File: configure

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r-cran-av 0.5.1+dfsg-1
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#!/usr/bin/env bash
# Anticonf (tm) script by Jeroen Ooms (2020)
# This script will query 'pkg-config' for the required cflags and ldflags.
# If pkg-config is unavailable or does not find the library, try setting
# INCLUDE_DIR and LIB_DIR manually via e.g:
# R CMD INSTALL --configure-vars='INCLUDE_DIR=/.../include LIB_DIR=/.../lib'

# Library settings
PKG_CONFIG_NAME="libavfilter"
PKG_DEB_NAME="libavfilter-dev"
PKG_RPM_NAME="ffmpeg-devel (https://rpmfusion.org)"
PKG_CSW_NAME="ffmpeg_dev"
PKG_BREW_NAME="ffmpeg"
PKG_TEST_HEADER="<libavfilter/version.h>"
PKG_LIBS="-lavfilter"

# Check if FFmpeg is too old
pkg-config ${PKG_CONFIG_NAME} --max-version=5.99 2>/dev/null
if [ $? -eq 0 ]; then
  echo "ERROR: Your version of FFmpeg is too old! Need at least FFmpeg (>= 3.2)" 1>&2
  if [ "$(lsb_release -c 2>/dev/null | grep xenial)" ]; then
    echo "On Ubuntu Trusty/Xenial use our PPA: " 2>/dev/null
    echo "  sudo add-apt-repository -y ppa:cran/ffmpeg-3" 2>/dev/null
    echo "  sudo apt-get update" 2>/dev/null
    echo "  sudo apt-get dist-upgrade" 2>/dev/null
  fi
  exit 1
fi

# FFMPEG 3 and 4 include libavfilter 6.0
pkg-config ${PKG_CONFIG_NAME} --atleast-version=6 2>/dev/null
if [ $? -eq 0 ]; then
  PKGCONFIG_CFLAGS=$(pkg-config --cflags --silence-errors ${PKG_CONFIG_NAME})
  PKGCONFIG_LIBS=$(pkg-config --libs ${PKG_CONFIG_NAME})
fi

# Check for custom locations
if [ "$INCLUDE_DIR" ] || [ "$LIB_DIR" ]; then
  echo "Found INCLUDE_DIR and/or LIB_DIR!"
  PKG_CFLAGS="-I$INCLUDE_DIR $PKG_CFLAGS"
  PKG_LIBS="-L$LIB_DIR $PKG_LIBS"
elif [ "$PKGCONFIG_CFLAGS" ] || [ "$PKGCONFIG_LIBS" ]; then
  echo "Found pkg-config cflags and libs!"
  PKG_CFLAGS=${PKGCONFIG_CFLAGS}
  PKG_LIBS=${PKGCONFIG_LIBS}
elif [[ "$OSTYPE" == "darwin"* ]]; then
  if [ $(command -v brew) ]; then
    BREWDIR=$(brew --prefix)
  else
    curl -sfL "https://autobrew.github.io/scripts/$PKG_BREW_NAME" > autobrew
    source autobrew
  fi
  PKG_CFLAGS="-I$BREWDIR/opt/$PKG_BREW_NAME/include"
  PKG_LIBS="-L$BREWDIR/opt/$PKG_BREW_NAME/lib $PKG_LIBS"
fi

# For debugging
echo "Using PKG_CFLAGS=$PKG_CFLAGS"
echo "Using PKG_LIBS=$PKG_LIBS"

# Find compiler
CXX=$(${R_HOME}/bin/R CMD config CXX)
CXXFLAGS=$(${R_HOME}/bin/R CMD config CXXFLAGS)
CPPFLAGS=$(${R_HOME}/bin/R CMD config CPPFLAGS)

# Test for ffmpeg
echo "#include $PKG_TEST_HEADER" | ${CXX} -E ${CPPFLAGS} ${PKG_CFLAGS} ${CXXFLAGS} -xc++ - >/dev/null 2>configure.log
if [ $? -ne 0 ]; then
  echo "-----------------------------[ ANTICONF ]----------------------------------"
  echo "Configuration failed to find the $PKG_CONFIG_NAME library. Try installing:"
  echo " * deb: $PKG_DEB_NAME (Debian, Ubuntu 18.04 and up)"
  echo " * rpm: $PKG_RPM_NAME (Fedora, CentOS, RHEL)"
  echo " * csw: $PKG_CSW_NAME (Solaris)"
  echo " * brew: $PKG_BREW_NAME (MacOS)"
  echo "For Ubuntu Trusty (14.04) and Xenial (16.04) use this PPA:"
  echo "   sudo add-apt-repository -y ppa:cran/ffmpeg-3"
  echo "   sudo apt-get update"
  echo "   sudo apt-get install -y $PKG_DEB_NAME"
  echo "If $PKG_CONFIG_NAME is already installed, check that 'pkg-config' is in your"
  echo "PATH and PKG_CONFIG_PATH contains a $PKG_CONFIG_NAME.pc file. If pkg-config"
  echo "is unavailable you can set INCLUDE_DIR and LIB_DIR manually via:"
  echo "R CMD INSTALL --configure-vars='INCLUDE_DIR=... LIB_DIR=...'"
  echo "---------------------------[ ERROR MESSAGE ]--------------------------------"
  cat configure.log
  echo "----------------------------------------------------------------------------"
  exit 1
fi

# Write to Makevars
sed -e "s|@cflags@|$PKG_CFLAGS|" -e "s|@libs@|$PKG_LIBS|" src/Makevars.in > src/Makevars

# Success
exit 0