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#!/bin/bash
# Anticonf (tm) script by Jeroen Ooms (2017)
# 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="libwebp"
PKG_DEB_NAME="libwebp-dev"
PKG_RPM_NAME="libwebp-devel"
PKG_CSW_NAME="libwebp_dev"
PKG_BREW_NAME="webp"
PKG_TEST_HEADER="<webp/encode.h>"
PKG_LIBS="-lwebp"
PKG_CFLAGS=""
# Use pkg-config if available
if [ $(command -v pkg-config) ]; then
PKGCONFIG_CFLAGS=$(pkg-config --cflags --silence-errors ${PKG_CONFIG_NAME})
PKGCONFIG_LIBS=$(pkg-config --libs ${PKG_CONFIG_NAME})
fi
# Note that cflags may be empty in case of success
if [ "$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://jeroen.github.io/autobrew/$PKG_BREW_NAME" > autobrew
source autobrew
fi
PKG_CFLAGS="-I$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=$PKG_LIBS"
# Find compiler
CC=$(${R_HOME}/bin/R CMD config CC)
CFLAGS=$(${R_HOME}/bin/R CMD config CFLAGS)
CPPFLAGS=$(${R_HOME}/bin/R CMD config CPPFLAGS)
# Test configuration
echo "#include $PKG_TEST_HEADER" | ${CC} ${CPPFLAGS} ${PKG_CFLAGS} ${CFLAGS} -E -xc - >/dev/null 2>&1 || R_CONFIG_ERROR=1;
# Customize the error
if [ $R_CONFIG_ERROR ]; then
echo "------------------------- ANTICONF ERROR ---------------------------"
echo "Configuration failed because $PKG_CONFIG_NAME was not found. Try installing:"
echo " * deb: $PKG_DEB_NAME (Debian, Ubuntu, etc)"
echo " * rpm: $PKG_RPM_NAME (Fedora, EPEL)"
echo " * csw: $PKG_CSW_NAME (Solaris)"
echo " * brew: $PKG_BREW_NAME (OSX)"
echo "If $PKG_CONFIG_NAME is already installed, check that 'pkg-config' is in your"
echo "PATH and PKG_CONFIG_PATH contains a $PKG_CONFIG_NAME.pc file. If pkg-config"
echo "is unavailable you can set INCLUDE_DIR and LIB_DIR manually via:"
echo "R CMD INSTALL --configure-vars='INCLUDE_DIR=... LIB_DIR=...'"
echo "--------------------------------------------------------------------"
exit 1;
fi
# Write to Makevars
sed -e "s|@cflags@|$PKG_CFLAGS|" -e "s|@libs@|$PKG_LIBS|" src/Makevars.in > src/Makevars
# Success
exit 0
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