Make finding openssl program a configure or meson option

Various test suites use the "openssl" program as part of their setup.
There isn't a way to override which openssl program is to be used,
other than by fiddling with the path, perhaps.  This has gotten
increasingly problematic because different versions of openssl have
different capabilities and do different things by default.

This patch checks for an openssl binary in configure and meson setup,
with appropriate ways to override it.  This is similar to how "lz4"
and "zstd" are handled, for example.  The meson build system actually
already did this, but the result was only used in some places.  This
is now applied more uniformly.

Reviewed-by: Michael Paquier <[email protected]>
Discussion: https://www.postgresql.org/message-id/flat/dc638b75-a16a-007d-9e1c-d16ed6cf0ad2%40enterprisedb.com

1 files changed, 55 insertions, 0 deletions

diff --git a/configure b/configure
index 5ea790d6380..3966368b8d9 100755
--- a/configure
+++ b/configure
@@ -648,6 +648,7 @@ PG_CRC32C_OBJS
 CFLAGS_ARMV8_CRC32C
 CFLAGS_SSE42
 LIBOBJS
+OPENSSL
 ZSTD
 LZ4
 UUID_LIBS
@@ -14112,6 +14113,60 @@ done
 
 fi
 
+if test -z "$OPENSSL"; then
+  for ac_prog in openssl
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
+$as_echo_n "checking for $ac_word... " >&6; }
+if ${ac_cv_path_OPENSSL+:} false; then :
+  $as_echo_n "(cached) " >&6
+else
+  case $OPENSSL in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_OPENSSL="$OPENSSL" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+    for ac_exec_ext in '' $ac_executable_extensions; do
+  if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_OPENSSL="$as_dir/$ac_word$ac_exec_ext"
+    $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+  done
+IFS=$as_save_IFS
+
+  ;;
+esac
+fi
+OPENSSL=$ac_cv_path_OPENSSL
+if test -n "$OPENSSL"; then
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OPENSSL" >&5
+$as_echo "$OPENSSL" >&6; }
+else
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+fi
+
+
+  test -n "$OPENSSL" && break
+done
+
+else
+  # Report the value of OPENSSL in configure's output in all cases.
+  { $as_echo "$as_me:${as_lineno-$LINENO}: checking for OPENSSL" >&5
+$as_echo_n "checking for OPENSSL... " >&6; }
+  { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OPENSSL" >&5
+$as_echo "$OPENSSL" >&6; }
+fi
+
 if test "$with_ssl" = openssl ; then
   ac_fn_c_check_header_mongrel "$LINENO" "openssl/ssl.h" "ac_cv_header_openssl_ssl_h" "$ac_includes_default"
 if test "x$ac_cv_header_openssl_ssl_h" = xyes; then :