build: remove unused all_includes and use AM_CPPFLAGS
Preprocessor flags are best placed in AM_CPPFLAGS. Remove use of the
unused all_includes variable, which is never set.
diff --git a/src/Makefile.am b/src/Makefile.am
index f2b1b83..65494a5 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -2,7 +2,8 @@
# Please read Chapter 6 "Library interface versions" of the libtool documentation before making any modification
LIBVERSION=5:0:0
-AM_CFLAGS = -Wall $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)/include
+AM_CPPFLAGS = -I$(top_srcdir)/include -I$(top_builddir)/include
+AM_CFLAGS = -Wall
lib_LTLIBRARIES = libosmocore.la
diff --git a/src/codec/Makefile.am b/src/codec/Makefile.am
index f4dec62..b4834e5 100644
--- a/src/codec/Makefile.am
+++ b/src/codec/Makefile.am
@@ -2,7 +2,8 @@
# Please read Chapter 6 "Library interface versions" of the libtool documentation before making any modification
LIBVERSION=0:0:0
-AM_CFLAGS = -Wall $(all_includes) -I$(top_srcdir)/include
+AM_CPPFLAGS = -I$(top_srcdir)/include
+AM_CFLAGS = -Wall
lib_LTLIBRARIES = libosmocodec.la
diff --git a/src/gb/Makefile.am b/src/gb/Makefile.am
index 8a96628..70caa1f 100644
--- a/src/gb/Makefile.am
+++ b/src/gb/Makefile.am
@@ -2,7 +2,8 @@
# Please read Chapter 6 "Library interface versions" of the libtool documentation before making any modification
LIBVERSION=3:1:0
-AM_CFLAGS = -Wall ${GCC_FVISIBILITY_HIDDEN} -fno-strict-aliasing $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)/include
+AM_CPPFLAGS = -I$(top_srcdir)/include -I$(top_builddir)/include
+AM_CFLAGS = -Wall ${GCC_FVISIBILITY_HIDDEN} -fno-strict-aliasing
# FIXME: this should eventually go into a milenage/Makefile.am
noinst_HEADERS = common_vty.h
diff --git a/src/gsm/Makefile.am b/src/gsm/Makefile.am
index 9c7df5a..828aa50 100644
--- a/src/gsm/Makefile.am
+++ b/src/gsm/Makefile.am
@@ -2,7 +2,8 @@
# Please read Chapter 6 "Library interface versions" of the libtool documentation before making any modification
LIBVERSION=6:0:1
-AM_CFLAGS = -Wall ${GCC_FVISIBILITY_HIDDEN} $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)/include
+AM_CPPFLAGS = -I$(top_srcdir)/include -I$(top_builddir)/include
+AM_CFLAGS = -Wall ${GCC_FVISIBILITY_HIDDEN}
# FIXME: this should eventually go into a milenage/Makefile.am
noinst_HEADERS = milenage/aes.h milenage/aes_i.h milenage/aes_wrap.h \
diff --git a/src/vty/Makefile.am b/src/vty/Makefile.am
index 2e234c8..d4be3f0 100644
--- a/src/vty/Makefile.am
+++ b/src/vty/Makefile.am
@@ -2,7 +2,8 @@
# Please read Chapter 6 "Library interface versions" of the libtool documentation before making any modification
LIBVERSION=0:1:0
-AM_CFLAGS = -Wall $(all_includes) -I$(top_srcdir)/include -I$(top_builddir)/include
+AM_CPPFLAGS = -I$(top_srcdir)/include -I$(top_builddir)/include
+AM_CFLAGS = -Wall
if ENABLE_VTY
lib_LTLIBRARIES = libosmovty.la