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libcurl.m4 9.9 KB

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