1 | dnl openbsd in it's neverending brokenness requires stdint.h for intptr_t, |
1 | dnl openbsd in its neverending brokenness requires stdint.h for intptr_t, |
2 | dnl but that header isn't very portable... |
2 | dnl but that header isn't very portable... |
3 | AC_CHECK_HEADERS([stdint.h sys/syscall.h sys/prctl.h]) |
3 | AC_CHECK_HEADERS([stdint.h sys/syscall.h sys/prctl.h]) |
4 | |
4 | |
5 | AC_SEARCH_LIBS( |
5 | AC_SEARCH_LIBS( |
6 | pthread_create, |
6 | pthread_create, |
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140 | int res = prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0); |
140 | int res = prctl (PR_SET_NAME, (unsigned long)name, 0, 0, 0); |
141 | } |
141 | } |
142 | ])],ac_cv_prctl_set_name=yes,ac_cv_prctl_set_name=no)]) |
142 | ])],ac_cv_prctl_set_name=yes,ac_cv_prctl_set_name=no)]) |
143 | test $ac_cv_prctl_set_name = yes && AC_DEFINE(HAVE_PRCTL_SET_NAME, 1, prctl(PR_SET_NAME) is available) |
143 | test $ac_cv_prctl_set_name = yes && AC_DEFINE(HAVE_PRCTL_SET_NAME, 1, prctl(PR_SET_NAME) is available) |
144 | |
144 | |
145 | dnl ############################################################################# |
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146 | dnl # these checks exist for the benefit of IO::AIO |
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147 | |
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148 | AC_CACHE_CHECK(for set/getrlimit, ac_cv_rlimits, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
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149 | #include <sys/time.h> |
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150 | #include <sys/resource.h> |
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151 | int res; |
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152 | int main (void) |
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153 | { |
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154 | struct rlimit srl; |
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155 | srl.rlim_cur = srl.rlim_max = RLIM_INFINITY; |
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156 | res = getrlimit (RLIMIT_NOFILE, &srl); |
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157 | res = setrlimit (RLIMIT_NOFILE, &srl); |
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158 | return 0; |
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159 | } |
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160 | ]])],ac_cv_rlimits=yes,ac_cv_rlimits=no)]) |
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161 | test $ac_cv_rlimits = yes && AC_DEFINE(HAVE_RLIMITS, 1, setrlimit/getrlimit is available) |
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162 | |
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163 | dnl at least uclibc defines _POSIX_ADVISORY_INFO without *any* of the required |
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164 | dnl functionality actually being present. ugh. |
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165 | AC_CACHE_CHECK(for posix_madvise, ac_cv_posix_madvise, [AC_LINK_IFELSE([AC_LANG_SOURCE([ |
145 | AC_CACHE_CHECK(for posix_close, ac_cv_posix_close, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
166 | #include <sys/mman.h> |
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167 | int main (void) |
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168 | { |
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169 | int res = posix_madvise ((void *)0, (size_t)0, POSIX_MADV_NORMAL); |
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170 | int a = POSIX_MADV_SEQUENTIAL; |
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171 | int b = POSIX_MADV_RANDOM; |
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172 | int c = POSIX_MADV_WILLNEED; |
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173 | int d = POSIX_MADV_DONTNEED; |
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174 | return 0; |
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175 | } |
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176 | ])],ac_cv_posix_madvise=yes,ac_cv_posix_madvise=no)]) |
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177 | test $ac_cv_posix_madvise = yes && AC_DEFINE(HAVE_POSIX_MADVISE, 1, posix_madvise(2) is available) |
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178 | |
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179 | AC_CACHE_CHECK(for posix_fadvise, ac_cv_posix_fadvise, [AC_LINK_IFELSE([AC_LANG_SOURCE([ |
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180 | #define _XOPEN_SOURCE 600 |
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181 | #include <fcntl.h> |
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182 | int main (void) |
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183 | { |
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184 | int res = posix_fadvise ((int)0, (off_t)0, (off_t)0, POSIX_FADV_NORMAL); |
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185 | int a = POSIX_FADV_SEQUENTIAL; |
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186 | int b = POSIX_FADV_NOREUSE; |
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187 | int c = POSIX_FADV_RANDOM; |
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188 | int d = POSIX_FADV_WILLNEED; |
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189 | int e = POSIX_FADV_DONTNEED; |
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190 | return 0; |
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191 | } |
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192 | ])],ac_cv_posix_fadvise=yes,ac_cv_posix_fadvise=no)]) |
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193 | test $ac_cv_posix_fadvise = yes && AC_DEFINE(HAVE_POSIX_FADVISE, 1, posix_fadvise(2) is available) |
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194 | |
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195 | dnl lots of linux specifics |
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196 | AC_CHECK_HEADERS([linux/fs.h linux/fiemap.h]) |
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197 | |
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198 | AC_CACHE_CHECK([for splice, vmsplice and tee], ac_cv_linux_splice, [AC_LINK_IFELSE([AC_LANG_SOURCE([ |
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199 | #include <fcntl.h> |
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200 | int main (void) |
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201 | { |
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202 | ssize_t res; |
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203 | res = splice ((int)0, (loff_t)0, (int)0, (loff_t *)0, (size_t)0, SPLICE_F_MOVE | SPLICE_F_NONBLOCK | SPLICE_F_MORE); |
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204 | res = tee ((int)0, (int)0, (size_t)0, SPLICE_F_NONBLOCK); |
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205 | res = vmsplice ((int)0, (struct iovec *)0, 0, SPLICE_F_NONBLOCK | SPLICE_F_GIFT); |
