libcurl.m4 11 KB

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  1. #***************************************************************************
  2. # _ _ ____ _
  3. # Project ___| | | | _ \| |
  4. # / __| | | | |_) | |
  5. # | (__| |_| | _ <| |___
  6. # \___|\___/|_| \_\_____|
  7. #
  8. # Copyright (C) 2006 - 2022, David Shaw <dshaw@jabberwocky.com>
  9. #
  10. # This software is licensed as described in the file COPYING, which
  11. # you should have received as part of this distribution. The terms
  12. # are also available at https://curl.se/docs/copyright.html.
  13. #
  14. # You may opt to use, copy, modify, merge, publish, distribute and/or sell
  15. # copies of the Software, and permit persons to whom the Software is
  16. # furnished to do so, under the terms of the COPYING file.
  17. #
  18. # This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  19. # KIND, either express or implied.
  20. #
  21. # SPDX-License-Identifier: curl
  22. #
  23. ###########################################################################
  24. # LIBCURL_CHECK_CONFIG ([DEFAULT-ACTION], [MINIMUM-VERSION],
  25. # [ACTION-IF-YES], [ACTION-IF-NO])
  26. # ----------------------------------------------------------
  27. # David Shaw <dshaw@jabberwocky.com> May-09-2006
  28. #
  29. # Checks for libcurl. DEFAULT-ACTION is the string yes or no to
  30. # specify whether to default to --with-libcurl or --without-libcurl.
  31. # If not supplied, DEFAULT-ACTION is yes. MINIMUM-VERSION is the
  32. # minimum version of libcurl to accept. Pass the version as a regular
  33. # version number like 7.10.1. If not supplied, any version is
  34. # accepted. ACTION-IF-YES is a list of shell commands to run if
  35. # libcurl was successfully found and passed the various tests.
  36. # ACTION-IF-NO is a list of shell commands that are run otherwise.
  37. # Note that using --without-libcurl does run ACTION-IF-NO.
  38. #
  39. # This macro #defines HAVE_LIBCURL if a working libcurl setup is
  40. # found, and sets @LIBCURL@ and @LIBCURL_CPPFLAGS@ to the necessary
  41. # values. Other useful defines are LIBCURL_FEATURE_xxx where xxx are
  42. # the various features supported by libcurl, and LIBCURL_PROTOCOL_yyy
  43. # where yyy are the various protocols supported by libcurl. Both xxx
  44. # and yyy are capitalized. See the list of AH_TEMPLATEs at the top of
  45. # the macro for the complete list of possible defines. Shell
  46. # variables $libcurl_feature_xxx and $libcurl_protocol_yyy are also
  47. # defined to 'yes' for those features and protocols that were found.
  48. # Note that xxx and yyy keep the same capitalization as in the
  49. # curl-config list (e.g. it's "HTTP" and not "http").
  50. #
  51. # Users may override the detected values by doing something like:
  52. # LIBCURL="-lcurl" LIBCURL_CPPFLAGS="-I/usr/myinclude" ./configure
  53. #
  54. # For the sake of sanity, this macro assumes that any libcurl that is
  55. # found is after version 7.7.2, the first version that included the
  56. # curl-config script. Note that it is very important for people
  57. # packaging binary versions of libcurl to include this script!
  58. # Without curl-config, we can only guess what protocols are available,
  59. # or use curl_version_info to figure it out at runtime.
