From cb0032cdcfd252317e3302a43b725706b1f900e0 Mon Sep 17 00:00:00 2001 From: Bruce Momjian Date: Thu, 9 Dec 1999 15:56:16 +0000 Subject: [PATCH] Update for QNX from Kardos, Dr. Andrea --- doc/README.qnx4 | 154 +++++++++++++++++++++++++++++ src/backend/utils/adt/arrayfuncs.c | 4 +- src/backend/utils/adt/chunk.c | 6 +- 3 files changed, 162 insertions(+), 2 deletions(-) create mode 100644 doc/README.qnx4 diff --git a/doc/README.qnx4 b/doc/README.qnx4 new file mode 100644 index 0000000000..fbc3b25df6 --- /dev/null +++ b/doc/README.qnx4 @@ -0,0 +1,154 @@ +PostgresSQL on QNX 4 +-------------------- + +PosgresSQL 6.5.2 could be ported to QNX 4.25. + +This port is an important step because PostgreSQL is now the only free +relational database with full SQL and ODBC support available for QNX 4. +The only commercial databases available are Empress RDBMS and Velocis +Database Server (not supported for Digital Unix). + +The most expensive topics where the emulation of System V semaphore sets, +shared memory and IPC and of some IEEE floating-point functionality. For +the Watcom compiler spinlocks have been implemented using POSIX semaphores. +A lot of make files had to be changed because $(LD) doesn't support the +-r option on QNX 4. + +It is recomended to use the GNU C compiler instead of the Watcom compiler +because the Watcom compiler doesn't support a int8 datatype (long or +long long int) and it does not have a C++ frontend. +It could be managed to build postgres using the Watcom compiler but it crashes +quite early. These problems probably could be solved. The only advantage would +be support of Tk and pgaccess. For the Watcom compiler some more modifications +have to be made which are not described here. + +QNX 4 does not offer native support of shared libraries. Therefore the related +functionality cannot be used. Shared library support could probably be +implemented. + +QNX 4 does not support UNIX domain sockets. Connections can only be made +with TCP/IP sockets. Therefore postmaster must always be started with the +-i option. Furthermore it would be useful to set the PGHOST variable. + +Prerequisites: +-------------- + +The following prerequisites have been used: + +QNX 4.25 +GNU make +flex-2.5.4a.tar.gz (flex) +egcs111-qnx4-r20.tar[.gz] (GNU C) +perl 5.004_04 +tcl8.0.3.tar.Z (Tcl) + +flex can be built without any problems using the Watcom or GNU C compilers. + +GNU C can be installed by +/etc/install -u egcs111-qnx4-r20.tar[.gz] + +Although Tcl can be built after some slight code changes using the Watcom +compiler, the GNU C compiler should be used instead. Otherwise it would be +impossible to link postgres built with GNU C together with libtcl8.0.a built +with the Watcom compiler. +To make unix/tclUnixTest.c compilable uncomment +#include +in it or +touch /usr/include/sys/resource.h +In unix/Makefile.in replace + ( echo cd $(TOP_DIR)/tests\; source all ) | ./tcltest +by + ( echo cd ../tests\; source all ) | ./tcltest +After that Tcl can be built and tested as stated in README. + +Tk cannot be built with GNU C due to the lack of a stack version of the +X11 library. With the Watcom compiler Tk could be built but this is not useful +because of the link problems mentioned above. + +Therefore the Tk interface and the pgaccess tool cannot be supported for a GNU C +version of PostgreSQL on QNX 4. + +PostgreSQL: +----------- + +On QNX 4 some headers are not in the directories expected. To avoid +modifications of the code the following links should be made: + +ln -s /usr/local/bin/perl /usr/local/bin/perl5 +ln -s /usr/include/errno.h /usr/include/sys/errno.h +ln -s /usr/include/ioctl.h /usr/include/sys/ioctl.h + +The sources can be unpacked by +cd /usr/src +gunzip -c postgresql-6.5.2.tar.gz | tar xvf - +mv postgresql-6.5.2 pgsql +gunzip -c postgresql-6.5.2-qnx4-gcc-patch.tar.gz | tar xvf - + +Furthermore the header files ipc.h, sem.h and shm.h must be installed. +They are not available on QNX 4. stl_alloc.h must be modified +(extern "C++" { ... }). +su +cd /usr +gunzip -c qnx4-gcc-header-patch.tar.gz | tar xvf - +exit +Possibly the file +/usr/local/lib/gcc-lib/i386-pc-qnx4/egcs-2.91.60/include/g++/stl_alloc.h +must be copied to the right path in your environment. +If this ist the case the path has to be adopted in src/Makefile.custom too +(CXXFLAGS). + +If all prerequisites are available postgres can be built and installed by +cd pgsql/src +./configure --with-tcl --with-perl --with-x +gmake all > make.log 2>&1 +gmake install > make.install.log 2>&1 +su +cd interfaces/perl5 +gmake install +exit + +All other steps can be carried out as stated in the INSTALL file. + +Regression tests: +----------------- + +The majority of regression tests succeeded. The following tests failed: + +int2, int4: +Error message "Result too large" instead of "Numerical result out of range". +Can be ignored. + +int8, float4: +Exponent expression "e+nnn" instead of "e+nn". Can be ignored. + +float8: +Exponent expression "e+nnn" instead of "e+nn" and some slight deviation +in the last digit. +Can be ignored. + +geometry: +Some slight deviation in the last digit and "0" instead of "-0". +Can be ignored. + +datetime, abstime, tinterval, horology: +Differences for years outside the normal Unix range, e.g. 1968 +instead of 2105 +Can be ignored. + +create_function_2, triggers, misc, plpgsql: +Error messages due to the lack of shared library support. + +rules: +Subject of further investigation. + +numeric, numeric_big: +ERROR: Cannot create unique index. Table contains non-unique values +Subject of further investigation. + +The reached state of this port should be sufficient for lot of applications. + +Have fun! + +Andreas Kardos +kardos@repas-aeg.de +1999-12-09 diff --git a/src/backend/utils/adt/arrayfuncs.c b/src/backend/utils/adt/arrayfuncs.c index b8b023575d..9f04ca4822 100644 --- a/src/backend/utils/adt/arrayfuncs.c +++ b/src/backend/utils/adt/arrayfuncs.c @@ -7,7 +7,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/adt/arrayfuncs.c,v 1.49 1999/11/22 17:56:29 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/adt/arrayfuncs.c,v 1.50 1999/12/09 15:56:16 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -1832,7 +1832,9 @@ _LOtransfer(char **destfd, int isDestLO) { #define MAX_READ (512 * 1024) +#if !defined(min) #define min(a, b) (a < b ? a : b) +#endif struct varlena *v = NULL; int tmp, inc, diff --git a/src/backend/utils/adt/chunk.c b/src/backend/utils/adt/chunk.c index d64ed0cf02..78262d0652 100644 --- a/src/backend/utils/adt/chunk.c +++ b/src/backend/utils/adt/chunk.c @@ -6,7 +6,7 @@ * * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/adt/Attic/chunk.c,v 1.23 1999/07/17 20:17:54 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/adt/Attic/chunk.c,v 1.24 1999/12/09 15:56:16 momjian Exp $ * *------------------------------------------------------------------------- */ @@ -28,8 +28,12 @@ #define MANY 10000 #define MAXPAT 20 #define quot_ceil(x,y) (((x)+(y)-1)/(y)) +#if !defined(min) #define min(x,y) (((x) < (y))? (x) : (y)) +#endif +#if !defined(max) #define max(x,y) (((x) > (y))? (x) : (y)) +#endif static CHUNK_INFO cInfo;