diff options
Diffstat (limited to 'm4/tuklib_physmem.m4')
| -rw-r--r-- | m4/tuklib_physmem.m4 | 50 |
1 files changed, 27 insertions, 23 deletions
diff --git a/m4/tuklib_physmem.m4 b/m4/tuklib_physmem.m4 index 91e3dc56..59a645a4 100644 --- a/m4/tuklib_physmem.m4 +++ b/m4/tuklib_physmem.m4 @@ -35,7 +35,8 @@ AC_REQUIRE([TUKLIB_COMMON]) # sys/param.h might be needed by sys/sysctl.h. AC_CHECK_HEADERS([sys/param.h]) -AC_MSG_CHECKING([how to detect the amount of physical memory]) +AC_CACHE_CHECK([how to detect the amount of physical memory], + [tuklib_cv_physmem_method], [ # Maybe checking $host_os would be enough but this matches what # tuklib_physmem.c does. @@ -46,9 +47,7 @@ int main(void) { return 0; } #else #error #endif -]])], [ - AC_MSG_RESULT([special]) -], [ +]])], [tuklib_cv_physmem_method=special], [ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ #include <unistd.h> @@ -60,12 +59,7 @@ main(void) i = sysconf(_SC_PHYS_PAGES); return 0; } -]])], [ - AC_DEFINE([TUKLIB_PHYSMEM_SYSCONF], [1], - [Define to 1 if the amount of physical memory can be detected - with sysconf(_SC_PAGESIZE) and sysconf(_SC_PHYS_PAGES).]) - AC_MSG_RESULT([sysconf]) -], [ +]])], [tuklib_cv_physmem_method=sysconf], [ AC_COMPILE_IFELSE([AC_LANG_SOURCE([[ #include <sys/types.h> @@ -82,12 +76,7 @@ main(void) sysctl(name, 2, &mem, &mem_ptr_size, NULL, 0); return 0; } -]])], [ - AC_DEFINE([TUKLIB_PHYSMEM_SYSCTL], [1], - [Define to 1 if the amount of physical memory can be detected - with sysctl().]) - AC_MSG_RESULT([sysctl]) -], [ +]])], [tuklib_cv_physmem_method=sysctl], [ # This version of sysinfo() is Linux-specific. Some non-Linux systems have # different sysinfo() so we must check $host_os. @@ -103,17 +92,32 @@ main(void) return 0; } ]])], [ - AC_DEFINE([TUKLIB_PHYSMEM_SYSINFO], [1], - [Define to 1 if the amount of physical memory - can be detected with Linux sysinfo().]) - AC_MSG_RESULT([sysinfo]) + tuklib_cv_physmem_method=sysinfo ], [ - AC_MSG_RESULT([unknown]) + tuklib_cv_physmem_method=unknown ]) ;; *) - AC_MSG_RESULT([unknown]) + tuklib_cv_physmem_method=unknown + ;; +esac +])])])]) +case $tuklib_cv_physmem_method in + sysconf) + AC_DEFINE([TUKLIB_PHYSMEM_SYSCONF], [1], + [Define to 1 if the amount of physical memory can + be detected with sysconf(_SC_PAGESIZE) and + sysconf(_SC_PHYS_PAGES).]) + ;; + sysctl) + AC_DEFINE([TUKLIB_PHYSMEM_SYSCTL], [1], + [Define to 1 if the amount of physical memory can + be detected with sysctl().]) + ;; + sysinfo) + AC_DEFINE([TUKLIB_PHYSMEM_SYSINFO], [1], + [Define to 1 if the amount of physical memory + can be detected with Linux sysinfo().]) ;; esac -])])]) ])dnl |