  60. AC_DEFUN([LIBCURL_CHECK_CONFIG],
  61. [
  62. AH_TEMPLATE([LIBCURL_FEATURE_SSL],[Defined if libcurl supports SSL])
  63. AH_TEMPLATE([LIBCURL_FEATURE_KRB4],[Defined if libcurl supports KRB4])
  64. AH_TEMPLATE([LIBCURL_FEATURE_IPV6],[Defined if libcurl supports IPv6])
  65. AH_TEMPLATE([LIBCURL_FEATURE_LIBZ],[Defined if libcurl supports libz])
  66. AH_TEMPLATE([LIBCURL_FEATURE_ASYNCHDNS],[Defined if libcurl supports AsynchDNS])
  67. AH_TEMPLATE([LIBCURL_FEATURE_IDN],[Defined if libcurl supports IDN])
  68. AH_TEMPLATE([LIBCURL_FEATURE_SSPI],[Defined if libcurl supports SSPI])
  69. AH_TEMPLATE([LIBCURL_FEATURE_NTLM],[Defined if libcurl supports NTLM])
  70. AH_TEMPLATE([LIBCURL_PROTOCOL_HTTP],[Defined if libcurl supports HTTP])
  71. AH_TEMPLATE([LIBCURL_PROTOCOL_HTTPS],[Defined if libcurl supports HTTPS])
  72. AH_TEMPLATE([LIBCURL_PROTOCOL_FTP],[Defined if libcurl supports FTP])
  73. AH_TEMPLATE([LIBCURL_PROTOCOL_FTPS],[Defined if libcurl supports FTPS])
  74. AH_TEMPLATE([LIBCURL_PROTOCOL_FILE],[Defined if libcurl supports FILE])
  75. AH_TEMPLATE([LIBCURL_PROTOCOL_TELNET],[Defined if libcurl supports TELNET])
  76. AH_TEMPLATE([LIBCURL_PROTOCOL_LDAP],[Defined if libcurl supports LDAP])
  77. AH_TEMPLATE([LIBCURL_PROTOCOL_DICT],[Defined if libcurl supports DICT])
  78. AH_TEMPLATE([LIBCURL_PROTOCOL_TFTP],[Defined if libcurl supports TFTP])
  79. AH_TEMPLATE([LIBCURL_PROTOCOL_RTSP],[Defined if libcurl supports RTSP])
  80. AH_TEMPLATE([LIBCURL_PROTOCOL_POP3],[Defined if libcurl supports POP3])
  81. AH_TEMPLATE([LIBCURL_PROTOCOL_IMAP],[Defined if libcurl supports IMAP])
  82. AH_TEMPLATE([LIBCURL_PROTOCOL_SMTP],[Defined if libcurl supports SMTP])
  83. AC_ARG_WITH(libcurl,
  84. AS_HELP_STRING([--with-libcurl=PREFIX],[look for the curl library in PREFIX/lib and headers in PREFIX/include]),
  85. [_libcurl_with=$withval],[_libcurl_with=ifelse([$1],,[yes],[$1])])
  86. if test "$_libcurl_with" != "no" ; then
  87. AC_PROG_AWK
  88. _libcurl_version_parse="eval $AWK '{split(\$NF,A,\".\"); X=256*256*A[[1]]+256*A[[2]]+A[[3]]; print X;}'"
  89. _libcurl_try_link=yes
  90. if test -d "$_libcurl_with" ; then
  91. LIBCURL_CPPFLAGS="-I$withval/include"
  92. _libcurl_ldflags="-L$withval/lib"
  93. AC_PATH_PROG([_libcurl_config],[curl-config],[],
  94. ["$withval/bin"])
  95. else
  96. AC_PATH_PROG([_libcurl_config],[curl-config],[],[$PATH])
  97. fi
  98. if test x$_libcurl_config != "x" ; then
  99. AC_CACHE_CHECK([for the version of libcurl],
  100. [libcurl_cv_lib_curl_version],
  101. [libcurl_cv_lib_curl_version=`$_libcurl_config --version | $AWK '{print $[]2}'`])
  102. _libcurl_version=`echo $libcurl_cv_lib_curl_version | $_libcurl_version_parse`
  103. _libcurl_wanted=`echo ifelse([$2],,[0],[$2]) | $_libcurl_version_parse`
  104. if test $_libcurl_wanted -gt 0 ; then
  105. AC_CACHE_CHECK([for libcurl >= version $2],
  106. [libcurl_cv_lib_version_ok],
  107. [
  108. if test $_libcurl_version -ge $_libcurl_wanted ; then
  109. libcurl_cv_lib_version_ok=yes
  110. else
  111. libcurl_cv_lib_version_ok=no
  112. fi
  113. ])
  114. fi
  115. if test $_libcurl_wanted -eq 0 || test x$libcurl_cv_lib_version_ok = xyes ; then
  116. if test x"$LIBCURL_CPPFLAGS" = "x" ; then
  117. LIBCURL_CPPFLAGS=`$_libcurl_config --cflags`
  118. fi
  119. if test x"$LIBCURL" = "x" ; then
  120. LIBCURL=`$_libcurl_config --libs`
  121. # This is so silly, but Apple actually has a bug in their
  122. # curl-config script. Fixed in Tiger, but there are still
  123. # lots of Panther installs around.
  124. case "${host}" in
  125. powerpc-apple-darwin7*)
  126. LIBCURL=`echo $LIBCURL | sed -e 's|-arch i386||g'`
  127. ;;
  128. esac
  129. fi
  130. # All curl-config scripts support --feature
  131. _libcurl_features=`$_libcurl_config --feature`
  132. # Is it modern enough to have --protocols? (7.12.4)
  133. if test $_libcurl_version -ge 461828 ; then
  134. _libcurl_protocols=`$_libcurl_config --protocols`
  135. fi
  136. else
  137. _libcurl_try_link=no
  138. fi
  139. unset _libcurl_wanted
  140. fi
  141. if test $_libcurl_try_link = yes ; then
  142. # we didn't find curl-config, so let's see if the user-supplied
  143. # link line (or failing that, "-lcurl") is enough.
