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https://git.tartarus.org/simon/putty.git
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3996919f5e
A couple of actual checks were missing (elf_aux_info, sysctlbyname). Several more were accidentally left out of cmake.h.in, meaning they wouldn't be propagated from cmake's variable space into the actual compilation. And a handful of checks in the C source were still using the autotools-style 'if defined' in place of the cmake-style "it's always 0 or 1" plain #if.
66 lines
1.6 KiB
C
66 lines
1.6 KiB
C
/*
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* uxutils.h: header included only by uxutils.c.
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*
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* The only reason this is a header file instead of a source file is
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* so that I can define 'static inline' functions which may or may not
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* be used, without provoking a compiler warning when I turn out not
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* to use them in the subsequent source file.
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*/
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#ifndef PUTTY_UXUTILS_H
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#define PUTTY_UXUTILS_H
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#if defined __APPLE__
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#if HAVE_SYS_SYSCTL_H
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#include <sys/sysctl.h>
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#endif
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#endif /* defined __APPLE__ */
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#if defined __arm__ || defined __aarch64__
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#if HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#if HAVE_SYS_AUXV_H
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#include <sys/auxv.h>
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#endif
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#if HAVE_ASM_HWCAP_H
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#include <asm/hwcap.h>
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#endif
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#if HAVE_GETAUXVAL
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/* No code needed: getauxval has just the API we want already */
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#elif HAVE_ELF_AUX_INFO
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/* Implement the simple getauxval API in terms of FreeBSD elf_aux_info */
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static inline u_long getauxval(int which)
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{
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u_long toret;
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if (elf_aux_info(which, &toret, sizeof(toret)) != 0)
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return 0; /* elf_aux_info didn't work */
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return toret;
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}
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#else
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/* Implement a stub getauxval which returns no capabilities */
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static inline u_long getauxval(int which) { return 0; }
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#endif
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#endif /* defined __arm__ || defined __aarch64__ */
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#if defined __APPLE__
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static inline bool test_sysctl_flag(const char *flagname)
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{
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#if HAVE_SYSCTLBYNAME
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int value;
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size_t size = sizeof(value);
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return (sysctlbyname(flagname, &value, &size, NULL, 0) == 0 &&
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size == sizeof(value) && value != 0);
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#else /* HAVE_SYSCTLBYNAME */
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return false;
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#endif /* HAVE_SYSCTLBYNAME */
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}
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#endif /* defined __APPLE__ */
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#endif /* PUTTY_UXUTILS_H */
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