configure: avoid pkg-config usage for http engine

Signed-off-by: David Disseldorp <ddiss@suse.de>

diff --git a/configure b/configure
index 0637b105fb2a36ef0f0c296fb15d2ec5aa884eb4..a03f7fa004a1c8c006e724538ae77ca54aa43cad 100755 (executable)
--- a/configure
+++ b/configure
@@ -14,12 +14,13 @@ else
 fi
 
 TMPC="${TMPDIR1}/fio-conf-${RANDOM}-$$-${RANDOM}.c"
+TMPC2="${TMPDIR1}/fio-conf-${RANDOM}-$$-${RANDOM}-2.c"
 TMPO="${TMPDIR1}/fio-conf-${RANDOM}-$$-${RANDOM}.o"
 TMPE="${TMPDIR1}/fio-conf-${RANDOM}-$$-${RANDOM}.exe"
 
 # NB: do not call "exit" in the trap handler; this is buggy with some shells;
 # see <1285349658-3122-1-git-send-email-loic.minier@linaro.org>
-trap "rm -f $TMPC $TMPO $TMPE" EXIT INT QUIT TERM
+trap "rm -f $TMPC $TMPC2 $TMPO $TMPE" EXIT INT QUIT TERM
 
 rm -rf config.log
 
@@ -1573,12 +1574,53 @@ print_config "IPv6 helpers" "$ipv6"
 if test "$http" != "yes" ; then
   http="no"
 fi
-if test "$disable_http" != "yes"  && $(pkg-config --exists libcurl openssl); then
-  if $(pkg-config --atleast-version=1.1.0 openssl); then
+# check for openssl >= 1.1.0, which uses an opaque HMAC_CTX pointer
+cat > $TMPC << EOF
+#include <curl/curl.h>
+#include <openssl/hmac.h>
+
+int main(int argc, char **argv)
+{
+  CURL *curl;
+  HMAC_CTX *ctx;
+
+  curl = curl_easy_init();
+  curl_easy_cleanup(curl);
+
+  ctx = HMAC_CTX_new();
+  HMAC_CTX_reset(ctx);
+  HMAC_CTX_free(ctx);
+  return 0;
+}
+EOF
+# openssl < 1.1.0 uses the HMAC_CTX type directly
+cat > $TMPC2 << EOF
+#include <curl/curl.h>
+#include <openssl/hmac.h>
+
+int main(int argc, char **argv)
+{
+  CURL *curl;
+  HMAC_CTX ctx;
+
+  curl = curl_easy_init();
+  curl_easy_cleanup(curl);
+
+  HMAC_CTX_init(&ctx);
+  HMAC_CTX_cleanup(&ctx);
+  return 0;
+}
+EOF
+if test "$disable_http" != "yes"; then
+  HTTP_LIBS="-lcurl -lssl -lcrypto"
+  if compile_prog "" "$HTTP_LIBS" "curl-new-ssl"; then
     output_sym "CONFIG_HAVE_OPAQUE_HMAC_CTX"
+    http="yes"
+    LIBS="$HTTP_LIBS $LIBS"
+  elif mv $TMPC2 $TMPC && compile_prog "" "$HTTP_LIBS" "curl-old-ssl"; then
+    http="yes"
+    LIBS="$HTTP_LIBS $LIBS"
   fi
-  LIBS="$(pkg-config --libs libcurl openssl) $LIBS"
-  http="yes"
 fi
 print_config "http engine" "$http"