  144. LIBCURL=${LIBCURL-"$_libcurl_ldflags -lcurl"}
  145. AC_CACHE_CHECK([whether libcurl is usable],
  146. [libcurl_cv_lib_curl_usable],
  147. [
  148. _libcurl_save_cppflags=$CPPFLAGS
  149. CPPFLAGS="$LIBCURL_CPPFLAGS $CPPFLAGS"
  150. _libcurl_save_libs=$LIBS
  151. LIBS="$LIBCURL $LIBS"
  152. AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <curl/curl.h>]],[[
  153. /* Try and use a few common options to force a failure if we are
  154. missing symbols or can't link. */
  155. int x;
  156. curl_easy_setopt(NULL,CURLOPT_URL,NULL);
  157. x=CURL_ERROR_SIZE;
  158. x=CURLOPT_WRITEFUNCTION;
  159. x=CURLOPT_WRITEDATA;
  160. x=CURLOPT_ERRORBUFFER;
  161. x=CURLOPT_STDERR;
  162. x=CURLOPT_VERBOSE;
  163. if (x) {;}
  164. ]])],libcurl_cv_lib_curl_usable=yes,libcurl_cv_lib_curl_usable=no)
  165. CPPFLAGS=$_libcurl_save_cppflags
  166. LIBS=$_libcurl_save_libs
  167. unset _libcurl_save_cppflags
  168. unset _libcurl_save_libs
  169. ])
  170. if test $libcurl_cv_lib_curl_usable = yes ; then
  171. # Does curl_free() exist in this version of libcurl?
  172. # If not, fake it with free()
  173. _libcurl_save_cppflags=$CPPFLAGS
  174. CPPFLAGS="$CPPFLAGS $LIBCURL_CPPFLAGS"
  175. _libcurl_save_libs=$LIBS
  176. LIBS="$LIBS $LIBCURL"
  177. AC_CHECK_FUNC(curl_free,,
  178. AC_DEFINE(curl_free,free,
  179. [Define curl_free() as free() if our version of curl lacks curl_free.]))
  180. CPPFLAGS=$_libcurl_save_cppflags
  181. LIBS=$_libcurl_save_libs
  182. unset _libcurl_save_cppflags
  183. unset _libcurl_save_libs
  184. AC_DEFINE(HAVE_LIBCURL,1,
  185. [Define to 1 if you have a functional curl library.])
  186. AC_SUBST(LIBCURL_CPPFLAGS)
  187. AC_SUBST(LIBCURL)
  188. for _libcurl_feature in $_libcurl_features ; do
  189. AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_feature_$_libcurl_feature),[1])
  190. eval AS_TR_SH(libcurl_feature_$_libcurl_feature)=yes
  191. done
  192. if test "x$_libcurl_protocols" = "x" ; then
  193. # We don't have --protocols, so just assume that all
  194. # protocols are available
  195. _libcurl_protocols="HTTP FTP FILE TELNET LDAP DICT TFTP"
  196. if test x$libcurl_feature_SSL = xyes ; then
  197. _libcurl_protocols="$_libcurl_protocols HTTPS"
  198. # FTPS wasn't standards-compliant until version
  199. # 7.11.0 (0x070b00 == 461568)
  200. if test $_libcurl_version -ge 461568; then
  201. _libcurl_protocols="$_libcurl_protocols FTPS"
  202. fi
  203. fi
  204. # RTSP, IMAP, POP3 and SMTP were added in
  205. # 7.20.0 (0x071400 == 463872)
  206. if test $_libcurl_version -ge 463872; then
  207. _libcurl_protocols="$_libcurl_protocols RTSP IMAP POP3 SMTP"
  208. fi
  209. fi
  210. for _libcurl_protocol in $_libcurl_protocols ; do
  211. AC_DEFINE_UNQUOTED(AS_TR_CPP(libcurl_protocol_$_libcurl_protocol),[1])
  212. eval AS_TR_SH(libcurl_protocol_$_libcurl_protocol)=yes
  213. done
  214. else
  215. unset LIBCURL
  216. unset LIBCURL_CPPFLAGS
  217. fi
  218. fi
  219. unset _libcurl_try_link
  220. unset _libcurl_version_parse
  221. unset _libcurl_config
  222. unset _libcurl_feature
  223. unset _libcurl_features
  224. unset _libcurl_protocol
  225. unset _libcurl_protocols
  226. unset _libcurl_version
  227. unset _libcurl_ldflags
  228. fi
  229. if test x$_libcurl_with = xno || test x$libcurl_cv_lib_curl_usable != xyes ; then
  230. # This is the IF-NO path
  231. ifelse([$4],,:,[$4])
  232. else
  233. # This is the IF-YES path
  234. ifelse([$3],,:,[$3])
  235. fi
  236. unset _libcurl_with
  237. ])dnl