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We are pleased to announce the release of libfirm-1.22.0. After three years of development this is the first release with a complete preprocessor and come with many improvements:

• Bump version number to match libfirm
• Color diagnostics
• Full preprocessor support
• Support C99 complex numbers
• Improved commandline option handling emulating even more gcc options
• Create libcparser to facilitate the creation of external tools
• Bugfixes
• Improved diagnostics
• Support -Wa, -Xlinker, -Xpreprocessor, -Xassembler
• Support -Wsystem
• Partial support for C11 features
• Support -pedantic and -pedantic-errors
• Support __attribute__((alias()))
• Support -Wnot-compound-assign
• Support -Wcompat-option
• Support -Wunknown-warning-option
• Select the base type for enums like gcc
• Support -no-integrated-cpp
• Support -Wcomment (warn about /* within /**/ comments)
• Use integrated preprocessor by default
• Improve auto-detection of host machine triple
• Support -Wunused-option
• Support -Wenum-conversion
• Improve -Wsign-compare
• Support -Wdistinct-pointer-types
• Make semantic checks more strict
• Add mechanism to optimize well-known libc functions
• Support -dumpmachine
• Support -Wpointer-sign
• Stub support for -fasynchronous-unwind-tables, -funwind-tables, -frounding-math
• Support -fexcess-precision
• Support -nostdlib
• Support Makefile dependency generation (-M, -MD, ...)
• Support -fno-verbose-asm (-fverbose-asm is default)
• Improve diagnostics for disabled language extensions
• Support setting the mantissa with __builtin_nan
• Recognize, but reject, MSC asm statements, i.e. __asm { ... }
• Support attribute for custom printf-like format checks, e.g. int my_printf(char const* fmt, ...) __attribute__((custom_format(1, "#0", "%": void, "d": int, "ld": long, "s": char const*));
• Show an explanation for each warning switch when printing the help
• Improve PIC commandline options
• Support -f[no-]builtin