From: Alexandre Janniaux <ajanni@videolabs.io>
Date: Mon, 11 Jan 2021 11:31:53 +0000 (+0100)
Subject: configure.ac: add AC_PROG_CPP
X-Git-Tag: v3.5.2~27^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b4c5bf51436d876631e12ed8533e86405f8581d7;p=thirdparty%2Flibarchive.git

configure.ac: add AC_PROG_CPP

Otherwise, the preprocessor is not detected and it leads to failure with
empty $CPP variable being used on la_TYPE_UID_T, leading to a cascade of
detection errors and redefinition of some types.
---

diff --git a/configure.ac b/configure.ac
index 3b4602f5e..d51fa19cc 100644
--- a/configure.ac
+++ b/configure.ac
@@ -107,6 +107,7 @@ AC_SUBST(PLATFORMCPPFLAGS)
 AC_PROG_CC
 AC_PROG_CC_C99
 AM_PROG_CC_C_O
+AC_PROG_CPP
 AC_USE_SYSTEM_EXTENSIONS
 AC_LIBTOOL_WIN32_DLL
 AC_PROG_LIBTOOL