Portable build framework for OpenNTPD
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  1. #
  2. # Copyright (c) 2014-2015 Brent Cook
  3. # Parts based on configure.ac from Portable OpenNTPD:
  4. # Copyright (c) 2004-2008 Darren Tucker
  5. # which itself was based on configure.ac from OpenSSH:
  6. # Copyright (c) 1999-2004 Damien Miller
  7. #
  8. # Permission to use, copy, modify, and distribute this software for any
  9. # purpose with or without fee is hereby granted, provided that the above
  10. # copyright notice and this permission notice appear in all copies.
  11. #
  12. # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  13. # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  14. # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  15. # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  16. # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17. # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18. # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19. AC_INIT([OpenNTPD], m4_esyscmd([tr -d '\n' < VERSION]))
  20. AC_CANONICAL_HOST
  21. AM_INIT_AUTOMAKE([subdir-objects])
  22. AC_CONFIG_MACRO_DIR([m4])
  23. m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
  24. AC_SUBST([USER_CFLAGS], "$CFLAGS")
  25. CFLAGS="-O2 -Wall -std=gnu99 -g"
  26. case $host_os in
  27. *darwin*)
  28. HOST_OS=darwin
  29. AC_DEFINE(SETEUID_BREAKS_SETUID,[],[setuid after seteuid does not work])
  30. AC_DEFINE(BROKEN_SETREUID,[], [Broken setreuid])
  31. AC_DEFINE(BROKEN_SETREGID,[], [Broken setregid])
  32. AC_DEFINE(YYSTYPE_IS_DECLARED,[], [Broken bison])
  33. AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV])
  34. ;;
  35. *freebsd*)
  36. HOST_OS=freebsd
  37. AC_SUBST([PROG_LDADD], ['-lthr'])
  38. ;;
  39. *linux*)
  40. HOST_OS=linux
  41. CFLAGS="$CFLAGS -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_GNU_SOURCE"
  42. AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV])
  43. ;;
  44. *netbsd*)
  45. HOST_OS=netbsd
  46. ;;
  47. *openbsd*)
  48. AC_DEFINE([HAVE_ATTRIBUTE__BOUNDED__], [1], [OpenBSD has __bounded__])
  49. AC_DEFINE([HAVE_ATTRIBUTE__DEAD], [1], [OpenBSD has __dead])
  50. ;;
  51. *solaris*)
  52. HOST_OS=solaris
  53. CFLAGS="$CFLAGS -D__EXTENSIONS__ -D_XOPEN_SOURCE=600 -DBSD_COMP"
  54. AC_SUBST([PLATFORM_LDADD], ['-lnsl -lsocket'])
  55. ;;
  56. *) ;;
  57. esac
  58. AM_CONDITIONAL([HOST_DARWIN], [test x$HOST_OS = xdarwin])
  59. AM_CONDITIONAL([HOST_FREEBSD], [test x$HOST_OS = xfreebsd])
  60. AM_CONDITIONAL([HOST_LINUX], [test x$HOST_OS = xlinux])
  61. AM_CONDITIONAL([HOST_NETBSD], [test x$HOST_OS = xnetbsd])
  62. AM_CONDITIONAL([HOST_SOLARIS], [test x$HOST_OS = xsolaris])
  63. AC_CHECK_FUNC([dl_iterate_phdr],,
  64. [AC_SEARCH_LIBS([dl_iterate_phdr],[dl])])
  65. AC_PROG_CC
  66. AC_PROG_CC_STDC
  67. AM_PROG_CC_C_O
  68. AC_PROG_LIBTOOL
  69. AC_PROG_YACC
  70. save_cflags="$CFLAGS"
  71. CFLAGS=-Wno-pointer-sign
  72. AC_MSG_CHECKING([whether CC supports -Wno-pointer-sign])
  73. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
  74. [AC_MSG_RESULT([yes])]
  75. [AM_CFLAGS=-Wno-pointer-sign],
  76. [AC_MSG_RESULT([no])]
  77. )
  78. CFLAGS="$save_cflags $AM_CFLAGS"
  79. AC_MSG_CHECKING([if compiling with clang])
