On Mon, 16 Apr 2012, Miles Bader wrote:
I notice that FreeBSD (etc) put a lot of optionally installed
("/usr/ports") software in /usr/local, but the system compiler's
search-paths on these machines by default _don't_ include
/usr/local...
So my autoconf'd project doesn't find various libraries, even if the
user thought he had installed them.
What's the usual way to handle this issue...?
1) Add /usr/local to paths by default
(e.g. CPPFLAGS+=-I/usr/local/include, LDFLAGS+=-L/usr/local/lib)
The approach I use is to create a /usr/local/share/config.site file
with this content:
#=========================================
# config.site for configure
#
# Change some defaults.
test "$prefix" = NONE && prefix=/usr/local
CFLAGS_DEFAULT='-O2'
CXXFLAGS_DEFAULT='-O'
CPPFLAGS_DEFAULT="-I/usr/local/include"
LDFLAGS_DEFAULT="-L/usr/local/lib"
LIBS_DEFAULT=
set -a # Auto-export environment variables
if test "${ac_env_CC_set}" != set
then
CC="$CC_DEFAULT"
fi
if test "${ac_env_CXX_set}" != set
then
CXX="$CXX_DEFAULT"
fi
if test "${ac_env_CFLAGS_set}" != set
then
CFLAGS="$CFLAGS_DEFAULT"
fi
if test "${ac_env_CXXFLAGS_set}" != set
then
CXXFLAGS="$CXXFLAGS_DEFAULT"
fi
if test "${ac_env_CPPFLAGS_set}" != set
then
CPPFLAGS="$CPPFLAGS_DEFAULT"
fi
if test "${ac_env_LDFLAGS_set}" = set
then
LDFLAGS="$LDFLAGS $LDFLAGS_DEFAULT"
else
LDFLAGS="$LDFLAGS_DEFAULT"
fi
set +a # Stop auto-exporting variables
echo "CC = \"$CC\""
echo "CXX = \"$CXX\""
echo "CFLAGS = \"$CFLAGS\""
echo "CXXFLAGS = \"$CXXFLAGS\""
echo "CPPFLAGS = \"$CPPFLAGS\""
echo "LDFLAGS = \"$LDFLAGS\""
#=========================================
--
Bob Friesenhahn
bfriesen@xxxxxxxxxxxxxxxxxxx, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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