Normally pkg-config would remove the system library path from
--libs output. Defining PKG_CONFIG_SYSTEM_LIBRARY_PATH helps
it do so. The extra mentions of system library path in the
linking commands is unsightly but probabaly harmless.
PKG_CONFIG_SYSROOT should not be set because MXE uses fully
qualified paths. However, to satisfy the Qt build system's
cross-compiling "sanity check", qtbase.mk defines
PKG_CONFIG_SYSROOT_DIR=/
This causes pkg-config to prefix the system include and library
paths with an extra /. Pkg-config does not strip these prefixed
paths from --cflags and --libs output. The workaround here is
to remove the PKG_CONFIG_SYSROOT_DIR definition in the wrapper
script for pkg-config.
The following script was applied:
sed ':a;/part of MXE.$/{N;s/\n//;ba}' -i $(git grep -l 'part of MXE')
sed 's/\(part of MXE\).*\(See index.html\)/\1. \2/' -i \
$(git grep -l 'part of MXE.*See index.html')
before='This file is part of MXE. See index.html for further information.'
after='This file is part of MXE. See LICENSE.md for licensing information.'
sed "s/$before/$after/" -i $(git grep -l 'part of MXE')
Then git grep 'index.html for further information' revealed two other files.
One of them was patched manually (patch.mk). Makefile has text
"See index.html for further information" unrelated to licensing.
See https://github.com/mxe/mxe/issues/1500#issuecomment-241340792
FindOpenSSL.cmake bundled with cmake older than 2.8.12-rc1 uses
CMAKE_CROSS_COMPILING, which is incorrect because the real variable name
is CMAKE_CROSSCOMPILING. Because it is not possible to modify users'
CMake installation, work around it here.
This fixes building libwebsockets on Ubuntu 13.10. (I only tested 14.04
when merging the pull request.)
Signed-off-by: Timothy Gu <timothygu99@gmail.com>
Since we need pkgconf for Cflags.private support, it seems like a
logical place for these types of config files instead of being
spread over Makefile, binutils, and gcc.
Tony Theodore
Mark Brand
Viktor Szakats
Boris Nagaev
Christian Frisson
Timothy Gu
Martin Müllenhaupt