Building elinks-0.11.2 on my OS X machine, there are symtoms of some
flag mishandling. I set some -I and -L flags in CPPFLAGS and LDFLAGS
respectively, as per the standard meaning of those variables, which is
reflected in './configure --help':
CFLAGS C compiler flags
LDFLAGS linker flags, e.g. -L if you have libraries in a
nonstandard directory
CPPFLAGSC/C++ preprocessor flags, e.g. -I if you have
headers in a nonstandard directory
At the end of ./configure on my OS X machine, I see:
Compiler options (CFLAGS) ... -g -O2 -Wall -fno-strict-aliasing
-I/sw/include -I/sw/include
Linker options (LIBS) ... -L/sw/lib -lssl -lcrypto -ldl -lz -lbz2
-lidn -lexpat -liconv
That seems strange, because Makefile.config has:
CFLAGS = -g -O2 -Wall -fno-strict-aliasing
CPPFLAGS = -I/sw/include -I/sw/include
LDFLAGS = -L/sw/lib -rdynamic
LIBS = -L/sw/lib -lssl -lcrypto -ldl -lz -lbz2 -lidn -lexpat -liconv
Which sounds correct. The bug is in how the data from configure is
labeled: configure.in emits CFLAGS+CPPFLAGS but calls it CFLAGS:
ALL_CFLAGS="$CFLAGS $CPPFLAGS"
EL_LOG_CONFIG(ALL_CFLAGS, [Compiler options (CFLAGS)], [])
Because CPPFLAGS and CFLAGS have different meanings and are used
differently internally (see below in this email and also see the
comments in configure.in), better to display each separately:
EL_LOG_CONFIG(CPPFLAGS, [Compiler options (CPPFLAGS)], [])
EL_LOG_CONFIG(CFLAGS, [Compiler options (CFLAGS)], [])
Then compiling also fails:
[CC] src/bookmarks/backend/xbel.o
xbel.c:14:19: expat.h: No such file or directory
even though I have /sw/include/expat.h. Why isn't the -I flag in
CPPFLAGS being passed? It's a bug in Makefile.config.in:
COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CFLAGS) $(CFLAGS)
CPPFLAGS, a set of flags specifically designed to be passed to the
compiler and lumped together with CFLAGS in configure.in, isn't being
passed to the compiler along with CFLAGS. A more standard automake
incantation would be:
COMPILE = $(CC) $(DEFS) $(INCLUDES) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
dan
--
Daniel Macks
[EMAIL PROTECTED]
http://www.netspace.org/~dmacks
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