On 2013-10-25 10:49, Magnus Ihse Bursie wrote:
I checked on a newer Ubuntu (13.04). It turns out that pkg-config is
stripping the -L provided by the freetype pkg-config metadata file!
This is apparantly the default behavior of pkg-config, unless
PKG_CONFIG_ALLOW_SYSTEM_LIBS=true is set. The difference between the
older and newer Ubuntus seems to be wether pkg-config considers the
freetype library path to be a system library or not. :-&
That analysis was only partially correct.
Yes, pkg-config is stripping -L, but that shouldn't really be a problem
since gcc should add it again by itself, since it's a system library path.
The real culprit was that I appended $FREETYPE_LIBS to $LDFLAGS instead
of $LIBS. The former is placed before the source code filename when
autoconf tests compiling with the library, the latter after. For gcc 4.5
(which I tested with), this does not matter, but for gcc 4.7 (which is
shipped with Ubuntu 13.04), this matters, so gcc will report a link failure.
PKG_CONFIG_ALLOW_SYSTEM_LIBS was just a red herring.
I'll post a review shortly with a fix for this.
/Magnus
