substitute several more values for .pc files:
+ s,@LIBXML2_CFLAGS@,,; \
+ s,@ICONV_CFLAGS@,,; \
+ s,@PACKAGE@,${PKGDIST},; \
+ s,@PKGCONFIG_REQUIRES@,xx,; \
+ s,@PKGCONFIG_REQUIRES_PRIVATELY@,xx,; \
+ s,@ERRORDBDIR@,${X11LIBDIR},; \
+ s,@EXPAT_CFLAGS@,,; \
+ s,@FREETYPE_CFLAGS@,-I${X11ROOTDIR}/include/freetype2 -I${X11ROOTDIR}/include,; \
+ s,@SDK_REQUIRED_MODULES@,xproto >= 7.0.17 randrproto >= 1.2.99.3 renderproto >= 0.11 xextproto >= 7.1.99 inputproto >= 1.9.99.902 kbproto >= 1.0.3 fontsproto," \
375467851c