kumquat-buildroot/package/eigen/eigen.mk
Julien Olivain 74e6d6128b package/eigen: use cmake-package infra
The eigen package was introduced as a generic package, but upstream was
in fact using CMake.

The motivation of this change is to fix package detection with CMake.

Eigen3 library normally installs a signature file named
"signature_of_eigen3_matrix_library" to help library detection:
https://gitlab.com/libeigen/eigen/-/blob/3.3.7/CMakeLists.txt#L423

The library also provide a CMake macro that use this file to
detect it:
https://gitlab.com/libeigen/eigen/-/blob/3.3.7/cmake/FindEigen3.cmake#L76

Without the signature file installed, packages searching for this
library with this method will fail. Other packages usings pkg-config are
not affected by this issue.

By using the cmake-package infrastructure, all the needed files
are now installed, fixing this CMake detection issue.

Other changes in this patch:
- Updated the Eigen git repository to the new url:
  https://gitlab.com/libeigen/eigen
- Removed all build and install staging commands
  (now included in upstream cmake)
- Package needs EIGEN_SUPPORTS_IN_SOURCE_BUILD = NO
- Removed the BR2_PACKAGE_EIGEN_UNSUPPORTED_MODULES option,
  as this option is not proposed by the upstream CMake.
  Unsupported module header files are now unconditionally installed. As
  such, no need to introduce a legacy entry for
  BR2_PACKAGE_EIGEN_UNSUPPORTED_MODULES: users that had it enabled will
  still get the files installed, while those that did not will get them
  installed now.
- Updated hash for source package, because the first component in the
  stored paths changed from eigen-eigen-323c052e1731/ to eigen-3.3.7/
  and some mercurial related files (.hg_archival.txt, .hgtags) got
  dropped after the conversion to git.
- Reformat hash file with two spaces delimiters
- Define EIGEN_CONF_OPTS to set pkg-config .pc install path

Signed-off-by: Julien Olivain <juju@cotds.org>
Tested-by: Matthew Weber <matthew.weber@rockwellcollins.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2020-06-16 08:50:56 +02:00

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Makefile

################################################################################
#
# eigen
#
################################################################################
EIGEN_VERSION = 3.3.7
EIGEN_SOURCE = eigen-$(EIGEN_VERSION).tar.bz2
EIGEN_SITE = https://gitlab.com/libeigen/eigen/-/archive/$(EIGEN_VERSION)
EIGEN_LICENSE = MPL2, BSD-3-Clause, LGPL-2.1
EIGEN_LICENSE_FILES = COPYING.MPL2 COPYING.BSD COPYING.LGPL COPYING.README
EIGEN_INSTALL_STAGING = YES
EIGEN_INSTALL_TARGET = NO
EIGEN_SUPPORTS_IN_SOURCE_BUILD = NO
# Default Eigen CMake installs .pc file in /usr/share/pkgconfig
# change it to /usr/lib/pkgconfig, to be consistent with other packages.
EIGEN_CONF_OPTS = -DPKGCONFIG_INSTALL_DIR=/usr/lib/pkgconfig
$(eval $(cmake-package))