From 23be4e435f8b61c4603bd7822b3fb3c2c46cb16a Mon Sep 17 00:00:00 2001
From: Mathias K <kesmtp@freenet.de>
Date: Wed, 30 Oct 2013 16:52:10 +0100
Subject: [PATCH] build: remove hard coded ftdi and usb libraries

This patch remove the hardcoded libraries. Also a check for
libftdi1 installations was added. This check fix an issue
with gentoo and maybe other systems.

Change-Id: Ieff9ec4d66ee0f3e6b22261a10e4cab9f26b6b51
Signed-off-by: Mathias K <kesmtp@freenet.de>
Reviewed-on: http://openocd.zylin.com/1759
Tested-by: jenkins
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
---
 configure.ac    | 19 +++++++++++++++----
 src/Makefile.am | 24 +++---------------------
 2 files changed, 18 insertions(+), 25 deletions(-)

diff --git a/configure.ac b/configure.ac
index a5abdfd3c0..968e381be8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -999,19 +999,29 @@ fi
 
 if test $build_ft2232_libftdi = yes -o $build_usb_blaster_libftdi = yes -o \
   $build_openjtag_ftdi = yes; then
-  # We assume: the package is preinstalled in the proper place
-  # these present as 2 libraries..
-  LIBS="$LIBS -lftdi -lusb"
+
+  # we can have libftdi or libftdi1, so check it and use the latest one
+  PKG_CHECK_MODULES([LIBFTDI], [libftdi1], [use_libftdi=yes], [use_libftdi=no])
+  if test $use_libftdi = no; then
+	PKG_CHECK_MODULES([LIBFTDI], [libftdi], [use_libftdi=yes], [use_libftdi=no])
+  fi
+  if test $use_libftdi = no; then
+	AC_MSG_ERROR([The libftdi driver is not present on your system.])
+  fi
+
   #
   # Try to build a small program.
   AC_MSG_CHECKING([Build & Link with libftdi...])
 
   LDFLAGS_SAVE=$LDFLAGS
   CFLAGS_SAVE=$CFLAGS
+  LIBS_SAVE=$LIBS
   _LDFLAGS=`eval echo $LDFLAGS`
   _CFLAGS=`eval echo $CFLAGS`
+  _LIBS=`eval echo $LIBS`
   LDFLAGS=$_LDFLAGS
-  CFLAGS=$_CFLAGS
+  CFLAGS="$_CFLAGS $LIBFTDI_CFLAGS"
+  LIBS="$_LIBS $LIBFTDI_LIBS"
 
   AC_RUN_IFELSE([AC_LANG_PROGRAM([[
 #include <stdio.h>
@@ -1075,6 +1085,7 @@ enum ftdi_chip_type x = TYPE_232H;
   # Restore the 'unexpanded ldflags'
   LDFLAGS=$LDFLAGS_SAVE
   CFLAGS=$CFLAGS_SAVE
+  LIBS=$LIBS_SAVE
 fi
 
 PKG_CHECK_MODULES([LIBUSB1], [libusb-1.0], [
diff --git a/src/Makefile.am b/src/Makefile.am
index 3413ba953f..48af21d4b3 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -52,7 +52,7 @@ libopenocd_la_CPPFLAGS += -DGITVERSION=\"`cd $(top_srcdir) && git describe`\"
 endif
 
 # add default CPPFLAGS
-libopenocd_la_CPPFLAGS += $(AM_CPPFLAGS) $(CPPFLAGS)
+libopenocd_la_CPPFLAGS += $(AM_CPPFLAGS) $(CPPFLAGS) $(LIBFTDI_CFLAGS)
 
 # the library search path.
 libopenocd_la_LDFLAGS = $(all_libraries)
@@ -63,25 +63,6 @@ else
 MINGWLDADD =
 endif
 
-if FT2232_LIBFTDI
-FTDI2232LIB = -lftdi -lusb
-else
-if PRESTO_LIBFTDI
-FTDI2232LIB = -lftdi -lusb
-else
-FTDI2232LIB =
-endif
-endif
-
-LIBUSB =
-if USE_LIBUSB1
-LIBUSB += $(LIBUSB1_LIBS)
-endif
-
-if USE_LIBUSB0
-LIBUSB += $(LIBUSB0_LIBS)
-endif
-
 libopenocd_la_LIBADD = \
 	$(top_builddir)/src/xsvf/libxsvf.la \
 	$(top_builddir)/src/svf/libsvf.la \
@@ -93,7 +74,8 @@ libopenocd_la_LIBADD = \
 	$(top_builddir)/src/server/libserver.la \
 	$(top_builddir)/src/rtos/librtos.la \
 	$(top_builddir)/src/helper/libhelper.la \
-	$(FTDI2232LIB) $(MINGWLDADD) $(LIBUSB)
+	$(LIBFTDI_LIBS) $(MINGWLDADD) \
+	$(LIBUSB1_LIBS) $(LIBUSB0_LIBS)
 
 STARTUP_TCL_SRCS = \
 	$(srcdir)/helper/startup.tcl \
-- 
2.30.2