  80. AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[
  81. #ifndef __clang__
  82. not clang
  83. #endif
  84. ]])],
  85. [AC_MSG_RESULT([yes])]
  86. [CLANG_FLAGS=-Qunused-arguments],
  87. [AC_MSG_RESULT([no])]
  88. )
  89. CFLAGS="$CFLAGS $CLANG_CFLAGS"
  90. LDFLAGS="$LDFLAGS $CLANG_FLAGS"
  91. # check functions that are expected to be in libc
  92. AC_CHECK_FUNCS([adjfreq ntp_adjtime adjtimex])
  93. AC_CHECK_FUNCS([arc4random arc4random_uniform asprintf explicit_bzero])
  94. AC_CHECK_FUNCS([closefrom getentropy memmem poll reallocarray])
  95. AC_CHECK_FUNCS([setproctitle setgroups])
  96. AC_CHECK_FUNCS([setregid setresgid setreuid setresuid])
  97. AC_CHECK_FUNCS([strlcat strlcpy strtonum sysconf])
  98. # check auxiliary libraries that might contain other functions
  99. AC_SEARCH_LIBS([arc4random], [crypto])
  100. AC_SEARCH_LIBS([clock_getres],[rt posix4])
  101. AC_SEARCH_LIBS([clock_gettime],[rt posix4])
  102. AC_SEARCH_LIBS([ibuf_open], [util])
  103. AC_SEARCH_LIBS([MD5Init], [md md5])
  104. AC_SEARCH_LIBS([SHA512Init], [md])
  105. AC_CHECK_FUNCS([arc4random ibuf_open MD5Init SHA512Init])
  106. AC_CHECK_FUNCS([clock_gettime clock_getres])
  107. # check for libtls
  108. AC_SEARCH_LIBS([tls_config_set_ca_mem],[tls],
  109. [LIBS="$LIBS -ltls -lssl -lcrypto"],,[-lssl -lcrypto])
  110. AC_CHECK_FUNCS([tls_config_set_ca_mem])
  111. # Share test results with automake
  112. AM_CONDITIONAL([HAVE_ADJFREQ], [test "x$ac_cv_func_adjfreq" = xyes])
  113. AM_CONDITIONAL([HAVE_ARC4RANDOM], [test "x$ac_cv_func_arc4random" = xyes])
  114. AM_CONDITIONAL([HAVE_ARC4RANDOM_UNIFORM], [test "x$ac_cv_func_arc4random_uniform" = xyes])
  115. AM_CONDITIONAL([HAVE_ASPRINTF], [test "x$ac_cv_func_asprintf" = xyes])
  116. AM_CONDITIONAL([HAVE_CLOSEFROM], [test "x$ac_cv_func_closefrom" = xyes])
  117. AM_CONDITIONAL([HAVE_CLOCK_GETRES], [test "x$ac_cv_func_clock_getres" = xyes])
  118. AM_CONDITIONAL([HAVE_CLOCK_GETTIME], [test "x$ac_cv_func_clock_gettime" = xyes])
  119. AM_CONDITIONAL([HAVE_EXPLICIT_BZERO], [test "x$ac_cv_func_explicit_bzero" = xyes])
  120. AM_CONDITIONAL([HAVE_GETENTROPY], [test "x$ac_cv_func_getentropy" = xyes])
  121. AM_CONDITIONAL([HAVE_IMSG], [test "x$ac_cv_func_ibuf_open" = xyes])
  122. AM_CONDITIONAL([HAVE_MD5], [test "x$ac_cv_func_MD5Init" = xyes])
  123. AM_CONDITIONAL([HAVE_MEMMEM], [test "x$ac_cv_func_memmem" = xyes])
  124. AM_CONDITIONAL([HAVE_POLL], [test "x$ac_cv_func_poll" = xyes])
  125. AM_CONDITIONAL([HAVE_REALLOCARRAY], [test "x$ac_cv_func_reallocarray" = xyes])
  126. AM_CONDITIONAL([HAVE_SETGROUPS], [test "x$ac_cv_func_setgroups" = xyes])
  127. AM_CONDITIONAL([HAVE_SETRESGID], [test "x$ac_cv_func_setresgid" = xyes])
  128. AM_CONDITIONAL([HAVE_SETRESUID], [test "x$ac_cv_func_setresuid" = xyes])
  129. AM_CONDITIONAL([HAVE_SETPROCTITLE], [test "x$ac_cv_func_setproctitle" = xyes])
  130. AM_CONDITIONAL([HAVE_SHA512], [test "x$ac_cv_func_SHA512Init" = xyes])
  131. AM_CONDITIONAL([HAVE_STRLCAT], [test "x$ac_cv_func_strlcat" = xyes])
  132. AM_CONDITIONAL([HAVE_STRLCPY], [test "x$ac_cv_func_strlcpy" = xyes])
  133. AM_CONDITIONAL([HAVE_STRTONUM], [test "x$ac_cv_func_strtonum" = xyes])
  134. AM_CONDITIONAL([HAVE_SYSCONF], [test "x$ac_cv_func_sysconf" = xyes])
  135. AM_CONDITIONAL([HAVE_LIBTLS], [test "x$ac_cv_func_tls_config_set_ca_mem" = xyes])