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206 | return 0; |
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207 | } |
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208 | ])],ac_cv_linux_splice=yes,ac_cv_linux_splice=no)]) |
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209 | test $ac_cv_linux_splice = yes && AC_DEFINE(HAVE_LINUX_SPLICE, 1, splice/vmsplice/tee(2) are available) |
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210 | |
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211 | AC_CACHE_CHECK(for pipe2, ac_cv_pipe2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
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212 | #include <fcntl.h> |
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213 | #include <unistd.h> |
146 | #include <unistd.h> |
214 | int res; |
147 | int res; |
215 | int main (void) |
148 | int main (void) |
216 | { |
149 | { |
217 | res = pipe2 (0, 0); |
150 | res = posix_close (0, 0); /* we do not need any flags */ |
218 | return 0; |
151 | return 0; |
219 | } |
152 | } |
220 | ]])],ac_cv_pipe2=yes,ac_cv_pipe2=no)]) |
153 | ]])],ac_cv_posix_close=yes,ac_cv_posix_close=no)]) |
221 | test $ac_cv_pipe2 = yes && AC_DEFINE(HAVE_PIPE2, 1, pipe2(2) is available) |
154 | test $ac_cv_posix_close = yes && AC_DEFINE(HAVE_POSIX_CLOSE, 1, posix_close(2) is available) |
222 | |
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223 | AC_CACHE_CHECK(for eventfd, ac_cv_eventfd, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
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224 | #include <sys/eventfd.h> |
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225 | int res; |
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226 | int main (void) |
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227 | { |
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228 | res = eventfd (1, EFD_CLOEXEC | EFD_NONBLOCK); |
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229 | return 0; |
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230 | } |
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231 | ]])],ac_cv_eventfd=yes,ac_cv_eventfd=no)]) |
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232 | test $ac_cv_eventfd = yes && AC_DEFINE(HAVE_EVENTFD, 1, eventfd(2) is available) |
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233 | |
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234 | AC_CACHE_CHECK(for timerfd, ac_cv_timerfd, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
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235 | #include <sys/timerfd.h> |
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236 | int res; |
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237 | int main (void) |
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238 | { |
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239 | struct itimerspec its; |
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240 | res = timerfd_create (CLOCK_REALTIME, TFD_CLOEXEC | TFD_NONBLOCK); |
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241 | res = timerfd_settime (res, TFD_TIMER_ABSTIME /*| TFD_TIMER_CANCEL_ON_SET*/, &its, 0); |
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242 | res = timerfd_gettime (res, &its); |
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243 | return 0; |
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244 | } |
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245 | ]])],ac_cv_timerfd=yes,ac_cv_timerfd=no)]) |
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246 | test $ac_cv_timerfd = yes && AC_DEFINE(HAVE_TIMERFD, 1, timerfd_*(2) are available) |
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247 | |
155 | |
248 | AC_CACHE_CHECK(for renameat2, ac_cv_renameat2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
156 | AC_CACHE_CHECK(for renameat2, ac_cv_renameat2, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
249 | #include <unistd.h> |
157 | #include <unistd.h> |
250 | #include <sys/syscall.h> |
158 | #include <sys/syscall.h> |
251 | #include <linux/fs.h> |
159 | #include <linux/fs.h> |
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256 | return 0; |
164 | return 0; |
257 | } |
165 | } |
258 | ]])],ac_cv_renameat2=yes,ac_cv_renameat2=no)]) |
166 | ]])],ac_cv_renameat2=yes,ac_cv_renameat2=no)]) |
259 | test $ac_cv_renameat2 = yes && AC_DEFINE(HAVE_RENAMEAT2, 1, renameat2(2) is available) |
167 | test $ac_cv_renameat2 = yes && AC_DEFINE(HAVE_RENAMEAT2, 1, renameat2(2) is available) |
260 | |
168 | |
261 | AC_CACHE_CHECK(for copy_file_range, ac_cv_copy_file_range, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
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262 | #include <unistd.h> |
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263 | #include <sys/syscall.h> |
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264 | /*#include <linux/copy.h>*/ |
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265 | int res; |
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266 | int main (void) |
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267 | { |
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268 | /*res = syscall (SYS_copy_file_range, 0, 0, 0, 0, 0, COPY_FR_REFLINK | COPY_FR_DEDUP | COPY_FR_COPY);*/ |
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269 | res = syscall (SYS_copy_file_range, 0, 0, 0, 0, 0, 0); |
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270 | return 0; |
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271 | } |
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272 | ]])],ac_cv_copy_file_range=yes,ac_cv_copy_file_range=no)]) |
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273 | test $ac_cv_copy_file_range = yes && AC_DEFINE(HAVE_COPY_FILE_RANGE, 1, copy_file_range(2) is available) |
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274 | |
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275 | AC_CACHE_CHECK(for posix_close, ac_cv_posix_close, [AC_LINK_IFELSE([AC_LANG_SOURCE([[ |
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276 | #include <unistd.h> |
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277 | int res; |
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278 | int main (void) |
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279 | { |
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280 | res = posix_close (0, 0); /* we do not need any flags */ |
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281 | return 0; |
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282 | } |
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283 | ]])],ac_cv_posix_close=yes,ac_cv_posix_close=no)]) |
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284 | test $ac_cv_posix_close = yes && AC_DEFINE(HAVE_POSIX_CLOSE, 1, posix_close(2) is available) |
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285 | |
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