[PATCH v2] configure: Loosen GCC requirement from 7.5.0 to 7.4.0

[nia]

As discussed in issue 614, we're shipping GCC 7.4.0 as the
system compiler in NetBSD 9, the most recent stable branch,
and are still actively interested in QEMU on this platform.

The differences between GCC 7.5.0 and 7.4.0 are trivial.

Signed-off-by: Nia Alarie <nia@NetBSD.org>
---
 configure | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/configure b/configure
index 1043ccce4f..b0b1a1cc25 100755
--- a/configure
+++ b/configure
@@ -2094,8 +2094,8 @@ cat > $TMPC << EOF
 #  endif
 # endif
 #elif defined(__GNUC__) && defined(__GNUC_MINOR__)
-# if __GNUC__ < 7 || (__GNUC__ == 7 && __GNUC_MINOR__ < 5)
-#  error You need at least GCC v7.5.0 to compile QEMU
+# if __GNUC__ < 7 || (__GNUC__ == 7 && __GNUC_MINOR__ < 4)
+#  error You need at least GCC v7.4.0 to compile QEMU
 # endif
 #else
 # error You either need GCC or Clang to compiler QEMU
@@ -2103,7 +2103,7 @@ cat > $TMPC << EOF
 int main (void) { return 0; }
 EOF
 if ! compile_prog "" "" ; then
-    error_exit "You need at least GCC v7.5 or Clang v6.0 (or XCode Clang 
v10.0)"
+    error_exit "You need at least GCC v7.4 or Clang v6.0 (or XCode Clang 
v10.0)"
 fi
 
 # Accumulate -Wfoo and -Wno-bar separately.
-- 
2.33.0