Sat Jun 22 10:44:09 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
* rpm/template (Source): New field. (%prep, %build, %install): New sections. (%files): Add %doc FAQ NEWS NOTES README. * rpm/rpmrc (builddir): Removed.
This commit is contained in:
Roland McGrath
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Sat Jun 22 10:44:09 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
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* rpm/template (Source): New field.
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(%prep, %build, %install): New sections.
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(%files): Add %doc FAQ NEWS NOTES README.
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* rpm/rpmrc (builddir): Removed.
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Fri Jun 21 00:27:51 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
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* elf/dl-load.c (_dl_map_object_from_fd): Fix mapping and l_phdr
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60
FAQ
60
FAQ
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@ -31,12 +31,14 @@ please let me know.
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[Q6] ``Do I need some more things to compile GNU C Library?''
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[Q7] ``When I run `nm libc.so|grep " U "' on the produced library
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I still find unresolved symbols? Can this be ok?''
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[Q7] ``When I run `nm -u libc.so' on the produced library I still
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find unresolved symbols? Can this be ok?''
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[Q8] ``I expect GNU libc to be 100% source code compatible with
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the old Linux based GNU libc. Why isn't it like this?''
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[Q9] ``Why does getlogin() always return NULL on my Linux box?''
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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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[Q1] ``What systems does the GNU C Library run on?''
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@ -50,7 +52,8 @@ in the future are:
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*-*-gnu GNU Hurd
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i[3456]86-*-linux Linux-2.0 on Intel
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alpha-*-linux Linux on Alpha
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m68k-*-linux Linux-2.0 on Motorola 680x0
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alpha-*-linux Linux-2.0 on DEC Alpha
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Other Linux platforms are also on the way to be supported but I need
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some success reports first.
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@ -75,14 +78,14 @@ archiver.
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The GNU CC is found like all other GNU packages on
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ftp://prep.ai.mit.edu/pub/gnu
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or better one of the many mirrors.
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or better one of the many mirror sites.
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You always should try to use the latest official release. Older
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versions might not have all the features GNU libc could use.
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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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[Q3] ``When starting make I get only errors messages.
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[Q3] ``When starting `make' I get only errors messages.
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What's wrong?''
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[A3] {UD} You definitely need GNU make to translate GNU libc. No
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@ -112,7 +115,8 @@ you should use the GNU binutils if they provide at least the same
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functionality as your system's tools.
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Always get the newest release of GNU binutils available.
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Older releases are known to have bugs that affect building the GNU C library.
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Older releases are known to have bugs that affect building the GNU C
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Library.
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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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@ -120,6 +124,11 @@ Older releases are known to have bugs that affect building the GNU C library.
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[A6] {UD} Yes, there are some more :-).
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* GNU gettext; the GNU libc is internationalized and partly localized.
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For bringing the messages for the different languages in the needed
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form the tools from the GNU gettext package are necessary. See
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ftp://prep.ai.mit.edu/pub/gnu or better any mirror site.
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* lots of diskspace (for i386-linux this means, e.g., ~70MB).
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You should avoid compiling on a NFS mounted device. This is very
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@ -128,7 +137,7 @@ Older releases are known to have bugs that affect building the GNU C library.
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* plenty of time (approx 1h for i386-linux on i586@133 or 2.5h or
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i486@66).
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If you are interested in some more measurements let me know.
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If you have some more measurements let me know.
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* Some files depend on special tools. E.g., files ending in .gperf
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need a `gperf' program. The GNU version (part of libg++) is known
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@ -139,10 +148,13 @@ Older releases are known to have bugs that affect building the GNU C library.
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+ the header files of the Linux kernel must be available in the
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search path of the CPP as <linux/*.h> and <asm/*.h>.
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* Some files depend on special tools. E.g., files ending in .gperf
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need a `gperf' program. The GNU version (part of libg++) is known
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to work while some vendor versions do not.
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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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[Q7] ``When I run `nm libc.so|grep " U "' on the produced library
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I still find unresolved symbols? Can this be ok?''
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[Q7] ``When I run `nm -u libc.so' on the produced library I still
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find unresolved symbols? Can this be ok?''
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[A7] {UD} Yes, this is ok. There can be several kinds of unresolved
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symbols:
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@ -150,6 +162,8 @@ symbols:
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* magic symbols automatically generated by the linker. Names are
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often like __start_* and __stop_*
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* symbols starting with _dl_* come from the dynamic linker
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* symbols resolved by using libgcc.a
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(__udivdi3, __umoddi3, or similar)
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@ -165,7 +179,7 @@ errors while linking before deciding there is a problem.
