linux - Openssl header not found -- error -

-

i need compile libwebsocket library for arm target requires openssl functioning. getting following error when build latest libwebsocket @ time of, cmake ...

but openssl installed here

whereis openssl openssl: /usr/bin/openssl /usr/bin/x11/openssl /usr/share/man/man1/openssl.1ssl.gz

=================================== error ================

-- looking 4 include files stdlib.h, ..., float.h - found -- found zlib: /usr/lib/arm-linux-gnueabihf/libz.so (found version "1.2.7")  zlib include dirs: /usr/include zlib libraries: /usr/lib/arm-linux-gnueabihf/libz.so compiling ssl support cmake error @ /usr/local/share/cmake-2.8/modules/findpackagehandlestandardargs.cmake:97 (message):   not find openssl, try set path openssl root folder in   system variable openssl_root_dir (missing: openssl_libraries   openssl_include_dir) call stack (most recent call first):   /usr/local/share/cmake-2.8/modules/findpackagehandlestandardargs.cmake:291 (_fphsa_failure_message)   /usr/local/share/cmake-2.8/modules/findopenssl.cmake:313 (find_package_handle_standard_args)   cmakelists.txt:436 (find_package)   -- configuring incomplete, errors occurred!

======================================= openssl here ========================

ignite@ignite:~/sbox2/rootfs/rfs-raspbian_2/home/pi/libwebsockets/build$  whereis openssl openssl: /usr/bin/openssl /usr/bin/x11/openssl /usr/share/man/man1/openssl.1ssl.gz

actually have, source tarball here. have configure script make & make install http://www.openssl.org/source/
openssl-1.0.1e.tar.gz

so (openssl-1.0.1e.tar.gz) right package --> openssl-dev or openssl-devel --- can resolve error ?

so (openssl-1.0.1e.tar.gz) right package --> openssl-dev or openssl-devel --- can resolve error ?

the openssl-dev packages development on host machine (which x86 or x64 family). need cross compiled library target (and not host). openssl-dev not solve problem.

are targeting generic arm processor, ios, or android? if former, need arm cross-toolchain paths set appropriately. i'm not aware of tutorial on cross compiling library (and i've suffered in past).

there prebuilt configurations generic cross compiling. open configure , config, , @ of triples. (openssl not use automake , friends).

if ios or android, openssl wiki has examples of cross compiling platforms. see, example, fips library , android. setenv-android.sh script important because set paths, sysroot , toolchains. once paths , toolschains set, rest easy.

if targeting generic arm, use android setenv-android.sh starting point generic build. once complete build, point openssl_root_dir install directory arm.


Popular posts from this blog

How to calculate SNR of signals in MATLAB? -

-
i've encountered simple, yet fundamental problem on calculating snr: there several signals : s1 = original , pure clean signal without noise. n1 = white gaussian noise going added s1. s2 = s1 + n1 (the noisy signal before performing noise-reduction algorithm) s3 = noise-reduced signal (after performing noise reduction algorithm) n2 = s3 - s1 (the amount of noise after performing noise-reduction algorithm) now want compare snr before , after performing noise-reduction algorithm. which signals should consider snr_before!? s1/n1 or s2/n1 ? which signals should consider snr_after!? s3/n1 or s3/n2 ? which commands or functions should use in matlab in order compute snr_before , snr_after? thanks billion putting time on helping me. what know calculating snr before : snrbeforenoise = mean( signal .^ 2 ) / mean( noise .^ 2 ); and snr after : residual_noise = signal - noise_reduced_signal; snr_after = mean( signal .^ 2 ) / mean( residual_noise .^ 2
Read more

c# - Attempting to upload to FTP: System.Net.WebException: System error -

-
i have api takes in xml , uploads files based on information in xml. uploads on schedule (also xml), , have tested surrounding , know works. i getting error 40% of time on first file attempt upload in each time cycle (time cycle = 45 minutes files, 30 minutes others). here code upload: try { loggerftp.log("uploading file: " + filename, false); // create request. ftpwebrequest request = (ftpwebrequest)webrequest.create(appsettingsftp.ftpurl + @"/" + filename); request.method = webrequestmethods.ftp.uploadfile; request.timeout = 6000000; //set 100 minutes //request.timeout = -1; //set infinite // add login credentials. request.credentials = new networkcredential(appsettingsftp.ftplogin, appsettingsftp.ftppassword); // grab file contents. streamreader sourcestream = new streamreader(appsettingsftp.uploadfiledirectory + filename); byte[] filecontents = encoding.utf8.getbytes(sourcestream.readtoend()); sourcest
Read more

ios - UISlider customization: how to properly add shadow to custom knob image -

-
Image
i need place custom knob image shadow uislider. far have image of 38x38, of there region defines shadow of knob. now while using image, when slide knob extreme ends actual knob not able cover end points, hence end points visible under transparent region of knob image this code using customize uislider uiimage *slidebtimg = [uiimage imagenamed:sliderknobimg]; [self.ratingslider setthumbimage:slidebtimg forstate:uicontrolstatenormal]; [self.ratingslider setthumbimage:slidebtimg forstate:uicontrolstatehighlighted]; how can implement custom knob shadow beneath it, covering end points?? look inside uislider.h , there methods let customize slider knob , track needed. (ios 2.0 , above) // lets subclass lay out track , thumb needed - (cgrect)minimumvalueimagerectforbounds:(cgrect)bounds; - (cgrect)maximumvalueimagerectforbounds:(cgrect)bounds; - (cgrect)trackrectforbounds:(cgrect)bounds; - (cgrect)thumbrectforbounds:(cgrect)bounds trackrect:(cgrect)rect value:
Read more