For those who had the same reaction as me ("The hell is Pelles C 7.00"):
Pelles C is a complete development kit for Windows (and Windows Mobile, but this platform is fading away). It contains among other things an optimizing C compiler, a macro assembler, a linker, a resource compiler, a message compiler, a code signing utility, a make utility and an install builder.
It also contains an integrated development environment (IDE) with project management, debugger, profiler, source code editor, and resource editors for dialogs, menus, string tables, accelerator tables, bitmaps, icons, cursors, animated cursors, animation videos (AVI's without sound), versions and XP manifests.
The compiler is originally based on LCC (by Chris Fraser and David Hanson), but since then enhanced with support for C99 and C11, a global optimizer, a new register allocator, a function inliner, intrinsic functions, and many Microsoft C extensions.
The install builder for Windows is originally based on NSIS from Nullsoft.
Support for 32-bit Windows (X86), 64-bit Windows (X64), and (deprecated) Windows Mobile (ARM).
Support for the C99 and C11 standard.
Support for most SSE, SSE2, SSE3, SSSE3, SSE4.1, SSE4.2, AES, and AVX(1) intrinsics (X64 only).
Integrated source code editor with call tips and symbol browsing.
Integrated source-level debugger.
Integrated sampling profiler.
Inline assembler for X86 and ARM.
Integrated resource editor.
Integrated bitmap, icon and cursor editor.
Integrated animated cursor and video editor.
Integrated hex-dump editor.
Support for custom controls in the dialog editor.
Support for custom project wizards.