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superfluous test in AC_CHECK_HEADERS?
From: |
Frederik Fouvry |
Subject: |
superfluous test in AC_CHECK_HEADERS? |
Date: |
Thu, 12 Aug 2004 21:35:34 +0200 (CEST) |
Hi,
I'm using
AC_CHECK_HEADERS([ecl.h])
in configure.ac, and that gives the following in the log file
(autoconf 2.57):
configure:5067: checking ecl.h usability
configure:5080: gcc -c -g -O2 -I/proj/contrib/lkb/latest/include
-I/proj/contrib/lib/ecl/h conftest.c >&5
configure:5083: $? = 0
configure:5086: test -s conftest.o
configure:5089: $? = 0
configure:5099: result: yes
configure:5103: checking ecl.h presence
configure:5114: gcc -E -I/proj/contrib/lkb/latest/include
-I/proj/contrib/lib/ecl/h conftest.c
configure:5120: $? = 0
configure:5139: result: yes
configure:5175: checking for ecl.h
configure:5182: result: yes
It first tests whether it can compile with the header file, and
then tests if the file exists or not. Is the second test not
subsumed by the first one (if that one is successful)?
Thanks,
Frederik Fouvry
- superfluous test in AC_CHECK_HEADERS?,
Frederik Fouvry <=