AUTHORS
-rw-r--r-- 1 prayagupd admin 1007 Jul 11 2015 COPYING
-rw-r--r-- 1 prayagupd admin 9773 Jul 11 2015 ChangeLog
-rw-r--r-- 1 prayagupd admin 332 Apr 6 19:44 INSTALL_RECEIPT.json
-rw-r--r-- 1 prayagupd admin 45 Jul 11 2015 NEWS
-rw-r--r-- 1 prayagupd admin 6326 Apr 6 19:44 README
drwxr-xr-x 3 prayagupd admin 102 Aug 21 2015 bin
drwxr-xr-x 3 prayagupd admin 102 Aug 21 2015 include
drwxr-xr-x 6 prayagupd admin 204 Aug 21 2015 lib
drwxr-xr-x 4 prayagupd admin 136 Aug 21 2015 share
What I want next is add tesseract lib to a C++ project (which I created with xcode). My assumption was tesseract is available to any c++ project once installed, but I can't see imports in my c++ project. It can't find the file baseapi.h.
I am following example from here - API examples
I feel like I still need to tesseract lib to c++ project in xcode, but don't know how.
Did you try looking under "$ ll /usr/local/Cellar/tesseract/3.04.00/api/" ? At least, it is where I found it on my tesseract folder.
Related
my env:
cmake version 3.16.3
OpenSSL 1.1.0f 25 May 2017
cpp-httplib v0.7.0
my sysroot
-rw-r--r-- 1 developer developer 41292 Jan 14 2018 libcrypt.a
-rw-r--r-- 1 developer developer 3143988 Mar 29 2018 libcrypto.a
lrwxrwxrwx 1 developer developer 16 Mar 29 2018 libcrypto.so -> libcrypto.so.1.1
lrwxrwxrwx 1 developer developer 18 Mar 29 2018 libcrypto.so.1.0.0 -> libcrypto.so.1.0.2
-rwxrw-r-- 1 developer developer 1497376 Mar 29 2018 libcrypto.so.1.0.2
-rw-r--r-- 1 developer developer 1827956 Mar 29 2018 libcrypto.so.1.1
lrwxrwxrwx 1 developer developer 46 Mar 29 2018 libcrypt.so -> ../../../lib/arm-linux-gnueabihf/libcrypt.so.1
-rw-r--r-- 1 developer developer 269496 Oct 7 2017 libssl3.so
-rw-r--r-- 1 developer developer 490932 Mar 29 2018 libssl.a
lrwxrwxrwx 1 developer developer 13 Mar 29 2018 libssl.so -> libssl.so.1.1
-rwxrw-r-- 1 developer developer 320924 Mar 29 2018 libssl.so.1.0.2
-rw-r--r-- 1 developer developer 327952 Mar 29 2018 libssl.so.1.1
the CMakeLists.txt in cpp-httplib specifics that:
set(_HTTPLIB_OPENSSL_MIN_VER "1.1.1")
...
find_package(OpenSSL ${_HTTPLIB_OPENSSL_MIN_VER} COMPONENTS Crypto SSL QUIET)
...
target_link_libraries(${PROJECT_NAME} ${_INTERFACE_OR_PUBLIC}
OpenSSL::SSL OpenSSL::Crypto
)
I included cpp-httplib in my project, I built it and checked shared object with ldd, then I got
libssl.so.1.1 => /usr/lib/arm-linux-gnueabihf/libssl.so.1.1 (0x7572c000)
libcrypto.so.1.0.2 => /usr/lib/arm-linux-gnueabihf/libcrypto.so.1.0.2 (0x75ac3000)
libcrypto.so.1.1 => /usr/lib/arm-linux-gnueabihf/libcrypto.so.1.1 (0x754c6000)
I understand the version isn't matched exactly due to the EXACT option is not set.
but why libssl is linking to 1.1 only and libcrypto is linking to 1.0.2 and 1.1?
Linux programmer here. I've installed some libraries such as Intell TBB on my Mac and am using Visual Studio Code to compile a source file that uses them:
#include "tbb/tbb.h"
#include "tbb/mutex.h"
But I get an error that these headers can't be found. Where are they installed and how can I tell VSC where to look for them.
Also is linking the same as in Linux?