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[Q8] ``I expect GNU libc to be 100% source code compatible with
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the old Linux based GNU libc. Why isn't it like this?''
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[A8] {DMT} Not every extension in Linux libc's history was well
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[A8] {DMT,UD} Not every extension in Linux libc's history was well
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thought-out. In fact it had a lot of problems with standards compliance
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and with cleanliness. With the introduction of a new version number these
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errors now can be corrected. Here is a list of the known source code
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@ -190,6 +204,14 @@ incompatibilities:
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corresponds to the third argument of the Linux reboot system call.
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That is, a call of the form reboot(a, b, c) needs to be changed into
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reboot(c).
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Beside this the header <sys/reboot.h> defines the needed constants
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for the argument. These RB_* constants should be used instead of the
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cryptic magic numbers.
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* swapon(): the interface of this function didn't changed, but the
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prototype is in a separate header file <sys/swap.h>. For the additional
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argument of of swapon() you should use the SWAP_* constants from
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<linux/swap.h>, which get defined when <sys/swap.h> is included.
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* errno: If a program uses variable "errno", then it _must_ include header
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file <errno.h>. The old libc often (erroneously) declared this variable
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@ -215,12 +237,26 @@ incompatibilities:
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init_module init_module <sys/module.h>
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syslog ksyslog_ctl <sys/klog.h>
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* lpd: Older versions of lpd depend on an routine called _validuser().
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* lpd: Older versions of lpd depend on a routine called _validuser().
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The library does not provide this function, but instead provides
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__ivaliduser() which has a slightly different interfaces. Simply
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upgrading to a newer lpd should fix this problem (e.g., the BSD 4.4
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upgrading to a newer lpd should fix this problem (e.g., the 4.4BSD
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lpd is known to be working).
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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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[Q9] ``Why does getlogin() always return NULL on my Linux box?''
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[A9] {UD} The GNU C library has a format for the UTMP and WTMP file
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which differs from what your system currently has. It was extended to
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fulfill the needs of the next years when IPv6 is introduced. So the
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record size is different, fields might have a different position and
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so reading the files written by functions from the one library cannot
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be read by functions from the other library. Sorry, but this is what
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a major release is for. It's better to have a cut now than having no
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means to support the new techniques later.
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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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17
PROJECTS
17
PROJECTS
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Open jobs for finishing GNU libc:
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---------------------------------
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Status: May 1996
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Status: June 1996
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If you have time and talent to take over any of the jobs below please
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contact <bug-glibc@prep.ai.mit.edu>
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@ -63,6 +63,8 @@ contact <bug-glibc@prep.ai.mit.edu>
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The libm is in fact fdlibm (not the same as in Linux libc).
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**** Partly done.
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[ 7] If you enjoy assembler programming (as I do --drepper :-) you might
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be interested in writing optimized versions for some functions.
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@ -80,6 +82,8 @@ contact <bug-glibc@prep.ai.mit.edu>
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[ 8] Write nftw() function. Perhaps it might be good to reimplement the
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ftw() function as well to share most of the code.
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**** Almost done!
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[ 9] Write AVL-tree based tsearch() et.al. functions. Currently only
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a very simple algorithm is used.
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@ -96,3 +100,14 @@ contact <bug-glibc@prep.ai.mit.edu>
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b) is without mmap support at least as fast as the current
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implementation
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c) will be extended with the current hooks and additional functions
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[12] Implement shadow password handling. There exist some but I don't
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know of any falling under LGPL and where the author is willing to
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contribute it to the FSF.
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[13] Write access function for group, ether, shadow, rpc, netmasks,
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bootparams, netgroup, publickey, automount, aliases databases.
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The functions should be embedded in the nss scheme. This is not
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hard and not all services must be supported at once.
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16
rpm/template
16
rpm/template
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@ -4,5 +4,21 @@ Group: Development/Libraries/Libc
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Version: @VERSION@
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Release: 1
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Copyright: LGPL, GPL
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Source: glibc-@VERSION@.tar.gz
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%prep
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%setup
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%build
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configure --prefix=/usr
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cat >configparms <<EOF
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slibdir=/lib
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sysconfdir=/etc
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EOF
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make
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%install
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make install
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%files
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%doc FAQ NEWS NOTES README
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