Softfloat public headers require C99 standard headers, leading to Hercules build failures on older VS versions.

[srorso]

Public header softfloat.h requires stdint.h and stdbool.h, which are C99 headers not available with older versions of Visual Studio.

SoftFloat 3a For Hercules (S3FH) builds correctly because the CMake process for S3FH substitutes its own versions of the required C99 headers when they are not available on the host system. But those substitute versions are not available to the Hercules build, which includes the softfloat.h public header, so the build fails.

[srorso]

See also Hercules 4.0 Issue #172.

[srorso]

Issue addressed in commit d7d1229. That commit refactored header #includes and added type definitions if needed on pre-C99 systems without conflicting with those in Hercules-390 Hyperion.