If you installed using homebrew (which is generally a good idea since Apple doesn't provide any package management tools), you can see what files were installed where using:
brew ls tbb
Sample Output
/usr/local/Cellar/tbb/2018_U5/include/tbb/ (109 files)
/usr/local/Cellar/tbb/2018_U5/lib/libtbb.dylib
/usr/local/Cellar/tbb/2018_U5/lib/libtbbmalloc.dylib
/usr/local/Cellar/tbb/2018_U5/lib/libtbbmalloc_proxy.dylib
/usr/local/Cellar/tbb/2018_U5/lib/cmake/ (2 files)
/usr/local/Cellar/tbb/2018_U5/lib/python2.7/ (11 files)
/usr/local/Cellar/tbb/2018_U5/lib/ (2 other files)
Sometimes it only tells you half the story, so use:
brew ls --verbose tbb
It generally links all includes and libraries into /usr/local too, so use:
ls -l /usr/local/{include,lib} | grep tbb
Sample Output
lrwxr-xr-x 1 mark admin 33 Sep 17 2018 tbb -> ../Cellar/tbb/2018_U5/include/tbb
lrwxr-xr-x 1 mark admin 34 Sep 17 2018 libtbb.a -> ../Cellar/tbb/2018_U5/lib/libtbb.a
lrwxr-xr-x 1 mark admin 38 Sep 17 2018 libtbb.dylib -> ../Cellar/tbb/2018_U5/lib/libtbb.dylib
lrwxr-xr-x 1 mark admin 40 Sep 17 2018 libtbbmalloc.a -> ../Cellar/tbb/2018_U5/lib/libtbbmalloc.a
lrwxr-xr-x 1 mark admin 44 Sep 17 2018 libtbbmalloc.dylib -> ../Cellar/tbb/2018_U5/lib/libtbbmalloc.dylib
lrwxr-xr-x 1 mark admin 50 Sep 17 2018 libtbbmalloc_proxy.dylib -> ../Cellar/tbb/2018_U5/lib/libtbbmalloc_proxy.dylib
They are installed where you installed TBB. Usually, that's in /opt/intel if you used Intel packages. Just like on Linux.
I successfully build and installed kdev-control-flow-graph plugin after forking from sandsmark/kdev-control-flow-graph into my own fljx/kdev-control-flow-graph branch with minimal changes.
When I try to enable kdev-control-flow-graph view, though, I receive the error below:
"Unable to create a KGraphViewer instance, please verify that a compatible version is installed."
I am running on Kubuntu 16.04 with KDevelop 5.1.1 and kgraphviewer is installed:
# apt search kgraphviewer
Sorting... Pronto
Full Text Search... Pronto
kgraphviewer/xenial,now 4:2.1.90-0ubuntu2 amd64 [installed]
GraphViz dot graph viewer
kgraphviewer-dbg/xenial 4:2.1.90-0ubuntu2 amd64
GraphViz dot graph viewer for KDE 4 debug files
kgraphviewer-dev/xenial,now 4:2.1.90-0ubuntu2 amd64 [installed]
GraphViz dot graph viewer - devel files
libkgraphviewer2/xenial,now 4:2.1.90-0ubuntu2 amd64 [installed]
GraphViz dot graph viewer - libs
Then I build KGraphViewer from github and my system now has:
# find /usr -iname "*kgraphviewer*.so*" -ls
10571222 0 lrwxrwxrwx 1 root root 22 Ago 14 2015 /usr/lib/libkgraphviewer.so.2 -> libkgraphviewer.so.2.1
10571221 712 -rw-r--r-- 1 root root 728288 Ago 14 2015 /usr/lib/libkgraphviewer.so.2.1
10558158 2868 -rw-r--r-- 1 root root 2935024 Ago 17 16:32 /usr/lib/x86_64-linux-gnu/libkgraphviewer.so.3
11170876 0 lrwxrwxrwx 1 root root 57 Ago 17 16:37 /usr/lib/x86_64-linux-gnu/qt5/plugins/kdevplatform/27/kgraphviewerpart.so -> /usr/lib/x86_64-linux-gnu/qt5/plugins/kgraphviewerpart.so
10748549 180 -rw-r--r-- 1 root root 181312 Ago 17 16:32 /usr/lib/x86_64-linux-gnu/qt5/plugins/kgraphviewerpart.so
10558159 0 lrwxrwxrwx 1 root root 20 Ago 17 16:33 /usr/lib/x86_64-linux-gnu/libkgraphviewer.so -> libkgraphviewer.so.3
10571223 60 -rw-r--r-- 1 root root 60392 Ago 14 2015 /usr/lib/kde4/kgraphviewerpart.so
10571224 0 lrwxrwxrwx 1 root root 20 Ago 14 2015 /usr/lib/libkgraphviewer.so -> libkgraphviewer.so.2
Could anybody please give me any hints on how to make my plugin correctly find KGraphViewer KPart?
Thanks in advance.
KDE dev reporting in.
KGraphViewer is embedded into other applications using KParts framework. Porting KGraphViewer's KPart to Qt5/KF5 is near to release. The bad news is that kdev-control-flow-graph don't work with new KGraphViewer, so this plugin needs to be updated too.
Recently I've installed GTK+ 3.22 and its dependencies:
GLib 2.50
Pango 1.40
Gdk-Pixbuf 2.36
Atk 2.22
GObject-Introspection 1.50
The installation was successful because I tried using some new features of GTK+ 3.22 in one of my Python projects and it worked. (Before the installation, if I tried using a new feature, Python would raise an exception)
I am also working on a game which is written in C++ and I'm using Cocos2d-x to create it. Before installing the above libraries, everything worked fine. After the new packages were installed, I built my game in CodeBlocks and the following error message was shown:
In file: /usr/local/lib/libpangoft2-1.0.so.0 undefined reference to 'pango_matrix_get_font_scale_factors'
After some research, I've found out from here that in Pango 1.37 the pango_matrix_get_font_scale_factors function was added which is exactly the function that my project cannot find. As mentioned above, I've installed Pango 1.40 as a requirement for GTK +3.22.
