GNUmakefile CXX flags ignored

[Riccardo Mottola]

Hi,

I'm struggling with a PDFKit's makefile system, especialy the brige 
makefile, which is done as following (.in file), some excerpts, you can 
see the whole file inside GAP.

SUBPROJECT_NAME=xpdfbridge

xpdfbridge_CFLAGS = \
        -I.. \
        -I../$(XPDF_SRC) \
        -I../$(XPDF_SRC)/xpdf \
        -I../$(XPDF_SRC)/splash \
        -I../$(XPDF_SRC)/goo \
        -I../$(XPDF_SRC)/fofi \
        -g

xpdfbridge_CXXFLAGS = -Wno-write-strings

then it defines the source files as:

xpdfbridge_OBJC_FILES = \
        Locking.m       \
        DPS.m           \
        CountingRef.m

xpdfbridge_CC_FILES = \
        XPDFBridge.cc

where are actually OBJC_FILES and CC_FILES defined? I checked GNU make's 
doc without success.

Anyway, what happens is that the CC file is compiled using CLFAGS and 
not the CXXFLAGS.

I am investigating because a broader problem is that PDFKit compiles but 
does't work (it shows blank pages, even if in the correct number) when 
compiled with clang, but works with GCC. I noticed that I had to add

CC=@CC@
CXX=@CXX@

At top so that actually my CXX env. variable was used else, a mix of 
clang++ and g++ was used, adding confusion probably.

Yet first... the question about CC_FILES anf CXX_FLAGS. CXX_FLAGS should 
be used automatically for C++.

Riccardo