commit 6be593578a26854bbc2e373b562520412916c202
author William A. Kennington III <wak@google.com> Wed Jan 24 15:06:33 2018 -0800
committer Brad Bishop <bradleyb@fuzziesquirrel.com> Thu Feb 01 05:17:23 2018 +0000
tree c15c9f76a9aab54d8069c49fae5edf617375895c
parent 862ac59a52945ada1a6e641ab625dc18ec614192

configure: Use pkg-config for CPPFLAGS

If you build phosphor-dbus-interfaces against an sdbusplus that resides
in a non-standard include location the configure system should still be able
to locate the headers based on the pkg-config information. Since
AC_CHECK_HEADERS uses the CPPFLAGS variable when calling `cpp` to check for
headers, we need to temporarily add the CFLAGS provide by the sdbusplus module.
This populates CPPFLAGS with the include prefixes necessary to find the
headers for sdpbusplus.

Change-Id: I1e3fc50daf5aa5e3025441d469db20fcc0f7f0b4
Signed-off-by: William A. Kennington III <wak@google.com>

configure.ac

diff --git a/configure.ac b/configure.ac
index ee42dbe..92b9b73 100644
--- a/configure.ac
+++ b/configure.ac
@@ -37,7 +37,10 @@
     AX_APPEND_COMPILE_FLAGS([-Wall -Werror], [CXXFLAGS])
 
     # Checks for header files.
+    old_CPPFLAGS="$CPPFLAGS"
+    CPPFLAGS="$SDBUSPLUS_CFLAGS $CPPFLAGS"
     AC_CHECK_HEADER(sdbusplus/server.hpp, ,[AC_MSG_ERROR([Could not find sdbusplus/server.hpp...sdbusplus package required])])
+    CPPFLAGS="$old_CPPFLAGS"
 
     # Checks for library functions.
     LT_INIT([dlopen disable-static shared])