diff --git a/libraries/nlopt/nlopt.SlackBuild b/libraries/nlopt/nlopt.SlackBuild
index ba241fc6cf..780b93d3dc 100644
--- a/libraries/nlopt/nlopt.SlackBuild
+++ b/libraries/nlopt/nlopt.SlackBuild
@@ -25,7 +25,7 @@
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=nlopt
-VERSION=${VERSION:-2.4.2}
+VERSION=${VERSION:-2.7.1}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
@@ -79,29 +79,24 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
-CFLAGS="$SLKCFLAGS" \
-CXXFLAGS="$SLKCFLAGS" \
-./configure \
-  --prefix=/usr \
-  --libdir=/usr/lib${LIBDIRSUFFIX} \
-  --sysconfdir=/etc \
-  --localstatedir=/var \
-  --mandir=/usr/man \
-  --docdir=/usr/doc/$PRGNAM-$VERSION \
-  --enable-shared \
-  --build=$ARCH-slackware-linux
-
-make
-make install DESTDIR=$PKG
+mkdir -p build
+cd build
+  cmake \
+    -DCMAKE_C_FLAGS:STRING="$SLKCFLAGS" \
+    -DCMAKE_CXX_FLAGS:STRING="$SLKCFLAGS" \
+    -DCMAKE_INSTALL_PREFIX=/usr \
+    -DCMAKE_INSTALL_LIBDIR=/usr/lib$LIBDIRSUFFIX \
+    -DCMAKE_INSTALL_MANDIR=/usr/man \
+    -DCMAKE_BUILD_TYPE=Release ..
+  make
+  make install DESTDIR=$PKG
+cd ..
 
 find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
   | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
 
-find $PKG/usr/man -type f -exec gzip -9 {} \;
-for i in $( find $PKG/usr/man -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
-
 mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
-cp -a README COPYING $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a AUTHORS README* NEWS* COPY* $PKG/usr/doc/$PRGNAM-$VERSION
 cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
 
 mkdir -p $PKG/install
diff --git a/libraries/nlopt/nlopt.info b/libraries/nlopt/nlopt.info
index 3c084f48e8..b183a8208b 100644
--- a/libraries/nlopt/nlopt.info
+++ b/libraries/nlopt/nlopt.info
@@ -1,8 +1,8 @@
 PRGNAM="nlopt"
-VERSION="2.4.2"
+VERSION="2.7.1"
 HOMEPAGE="https://nlopt.readthedocs.io/en/latest/"
-DOWNLOAD="https://github.com/stevengj/nlopt/releases/download/nlopt-2.4.2/nlopt-2.4.2.tar.gz"
-MD5SUM="d0b8f139a4acf29b76dbae69ade8ac54"
+DOWNLOAD="https://github.com/stevengj/nlopt/archive/v2.7.1/nlopt-2.7.1.tar.gz"
+MD5SUM="ed1a3000a1c8c248d51df126dfcfaa78"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
 REQUIRES=""