From ed1a239f6f1df12cf5800b07ee0b707afe5a98f9 Mon Sep 17 00:00:00 2001
From: Jeroen Vermeulen <jtvjtv@gmail.com>
Date: Fri, 3 Nov 2023 18:23:54 +0100
Subject: [PATCH] Add `$CPPFLAGS` to preprocessor command line.

---
 configure    | 2 +-
 configure.ac | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index dd668561c..6c4a33f7d 100755
--- a/configure
+++ b/configure
@@ -18942,7 +18942,7 @@ printf "%s\n" "yes" >&6; }
 # we want, and generate the actual libpqxx configuration header from the
 # output.
 mkdir -p include/pqxx
-${CXXCPP} ${CXXFLAGS} "$srcdir/config-tests/cxx-features.cc" | \
+${CXXCPP} ${CXXFLAGS} ${CPPFLAGS} "$srcdir/config-tests/cxx-features.cc" | \
     "$srcdir/tools/generate_cxx_checks.py" \
         --config --output include/pqxx/cxx_features.hxx
 
diff --git a/configure.ac b/configure.ac
index 94bee46c6..135e0da33 100644
--- a/configure.ac
+++ b/configure.ac
@@ -705,7 +705,7 @@ AC_MSG_RESULT(yes)
 # we want, and generate the actual libpqxx configuration header from the
 # output.
 mkdir -p include/pqxx
-${CXXCPP} ${CXXFLAGS} "$srcdir/config-tests/cxx-features.cc" | \
+${CXXCPP} ${CXXFLAGS} ${CPPFLAGS} "$srcdir/config-tests/cxx-features.cc" | \
     "$srcdir/tools/generate_cxx_checks.py" \
         --config --output include/pqxx/cxx_features.hxx