Try to install the recent upstream GMTSAR

Author: Alexey Pechnikov

pygmtsar/pygmtsar/data/google_colab.sh

@@ -13,12 +13,13 @@ if [ "$count" -eq 0 ]; then
     update-alternatives --config gcc
     gcc --version | head -n 1
     git config --global advice.detachedHead false
-    cd /usr/local && git clone -q --branch master https://github.com/gmtsar/gmtsar GMTSAR
+    # limit clone depth when git checkout disabled
+    cd /usr/local && git clone --depth=1 -q --branch master https://github.com/gmtsar/gmtsar GMTSAR
     # revert recent broken commit
-    cd /usr/local/GMTSAR && git checkout e98ebc0f4164939a4780b1534bac186924d7c998 > /dev/null
+    #cd /usr/local/GMTSAR && git checkout e98ebc0f4164939a4780b1534bac186924d7c998 > /dev/null
     cd /usr/local/GMTSAR && autoconf > /dev/null
     cd /usr/local/GMTSAR && ./configure --with-orbits-dir=/tmp > /dev/null
-    cd /usr/local/GMTSAR && make 1>/dev/null 2>/dev/null
+    cd /usr/local/GMTSAR && make -j$(nproc) 1>/dev/null 2>/dev/null
     cd /usr/local/GMTSAR && make install >/dev/null
     # test one GMTSAR binary
     /usr/local/GMTSAR/bin/make_s1a_tops 2>&1 | head -n 2