build: Fix out-of-tree builds
Fixes:
In file included from ../../../include/osmocom/core/msgb.h:25:0,
from ../../../include/osmocom/sim/sim.h:4,
from ../../../src/sim/reader_pcsc.c:30:
../../../include/osmocom/core/bits.h:6:35: fatal error: osmocom/core/bit16gen.h: No such file or directory
#include <osmocom/core/bit16gen.h>
In file included from ../../include/osmocom/core/msgb.h:25:0,
from ../../utils/osmo-sim-test.c:26:
../../include/osmocom/core/bits.h:6:35: fatal error: osmocom/core/bit16gen.h: No such file or directory
#include <osmocom/core/bit16gen.h>
diff --git a/src/sim/Makefile.am b/src/sim/Makefile.am
index 185e8df..e241dc9 100644
--- a/src/sim/Makefile.am
+++ b/src/sim/Makefile.am
@@ -2,7 +2,7 @@
# Please read Chapter 6 "Library interface versions" of the libtool documentation before making any modification
LIBVERSION=0:0:0
-INCLUDES = $(all_includes) -I$(top_srcdir)/include
+AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)/include
AM_CFLAGS = -fPIC -Wall $(PCSC_CFLAGS)
AM_LDFLAGS = $(COVERAGE_LDFLAGS)
diff --git a/utils/Makefile.am b/utils/Makefile.am
index 41f91f9..63a32ed 100644
--- a/utils/Makefile.am
+++ b/utils/Makefile.am
@@ -1,5 +1,5 @@
if ENABLE_UTILITIES
-AM_CPPFLAGS = -I$(top_srcdir)/include
+AM_CPPFLAGS = -I$(top_srcdir)/include -I$(top_builddir)/include
AM_CFLAGS = -Wall
bin_PROGRAMS = osmo-arfcn osmo-auc-gen