Improve osx builds (#49)

* Improve osx builds

* Fix line ending

* Try newer travis image for build speed&fix osx lib

* Retry

.travis.yml

@@ -7,6 +7,7 @@ jobs:
   - dist: focal
     os: linux
   - os: osx
+    osx_image: xcode13.1
   - os: windows
 language: c
 compiler: gcc
@@ -23,8 +24,7 @@ before_install:
   - if [[ $BUILD == "True" ]]; then
       chmod +x travis_setup.sh; 
       ./travis_setup.sh;
-      export HDF5_INSTALL_DIR=$TRAVIS_BUILD_DIR/cbuild;
-      mkdir cmake
+      mkdir cmake;
     else
       echo "no build.";
     fi
@@ -39,6 +39,13 @@ before_install:
       echo "unknown OS ('$TRAVIS_OS_NAME')" >&2; exit 1;
     fi
 
+  - if [[ $BUILD == "True" && $TRAVIS_OS_NAME == "osx" ]]; then
+      export HDF5_INSTALL_DIR="/usr/local/opt/[email protected]/";
+    else
+      export HDF5_INSTALL_DIR=$TRAVIS_BUILD_DIR/cbuild;
+    fi
+  - echo "HDF5_INSTALL_DIR '$HDF5_INSTALL_DIR'";
+
   - export LD_LIBRARY_PATH=$HDF5_INSTALL_DIR/lib:$LD_LIBRARY_PATH 
   - export DYLD_LIBRARY_PATH=$HDF5_INSTALL_DIR/lib:$DYLD_LIBRARY_PATH
   - export PATH=$HDF5_INSTALL_DIR/lib:$PATH

travis_setup.sh

@@ -1,9 +1,12 @@
 #!/bin/bash
 
 if [ "$TRAVIS_OS_NAME" == "osx" ]; then # use homebrew version
+  echo "Updating brew"
   brew update
-  brew install hdf5
+  echo "Installing hdf5"
+  brew install [email protected]
   echo "brew install finished"
+  export HDF5_INSTALL_DIR="/usr/local/opt/[email protected]/"
 else # install from source
   wget --no-check-certificate "https://support.hdfgroup.org/ftp/HDF5/releases/hdf5-1.10/hdf5-1.10.9/src/hdf5-1.10.9.tar.gz"
   tar -xzf "hdf5-1.10.9.tar.gz"