diff --git a/buildscripts/build_all.sh b/buildscripts/build_all.sh
index 23c1bdfbd..dd3e71f7f 100755
--- a/buildscripts/build_all.sh
+++ b/buildscripts/build_all.sh
@@ -58,12 +58,15 @@ case $OS in
             if [ "$ARCH" = "x86_64" ]; then
                 COMPILER="Intel"
             else
-                COMPILER="GNU"
+                COMPILER="GNU-Linux"
             fi
         fi
         ;; 
     MacOSX) 
-        COMPILER="GNU"
+        COMPILER="GNU-Mac"
+        export MACOSX_DEPLOYMENT_TARGET=13 
+        export LDFLAGS="-Wl,-no_compact_unwind"
+        echo "Building for Mac assumes using Homebrew gfortran-13, gcc-13, and g++13. Install these first if necessary."
         ;;
     *)
         echo "Swiftest is currently not configured to build for platform ${OS}-${ARCH}"
@@ -71,12 +74,8 @@ case $OS in
         ;;
 esac
 
-/bin/bash -lic "${SCRIPT_DIR}/fetch_dependencies.sh"
-if [ "$COMPILER"="GNU" ]; then
-    /bin/bash -lic "${SCRIPT_DIR}/make_build_environment.sh"
-    conda activate swiftest-build-env 
-fi
-/bin/bash -lic "${SCRIPT_DIR}/build_dependencies.sh $COMPILER"
-/bin/bash -lic "${SCRIPT_DIR}/build_swiftest.sh $COMPILER"
+${SCRIPT_DIR}/fetch_dependencies.sh && \
+${SCRIPT_DIR}/build_dependencies.sh $COMPILER && \
+${SCRIPT_DIR}/build_swiftest.sh $COMPILER
 
 
diff --git a/buildscripts/build_dependencies.sh b/buildscripts/build_dependencies.sh
index b06b1e8a8..e7c3fcafa 100755
--- a/buildscripts/build_dependencies.sh
+++ b/buildscripts/build_dependencies.sh
@@ -38,11 +38,16 @@ case $COMPILER in
         fi
         export F77="${FC}"
         ;;
-    GNU)
+    GNU-Linux)
         export FC=$(command -v gfortran)
         export CC=$(command -v gcc)
         export CXX=$(command -v g++)
         ;;
+    GNU-Mac)
+        export FC=$HOMEBREW_PREFIX/bin/gfortran-13
+        export CC=$HOMEBREW_PREFIX/bin/gcc-13
+        export CXX=$HOMEBREW_PREFIX/bin/g++-13
+        ;;
     *)
         echo "Unknown compiler type: ${COMPILER}"
         echo $USTMT
@@ -61,11 +66,12 @@ export HDF5_LIBDIR="${HDF5_ROOT}/lib"
 export HDF5_INCLUDE_DIR="${HDF5_ROOT}/include"
 export HDF5_PLUGIN_PATH="${HDF5_LIBDIR}/plugin"
 
-export LDFLAGS="-L${INSTALL_DIR}/lib"
+export LDFLAGS="${LDFLAGS} -L${INSTALL_DIR}/lib"
 export CPATH="${INSTALL_DIR}/include"
 export CFLAGS="-fPIC"
 
 cd zlib-1.2.13 
+make distclean
 ./configure --prefix=${INSTALL_DIR} --static 
 make 
 make install
@@ -77,6 +83,7 @@ cd ../hdf5-1.14.1-2
               --disable-cxx \
               --prefix=${INSTALL_DIR} \
               --with-zlib=${INSTALL_DIR} 
+make distclean
 make
 make install
 
@@ -85,6 +92,7 @@ cd ../netcdf-c-4.9.2
             --disable-dap \
             --disable-byterange \
             --prefix=${INSTALL_DIR} 
+make distclean
 make 
 make check 
 make install
@@ -100,6 +108,7 @@ fi
 export LIBS="$(${INSTALL_DIR}/bin/nc-config --libs)"
 cd ../netcdf-fortran-4.6.1
 ./configure --disable-shared --with-pic --prefix=${NFDIR}  
+make distclean
 make 
 make check 
 make install
diff --git a/buildscripts/build_swiftest.sh b/buildscripts/build_swiftest.sh
index b7973895f..8eb834f05 100755
--- a/buildscripts/build_swiftest.sh
+++ b/buildscripts/build_swiftest.sh
@@ -35,11 +35,16 @@ case $COMPILER in
         fi
         export F77="${FC}"
         ;;
-    GNU)
+    GNU-Linux)
         export FC=$(command -v gfortran)
         export CC=$(command -v gcc)
         export CXX=$(command -v g++)
         ;;
+    GNU-Mac)
+        export FC=$HOMEBREW_PREFIX/bin/gfortran-13
+        export CC=$HOMEBREW_PREFIX/bin/gcc-13
+        export CXX=$HOMEBREW_PREFIX/bin/g++-13
+        ;;
     *)
         echo "Unknown compiler type: ${COMPILER}"
         echo $USTMT
@@ -53,7 +58,7 @@ export CPATH=$DEPDIR/include
 export NETCDF_FORTRAN_HOME=$DEPDIR
 export LD_LIBRARY_PATH="${DEPDIR}/lib:${LD_LIBRARY_PATH}"
 export LIBS=$(${DEPDIR}/bin/nf-config --all)
-export LDFLAGS="-L${DEPDIR}/lib"
+export LDFLAGS="${LDFLAGS} -L${DEPDIR}/lib"
 export CFLAGS="-fPIC"
 export CMAKE_ARGS="-DBUILD_SHARED_LIBS=OFF"
 
diff --git a/buildscripts/fetch_dependencies.sh b/buildscripts/fetch_dependencies.sh
index 24337c095..dc31aff66 100755
--- a/buildscripts/fetch_dependencies.sh
+++ b/buildscripts/fetch_dependencies.sh
@@ -20,5 +20,3 @@ wget -qO- https://www.zlib.net/zlib-1.2.13.tar.gz | tar xvz
 wget -qO- https://support.hdfgroup.org/ftp/HDF5/releases/hdf5-1.14/hdf5-1.14.1/src/hdf5-1.14.1-2.tar.gz | tar xvz 
 wget -qO- https://github.com/Unidata/netcdf-c/archive/refs/tags/v4.9.2.tar.gz | tar xvz 
 wget -qO- https://github.com/Unidata/netcdf-fortran/archive/refs/tags/v4.6.1.tar.gz | tar xvz 
-
-echo "Files downloaded to ${BUILD_DIR}"
\ No newline at end of file