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# Detect eigen3
#
# Priority
# 0. EIGENDIR if set
# 1. OPENSCAD_LIBRARIES eigen3
# 3. system's standard include paths for eigen3
eigen {
# read environment variables
OPENSCAD_LIBRARIES_DIR = $$(OPENSCAD_LIBRARIES)
EIGEN_DIR = $$(EIGENDIR)
# Optionally specify location of Eigen3 using the
# OPENSCAD_LIBRARIES env. variable
!isEmpty(OPENSCAD_LIBRARIES_DIR) {
isEmpty(EIGEN_INCLUDEPATH) {
exists($$OPENSCAD_LIBRARIES_DIR/include/eigen3) {
EIGEN_INCLUDEPATH = $$OPENSCAD_LIBRARIES_DIR/include/eigen3
}
}
}
!isEmpty(EIGEN_DIR) {
EIGEN_INCLUDEPATH = $$EIGEN_DIR
message("User set EIGEN location: $$EIGEN_INCLUDEPATH")
}
isEmpty(EIGEN_INCLUDEPATH) {
linux*|hurd*|unix: EIGEN_INCLUDEPATH = /usr/include/eigen3
freebsd-g++: EIGEN_INCLUDEPATH = /usr/local/include/eigen3
netbsd*: EIGEN_INCLUDEPATH = /usr/pkg/include/eigen3
macx: EIGEN_INCLUDEPATH = /opt/local/include/eigen3
}
!exists($$EIGEN_INCLUDEPATH/Eigen/Core) {
EIGEN_CFLAGS = $$system("pkg-config --cflags eigen3")
EIGEN_INCLUDEPATH = $$replace(EIGEN_CFLAGS,"-I","")
}
# disable Eigen SIMD optimizations for platforms where it breaks compilation
!macx {
!freebsd-g++ {
QMAKE_CXXFLAGS += -DEIGEN_DONT_ALIGN
}
}
# EIGEN being under 'include/eigen3' needs special prepending
contains(QT_VERSION, ^5\\..*) {
QMAKE_INCDIR = $$EIGEN_INCLUDEPATH $$QMAKE_INCDIR
} else {
QMAKE_INCDIR_QT = $$EIGEN_INCLUDEPATH $$QMAKE_INCDIR_QT
}
# qmakespecs on netbsd prepend system includes, we need eigen first.
netbsd* {
QMAKE_CXXFLAGS = -I$$EIGEN_INCLUDEPATH $$QMAKE_CXXFLAGS
}
} # eigen
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