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4ff3f20540
According to MSVC manual (*1), cl.exe can skip including a header file when that: - contains #pragma once, or - starts with #ifndef, or - starts with #if ! defined. GCC has a similar trick (*2), but it acts more stricter (e. g. there must be _no tokens_ outside of #ifndef...#endif). Sun C lacked #pragma once for a looong time. Oracle Developer Studio 12.5 finally implemented it, but we cannot assume such recent version. This changeset modifies header files so that each of them include strictly one #ifndef...#endif. I believe this is the most portable way to trigger compiler optimizations. [Bug #16770] *1: https://docs.microsoft.com/en-us/cpp/preprocessor/once *2: https://gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html |
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| .. | ||
| acosh.c | ||
| alloca.c | ||
| cbrt.c | ||
| close.c | ||
| crt_externs.h | ||
| crypt.c | ||
| crypt.h | ||
| des_tables.c | ||
| dtoa.c | ||
| dup2.c | ||
| erf.c | ||
| explicit_bzero.c | ||
| ffs.c | ||
| file.h | ||
| fileblocks.c | ||
| finite.c | ||
| flock.c | ||
| hypot.c | ||
| isinf.c | ||
| isnan.c | ||
| langinfo.c | ||
| lgamma_r.c | ||
| memcmp.c | ||
| memmove.c | ||
| mt19937.c | ||
| nan.c | ||
| nextafter.c | ||
| procstat_vm.c | ||
| setproctitle.c | ||
| signbit.c | ||
| strchr.c | ||
| strerror.c | ||
| strlcat.c | ||
| strlcpy.c | ||
| strstr.c | ||
| tgamma.c | ||
| x86_64-chkstk.S | ||