Re: HDF5 and timezone
On Jan 23 15:17, Mark Hadfield wrote: Building HDF5 (either the recently released RC1 or the previous beta 5) under Cygwin fails with gcc -DHAVE_CONFIG_H -I. -DNDEBUG -UH5_DEBUG_API -std=c99 -pedantic -Wall -Wextra -Wundef -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Wconversion -Wsign-compare -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls -Wnested-externs -Winline -Wno-long-long -Wfloat-equal -Wmissing-format-attribute -Wmissing-noreturn -Wpacked -Wdisabled-optimization -Wmultichar -Wendif-labels -Wdeclaration-after-statement -Wold-style-definition -Winvalid-pch -O -fomit-frame-pointer -finline-functions -MT H5Omtime.lo -MD -MP -MF .deps/H5Omtime.Tpo -c H5Omtime.c -o H5Omtime.o H5Omtime.c: In function `H5O_mtime_decode': H5Omtime.c:194: warning: implicit declaration of function `tzset' H5Omtime.c:194: warning: nested extern declaration of `tzset' H5Omtime.c:230: error: `timezone' undeclared (first use in this function) H5Omtime.c:230: error: (Each undeclared identifier is reported only once H5Omtime.c:230: error: for each function it appears in.) Back on 27 November 2007 I built beta 5 with no problems. Is this likely to be related to the new Cygwin versions released in December? I can see some discussion of timezone and tzset on the list archives in the last couple of months, but don't know whether they relate to my problem. Earlier versions of Cygwin allowed to link against a very old, very non-standard, timezone() function. Since Cygwin 1.5.25, the timezone() function is only available as exported symbol for old applications built against earlier Cygwin release. For new applications, timezone is only available as variable of type long, according to POSIX. See http://www.opengroup.org/onlinepubs/009695399/functions/timezone.html I assume that HDF5 special cases the usage of timezone as being a function for Cygwin. Remove this code and use the timezone variable as on other POSIX compliant systems. Make sure that time.h gets included before using the timezone variable. Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
Re: HDF5 and timezone
[Sorry, but this message will be wrongly threaded on the archive, as it is being sent as a reply to my original message, rather than to Corinna's response. I neglected to subscribe to the list before sending, a neglect that I have now remedied.] Thanks for this response, Corinna: http://cygwin.com/ml/cygwin/2008-01/msg00449.html I have worked around the problem with HDF5 and reported the problem to the maintainers. I expect they will want to support both 1.5.25 and earlier versions. How long has the POSIX-compliant form of timezone been available? -- Mark Hadfield Ka puwaha te tai nei, Hoea tahi tatou [EMAIL PROTECTED] National Institute for Water and Atmospheric Research (NIWA) -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
Re: HDF5 and timezone
On Jan 24 10:19, Mark Hadfield wrote: I have worked around the problem with HDF5 and reported the problem to the maintainers. I expect they will want to support both 1.5.25 and earlier versions. How long has the POSIX-compliant form of timezone been available? The timezone variable has been around since 1997, but it's called _timezone for historical reasons. Prior to 1.5.25 there was a # ifndef timezonevar char *timezone (void); # elif !defined(timezone) # define timezone _timezone # endif #endif /*__STRICT_ANSI__*/ so you have to `#define timezonevar' to get the timezone variable. The problem is that this collides potentially with the definition of struct timezone. 1.5.25 now defines timezone like this: extern long timezone __asm__ (__timezone); In theory (and if the code doesn't use the struct timezone) the below code should be portable and should work fine with any version of Cygwin: #ifdef __CYGWIN__ #define timezonevar #endif #include time.h [... use timezone variable ...] Corinna -- Corinna Vinschen Please, send mails regarding Cygwin to Cygwin Project Co-Leader cygwin AT cygwin DOT com Red Hat -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
HDF5 and timezone
Building HDF5 (either the recently released RC1 or the previous beta 5) under Cygwin fails with gcc -DHAVE_CONFIG_H -I. -DNDEBUG -UH5_DEBUG_API -std=c99 -pedantic -Wall -Wextra -Wundef -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Wconversion -Wsign-compare -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wredundant-decls -Wnested-externs -Winline -Wno-long-long -Wfloat-equal -Wmissing-format-attribute -Wmissing-noreturn -Wpacked -Wdisabled-optimization -Wmultichar -Wendif-labels -Wdeclaration-after-statement -Wold-style-definition -Winvalid-pch -O -fomit-frame-pointer -finline-functions -MT H5Omtime.lo -MD -MP -MF .deps/H5Omtime.Tpo -c H5Omtime.c -o H5Omtime.o H5Omtime.c: In function `H5O_mtime_decode': H5Omtime.c:194: warning: implicit declaration of function `tzset' H5Omtime.c:194: warning: nested extern declaration of `tzset' H5Omtime.c:230: error: `timezone' undeclared (first use in this function) H5Omtime.c:230: error: (Each undeclared identifier is reported only once H5Omtime.c:230: error: for each function it appears in.) Back on 27 November 2007 I built beta 5 with no problems. Is this likely to be related to the new Cygwin versions released in December? I can see some discussion of timezone and tzset on the list archives in the last couple of months, but don't know whether they relate to my problem. I generally keep my Cygwin installation up to data and right now I have $ cygcheck -c cygwin Cygwin Package Information Package VersionStatus cygwin 1.5.25-7 OK -- Mark Hadfield Ka puwaha te tai nei, Hoea tahi tatou [EMAIL PROTECTED] National Institute for Water and Atmospheric Research (NIWA) -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/
