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From fe3b43d83d8388734c67480b4191a118e506dc45 Mon Sep 17 00:00:00 2001
From: Petr Pisar <ppisar@redhat.com>
Date: Mon, 18 Aug 2025 20:02:29 +0200
Subject: [PATCH 3/3] autoconf: Define extra_cflags variable (#169)
Building with autotools on Linux produces bzip3.pc with a garbage in
Cflags:
[...]
Libs: -L${libdir} -lbzip3
Cflags: -I${includedir}@extra_cflags@
This bug was introduced in dca13c82311e60cc47f01623d6281119024b5b44
commit (Fix handling of DLLs on Windows) which added @extra_cflags@ to
pkg-config file and defined the variable in CMake script, but forgot
to define it in an Autoconf script.
This patch defines it unconditionally in the Autoconf script as an
empty string, assuming people don't use this script on Windows
platforms.
---
configure.ac | 1 +
1 file changed, 1 insertion(+)
diff --git a/configure.ac b/configure.ac
index 031b3e6..8314417 100644
--- a/configure.ac
+++ b/configure.ac
@@ -34,6 +34,7 @@ AM_CONDITIONAL([ENABLE_ARCH_NATIVE], [test x"$enable_arch_native" != xno])
AC_ARG_ENABLE([static-exe],
AS_HELP_STRING([--enable-static-exe], [Enable static builds of the executable.]))
AM_CONDITIONAL([ENABLE_STATIC], [test x"$enable_static_exe" = xyes])
+AC_SUBST([extra_cflags], [])
AM_COND_IF([PASSED_CFLAGS], [
AC_MSG_NOTICE([skipping compiler feature detection, using '$CFLAGS'])
--
2.50.1
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