From d7d44a8637b499cffcf7452f7642b6561aa9c859 Mon Sep 17 00:00:00 2001
From: ygrek <ygrek@autistici.org>
Date: Sun, 3 Sep 2017 11:31:32 +0100
Subject: [PATCH] configure: check libcurl version

---
 README.md    |  2 ++
 configure    | 14 ++++++++++++++
 configure.ac |  8 ++++++++
 3 files changed, 24 insertions(+)

diff --git a/README.md b/README.md
index d72bbf1..b7105ba 100644
--- a/README.md
+++ b/README.md
@@ -11,6 +11,8 @@ supporting HTTP and a multitude of other network protocols.
 This is a continuation of ocurl project by Lars Nilsson,
 previously hosted at http://ocurl.sourceforge.net/
 
+Minimum required libcurl version : 7.17.0
+
 Building on Windows with ocaml/msvc
 ===================================
 
diff --git a/configure b/configure
index 47d22a6..fd22924 100755
--- a/configure
+++ b/configure
@@ -2047,6 +2047,8 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
+MIN_LIBCURL_VERSION=7.17.0
+
 ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
@@ -2859,6 +2861,18 @@ fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CURLLIBS" >&5
 $as_echo "$CURLLIBS" >&6; }
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for libcurl version >= $MIN_LIBCURL_VERSION" >&5
+$as_echo_n "checking for libcurl version >= $MIN_LIBCURL_VERSION... " >&6; }
+LIBCURL_VERSION=`pkg-config libcurl --modversion || curl-config --version`
+(pkg-config libcurl && pkg-config libcurl --atleast-version=${MIN_LIBCURL_VERSION}) || curl-config --checkfor ${MIN_LIBCURL_VERSION}
+if  test "$?" -eq 0 ; then :
+
+else
+  as_fn_error $? "${LIBCURL_VERSION} is too old" "$LINENO" 5
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: ${LIBCURL_VERSION}" >&5
+$as_echo "${LIBCURL_VERSION}" >&6; }
+
 ac_aux_dir=
 for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
   if test -f "$ac_dir/install-sh"; then
diff --git a/configure.ac b/configure.ac
index 46dd134..ceb98bd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -4,6 +4,8 @@ dnl
 
 AC_INIT(ocurl,0.7.10)
 
+MIN_LIBCURL_VERSION=7.17.0
+
 AC_PROG_CC()
 
 AC_MSG_CHECKING([for libcurl cflags])
@@ -16,6 +18,12 @@ CURLLIBS=`pkg-config libcurl --libs || curl-config --libs`
 AS_IF([ test "$?" -eq 0 ],,[AC_MSG_ERROR([libcurl was not found])] )
 AC_MSG_RESULT([$CURLLIBS])
 
+AC_MSG_CHECKING([for libcurl version >= $MIN_LIBCURL_VERSION])
+LIBCURL_VERSION=`pkg-config libcurl --modversion || curl-config --version`
+(pkg-config libcurl && pkg-config libcurl --atleast-version=${MIN_LIBCURL_VERSION}) || curl-config --checkfor ${MIN_LIBCURL_VERSION}
+AS_IF([ test "$?" -eq 0 ],,[AC_MSG_ERROR([${LIBCURL_VERSION} is too old])])
+AC_MSG_RESULT([${LIBCURL_VERSION}])
+
 AC_PROG_INSTALL()
 AC_PROG_OCAML()
 AC_PROG_FINDLIB()
-- 
2.11.4.GIT