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libusb: require pkg-config support

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An alternative approach to show how much cleaner the pure pkg-config
way is.

This changes the discovery procedures for libusb-1.0 and libusb-0.1,
making them depend on pkg-config being properly installed and
configured, including the necessary build host configuration for the
cross-builds (see
http://www.flameeyes.eu/autotools-mythbuster/pkgconfig/cross-compiling.html)

It should make it possible to compile OpenOCD without changes and
extra effort on GNU/Linux, FreeBSD users would need to supply a .pc
file for their libusb implementation or add LIBUSB1_LIBS and
LIBUSB1_CFLAGS to the configure environment.

Change-Id: I826e378dd1e0d101a549a573b2c63212a7e00b64
Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Signed-off-by: Andreas Fritiofson <andreas.fritiofson@gmail.com>
Reviewed-on: http://openocd.zylin.com/1467
Reviewed-by: Xiaofan <xiaofanc@gmail.com>
Reviewed-by: Spencer Oliver <spen@spen-soft.co.uk>
Tested-by: Spencer Oliver <spen@spen-soft.co.uk>
This commit is contained in:
Paul Fertser
2013-09-11 23:07:59 +02:00
committed by Andreas Fritiofson
parent 10df176b0f
commit 191a5736c2
12 changed files with 46 additions and 19 deletions
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2
src/helper/Makefile.am
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@@ -5,6 +5,8 @@ noinst_LTLIBRARIES = libhelper.la
CONFIGFILES = options.c time_support_common.c
libhelper_la_CPPFLAGS = $(AM_CPPFLAGS) $(LIBUSB1_CFLAGS)
libhelper_la_SOURCES = \
binarybuffer.c \
$(CONFIGFILES) \