[Gnash-dev] Configure doesn't friendly-warn about missing curl libs

[TJ]

Building gnash in a clean chroot environment I found that configure
didn't provide a friendly warning of missing -dev headers for curl and
therefore the compilation failed with:

libtool: compile:  g++ -DHAVE_CONFIG_H -I. -I.. 
-DPLUGINSDIR=\"/usr/local/lib/gnash/plugins\" -DSYSCONFDIR=\"/usr/local/etc\" 
-I../libltdl -pthread -I/usr/include/libpng12 -I/usr/include/glib-2.0 
-I/usr/lib/glib-2.0/include -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include 
-pthread -I/usr/include/gstreamer-0.10 -I/usr/include/glib-2.0 
-I/usr/lib/glib-2.0/include -I/usr/include/libxml2 -g -O2 -W -Wall -Wcast-align 
-Wcast-qual -Wpointer-arith -Wreturn-type -Wnon-virtual-dtor -Wunused 
-fvisibility-inlines-hidden -MT libgnashbase_la-curl_adapter.lo -MD -MP -MF 
.deps/libgnashbase_la-curl_adapter.Tpo -c curl_adapter.cpp  -fPIC -DPIC -o 
.libs/libgnashbase_la-curl_adapter.o
curl_adapter.cpp:74:23: error: curl/curl.h: No such file or directory

As this is Ubuntu I solved that with:

sudo apt-get install libcurl4-gnutls-dev

I wonder if there should be one of those friendly ERRORs about missing
-dev headers/packages?