Build on modern macOS
Three source patches the modern clang/C++ frontend requires: - graphics/window.cpp: strchr on const char* now returns const char* - filemap.cpp, prefs.cpp: C++11 forbids no-space concatenation of a string literal with an adjacent macro identifier Autotools state regenerated with autoreconf -fi against current autoconf/automake so configure can be run on macOS 26 / Apple Silicon. Added run-kobodl.sh to launch the binary from the source tree (the compiled-in data paths assume a .app bundle), and a .gitignore for build artifacts. Out-of-tree dependency: SDL_image 1.2 must be built with --disable-imageio. Apple's ImageIO backend in IMG_ImageIO.m yields SDL_Surfaces with all-zero pixel data on current macOS, leaving every sprite invisible; libpng decodes correctly. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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