I've also tried installing libpangoft2-1.0-0 with apt-get install and the output was: libpangoft2-1.0-0 is already the newest version.
Out of curiosity I've also looked in /usr/local/lib to see if I can find the libpangoft2-1.0-0 library.
In /usr/local/lib I've ran the following command: ls -la | grep pango which gave me the following output:
-rwxr-xr-x 1 root staff 1095 Oct 30 14:08 libpango-1.0.la
lrwxrwxrwx 1 root staff 24 Oct 30 14:08 libpango-1.0.so -> libpango-1.0.so.0.4000.3
lrwxrwxrwx 1 root staff 24 Oct 30 14:08 libpango-1.0.so.0 -> libpango-1.0.so.0.4000.3
-rwxr-xr-x 1 root staff 1073136 Oct 30 14:08 libpango-1.0.so.0.4000.3
-rwxr-xr-x 1 root staff 1263 Oct 30 14:08 libpangocairo-1.0.la
lrwxrwxrwx 1 root staff 29 Oct 30 14:08 libpangocairo-1.0.so -> libpangocairo-1.0.so.0.4000.3
lrwxrwxrwx 1 root staff 29 Oct 30 14:08 libpangocairo-1.0.so.0 -> libpangocairo-1.0.so.0.4000.3
-rwxr-xr-x 1 root staff 216216 Oct 30 14:08 libpangocairo-1.0.so.0.4000.3
-rwxr-xr-x 1 root staff 1209 Oct 30 14:08 libpangoft2-1.0.la
lrwxrwxrwx 1 root staff 27 Oct 30 14:08 libpangoft2-1.0.so -> libpangoft2-1.0.so.0.4000.3
lrwxrwxrwx 1 root staff 27 Oct 30 14:08 libpangoft2-1.0.so.0 -> libpangoft2-1.0.so.0.4000.3
-rwxr-xr-x 1 root staff 397496 Oct 30 14:08 libpangoft2-1.0.so.0.4000.3
-rwxr-xr-x 1 root staff 1265 Oct 30 14:08 libpangoxft-1.0.la
lrwxrwxrwx 1 root staff 27 Oct 30 14:08 libpangoxft-1.0.so -> libpangoxft-1.0.so.0.4000.3
lrwxrwxrwx 1 root staff 27 Oct 30 14:08 libpangoxft-1.0.so.0 -> libpangoxft-1.0.so.0.4000.3
-rwxr-xr-x 1 root staff 157240 Oct 30 14:08 libpangoxft-1.0.so.0.4000.3
I tried reinstalling Pango 1.40, but the undefined reference error still persists.
I would also like to mention:
I am using Debian 8
Since installing GTK+ 3.22 my Nautilus looks like this, notice how I do not have icons (only some kind of replacement) next to the Close button and next to my HDDs (note that the black rectangles were added by me)
I am using i3 as a window manager
My question is, how can I solve the In file: /usr/local/lib/libpangoft2-1.0.so.0 undefined reference to 'pango_matrix_get_font_scale_factors' error?
Update
If I uninstall Pango 1.40 I do not get the error anymore, but GTK+ 3.22 will not work.
Update2
Maybe Pango 1.40.3 is not installed correctly. I described an interesting problem I am having here.
Suppose I have an executable that uses qt library. I want to replace the shared object with a custom one. So how do I find the qt version so that I can build it myself from source?
P.S. All the files has names like libQt5**.so.5.
If you don't own a very special setup the exact version is part of the lib name; all others are symlinks. E. g. installed here is Qt 4.8.1:
$ ls -l /usr/lib/i386-linux-gnu/libQtCore.*
-rw-r--r-- 1 root root 680 Mai 27 2015 /usr/lib/i386-linux-gnu/libQtCore.prl
lrwxrwxrwx 1 root root 18 Mai 27 2015 /usr/lib/i386-linux-gnu/libQtCore.so -> libQtCore.so.4.8.1
lrwxrwxrwx 1 root root 18 Mai 27 2015 /usr/lib/i386-linux-gnu/libQtCore.so.4 -> libQtCore.so.4.8.1
lrwxrwxrwx 1 root root 18 Mai 27 2015 /usr/lib/i386-linux-gnu/libQtCore.so.4.8 -> libQtCore.so.4.8.1
-rw-r--r-- 1 root root 2,9M Mai 27 2015 /usr/lib/i386-linux-gnu/libQtCore.so.4.8.1
Additionally the libs provide macros and functions to access the version at build and run time: QT_VERSION, QT_VERSION_STR and qVersion().