  136. if test "x$ac_cv_func_tls_config_set_ca_mem" = "xyes" ; then
  137. AC_DEFINE([HAVE_LIBTLS], [1])
  138. fi
  139. # overrides for arc4random implementations with known issues
  140. AM_CONDITIONAL([HAVE_ARC4RANDOM],
  141. [test "x$HOST_OS" != xdarwin \
  142. -a "x$HOST_OS" != xfreebsd \
  143. -a "x$HOST_OS" != xnetbsd \
  144. -a "x$ac_cv_func_arc4random" = xyes])
  145. AM_CONDITIONAL([HAVE_ARC4RANDOM_UNIFORM],
  146. [test "x$HOST_OS" != xdarwin \
  147. -a "x$HOST_OS" != xfreebsd \
  148. -a "x$HOST_OS" != xnetbsd \
  149. -a "x$ac_cv_func_arc4random_uniform" = xyes])
  150. AC_CACHE_CHECK([if libc defines __progname], ac_cv_libc_defines___progname, [
  151. AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
  152. [[ extern char *__progname; printf("%s", __progname); ]])],
  153. [ ac_cv_libc_defines___progname="yes" ],
  154. [ ac_cv_libc_defines___progname="no"
  155. ])
  156. ])
  157. if test "x$ac_cv_libc_defines___progname" = "xyes" ; then
  158. AC_DEFINE([HAVE___PROGNAME], [1], [Define if libc defines __progname])
  159. fi
  160. AC_CACHE_CHECK([whether va_copy exists], ac_cv_have_va_copy, [
  161. AC_LINK_IFELSE([AC_LANG_PROGRAM([[
  162. #include <stdarg.h>
  163. va_list x,y;
  164. ]], [[ va_copy(x,y); ]])],
  165. [ ac_cv_have_va_copy="yes" ],
  166. [ ac_cv_have_va_copy="no"
  167. ])
  168. ])
  169. if test "x$ac_cv_have_va_copy" = "xyes" ; then
  170. AC_DEFINE([HAVE_VA_COPY], [1], [Define if va_copy exists])
  171. fi
  172. AC_CACHE_CHECK([whether __va_copy exists], ac_cv_have___va_copy, [
  173. AC_LINK_IFELSE([AC_LANG_PROGRAM([[
  174. #include <stdarg.h>
  175. va_list x,y;
  176. ]], [[ __va_copy(x,y); ]])],
  177. [ ac_cv_have___va_copy="yes" ], [ ac_cv_have___va_copy="no"
  178. ])
  179. ])
  180. if test "x$ac_cv_have___va_copy" = "xyes" ; then
  181. AC_DEFINE([HAVE___VA_COPY], [1], [Define if __va_copy exists])
  182. fi
  183. AC_CHECK_HEADERS([err.h md5.h sha2.h])
  184. AC_CHECK_HEADERS([sys/sensors.h],
  185. AM_CONDITIONAL(HAVE_SENSORS, true),
  186. AM_CONDITIONAL(HAVE_SENSORS, false)
  187. )
  188. AC_CHECK_MEMBERS([struct sockaddr_in.sin_len], , ,
  189. [ #include <netdb.h>
  190. #include <netinet/in.h>
  191. #include <sys/socket.h> ]
  192. )
  193. AC_ARG_WITH([privsep-user],
  194. AS_HELP_STRING([--with-privsep-user=user],
  195. [Privilege separation user for ntpd to use]),
  196. PRIVSEP_USER="$withval",
  197. PRIVSEP_USER="_ntp"
  198. )
  199. AC_DEFINE_UNQUOTED(NTPD_USER, "$PRIVSEP_USER", [Unprivileged user])
  200. AC_SUBST(PRIVSEP_USER)
  201. AC_ARG_WITH([privsep-path],
  202. AS_HELP_STRING([--with-privsep-path=path],
  203. [Privilege separation chroot path to check on install]),
  204. PRIVSEP_PATH="$withval",
  205. PRIVSEP_PATH="/var/empty"
  206. )
  207. AC_SUBST(PRIVSEP_PATH)
  208. AC_ARG_WITH([cacert],
  209. AS_HELP_STRING([--with-cacert=path],
  210. [CA certificate location for HTTPS constraint validation]),
  211. CONSTRAINT_CA="$withval",
  212. CONSTRAINT_CA="/etc/ssl/cert.pem"
  213. )
  214. AC_DEFINE_UNQUOTED(CONSTRAINT_CA, "$CONSTRAINT_CA", [CA certificate path])
  215. AC_CONFIG_FILES([
  216. Makefile
  217. include/Makefile
  218. compat/Makefile
  219. src/Makefile
  220. ])
  221. AC_OUTPUT