Ordering problem with --with-includes

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Peter Eisentraut <peter_e(at)gmx(dot)net>
Cc: pgsql-hackers(at)postgreSQL(dot)org
Subject: Ordering problem with --with-includes
Date: 2001-02-19 23:36:03
Message-ID: 3952.982625763@sss.pgh.pa.us
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I find that if one specifies, say,

configure --with-includes=/usr/local/include

one gets compiler commands like

cc -Ae -g +z -I/usr/local/include -I../../../src/include -I../../../src/interfaces/libpq -c -o pgtcl.o pgtcl.c

because the -I commands are added to CPPFLAGS which appears before any
-I commands the makefiles themselves add. This strikes me as uncool.
For example, it will be impossible to compile Postgres if there are
headers from an old version lurking in /usr/local/include, because those
will be read instead of the ones from our source tree. How hard would
it be to make the --with-includes -I directives appear after our own?

The same problem arises for --with-libs, btw.

regards, tom lane

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