<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div><blockquote type="cite" class=""><div id="divtagdefaultwrapper" style="font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; font-size: 12pt; background-color: rgb(255, 255, 255); font-family: Calibri, Arial, Helvetica, sans-serif;" class=""><div style="margin-top: 0px; margin-bottom: 0px;" class="">Should it still be the compilation setting issue, when compiling my library or compiling FFmpeg?</div></div></blockquote><div><br class=""></div><div>When you do the final link, are you using the C or C++ compiler? You need to use the C++ one.</div><div><br class=""></div><div>So:</div><div>1. C++ etc to make the library</div><div>2. cc -c your_files.c</div><div>3. C++ -llibrary your_files.o</div></div><br class=""><div class="">In these errors:</div><div class=""><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);" class=""></div></div><blockquote type="cite" class=""><div class=""><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);" class=""><span class="s1">.../binutils/2.25/centos6-native/da39a3e/bin/ld: .../mylibrary/0.1/gcc-4.9-glibc-2.20/80414d5/lib/libmylibrary.a(mylibrary_file.cpp.o): undefined reference to symbol '_ZdlPv@@GLIBCXX_3.4'</span></div><div style="margin-top: 0px; margin-bottom: 0px; font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);" class=""><span class="s1">.../libgcc/4.9.x/gcc-4.9-glibc-2.20/024dbc3/lib/libstdc++.so: error adding symbols: DSO missing from command line</span></div></div></blockquote><div class=""><br class=""></div><div class="">“glibcxx” suggests it’s missing the C++ support library, like if you’re linking with cc instead of c++ compiler.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">And sorry about dropping the tar on the list earlier, I thought I was replying off list. My bad.</div><div class=""><br class=""></div><div class="">Perette</div><div class=""><br class=""></div></body></html>