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PORTING.md

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General problems

  1. Makefile.am:8: error: 'pkgconfig_DATA' is used but 'pkgconfigdir' is undefined => please install pkgconfig.

Windows

Cross-compiling Windows binaries is supported:

# For x86_64 (64bit)
$ ./configure CC=x86_64-w64-mingw32-gcc --host x86_64-w64-mingw32 --enable-static-exe
$ make

# For i686 (32bit)
$ ./configure CC=i866-w64-mingw32-gcc --host i686-w64-mingw32 --enable-static-exe
$ make

Static builds are recommended to avoid the pthread dynamic linking issue. If a dynamic library is desired, consider defining BZIP3_DLL_EXPORT or BZIP3_DLL_IMPORT.

M1 MacOS

Make sure that you run ./configure with --disable-arch-native.

Emscripten

Assuming that asm.js code is desired:

emconfigure ./configure --without-pthread --host none-none-none CC=emcc "CFLAGS=-O2 -DBZIP3_VISIBLE=\"__attribute__((used))\""
make src/bzip3-libbz3.o
emcc -O2 src/bzip3-libbz3.o -o libbz3.js -sWASM=0 --memory-init-file 0 -sFILESYSTEM=0 -sALLOW_MEMORY_GROWTH -s 'EXPORTED_RUNTIME_METHODS=["UTF8ToString"]'

asm.js code size: 118KB (v1.1.7), 34K gzipped. wasm+js stub code size: 76KB (v1.1.7), 26K gzipped.