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Over time, qpdf's grade has dropped on lgtm, but they are not transparent about how grades are assigned. Fixing current alerts, in my opinion, reduces clarity and maintainability of the code in the name of performance in non-critical sections of code. Some analysis by m-holger suggests that fixing some of the current alerts actually degrades performance (slightly) while fixing others results in insignificant improvements. The quality of qpdf can be measured in other ways, such as its extensive test suite, documentation, and long track record of reliably manipulating PDFs with high performance, few bugs, and few external dependencies. The lgtm rating is a distraction at best.
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Some people don't know what CI is, so remove use of that abbreviation when it doesn't add any value.
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Also switch URLs for the qpdf and qtest websites to sourceforge.io (https) instead of sourceforge.net (http).
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External libraries for Windows are now built automatically in the qpdf/external-libs repository and include openssl in addition to zlib and jpeg. Use these, and update the Windows build to build with the openssl crypto provider by default. We leave the native crypto provider enabled in case there is a problem with openssl and also to continue to exercise that code.
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It is redundant with qpdf's main CI environment, which is Azure Pipelines, but may soon be migrated to GitHub Actions.
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Fixes qpdf/qpdf#417
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Includes updates to m4/ax_cxx_compile_stdcxx.m4 to make it work with msvc, which supports C++-11 with no flags but doesn't set __cplusplus to a recent value.
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I don't want to maintain them or make anyone think they should be used.
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Since the files autogen.sh creates are now controlled, you only have to run autogen.sh when you modify the source files, not when you build from a clean checkout.
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Use free Azure Pipelines to do Linux, Windows, and Mac build and test and to generate Windows binary distributions.
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This change was obviously not supposed to merge.
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Enhance 'build-appimage' script: - add initial comment block and comments for all major steps in the script for the benefit of casual users of the script - 'configure' to build HTML + PDF documentation - do not remove the man pages from the AppDir (will be used by custom AppRun script) - use a bigger icon - use '-g' for appimagetool so it can figure out the 'updateinfo' string on Travis CI - output big fat warning to users who build AppImage in non-"Trusty" environments Add 'AppStream' metadata file This serves to satisfy desktop environments who want to automatically create menu entries, show screenshots and display software descriptions. Note, this file (qpdf.appdata.xml) may need more tweaking since the Freedesktop folks aren't exactly sure themselves how their 'standard' should exactly look like, and they changed their validation tools quite a bit over the recent years in incompatible ways... Extended and enhanced customized AppRun script - Add a '--ai-usage' invokation param to the AppImage which serves as a starting point to explore the other embedded options - Support displaying of manual pages by running AppImage with added parameter '--man ...' - Also include HTML/PDF documentation, READMEs and licenses into AppImage - Support for more parameters: '--list-man', '--list-pdf', '--list-readme', '--list-license', '--list-html', '--list-exe', '--pdf', '--readme', '--license', '--html' and '--show-apprun' - Support 'fix-pdf' and 'zlib-' as sub-commands (not just as symlinks)
