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#!/bin/bash
has_ldconfig() {
hash ldconfig 2>/dev/null
}
has_system_lib() {
local regex="lib$1.+(so|dylib)"
# Add /sbin to path as ldconfig is located there on some systems - e.g. Debian
# (and it still can be used by unprivileged users):
PATH="$PATH:/sbin"
export PATH
# Try using ldconfig on linux systems
if $(has_ldconfig); then
for _ in $(ldconfig -p 2>/dev/null | grep -E "$regex"); do
return 0
done
fi
# Try just checking common library locations
for dir in /lib /usr/lib /usr/local/lib /opt/local/lib /usr/lib/x86_64-linux-gnu /usr/lib/i386-linux-gnu; do
test -d $dir && ls $dir | grep -E "$regex" && return 0
done
return 1
}
has_freetype() {
pkg-config cairo --cflags-only-I | grep freetype2
}
has_pkgconfig_lib() {
pkg-config --exists "$1"
}
case "$1" in
gif)
has_system_lib "gif" > /dev/null
result=$?
;;
jpeg)
has_system_lib "jpeg" > /dev/null
result=$?
;;
pango)
has_pkgconfig_lib "pango" > /dev/null
result=$?
;;
freetype)
has_freetype > /dev/null
result=$?
;;
*)
>&2 echo "Unknown library: $1"
exit 1
esac
if test $result -eq 0; then
echo "true"
else
echo "false"
fi