Ingres 9.2 Migration Guide - Actian

Application RebuildingModifications Required For C ApplicationsTo build C applications byte-aligned with Ingres, a number of files requiremodification. Any modifications made may need to be re-applied following theinstallation of an Ingres patch.The first files to modify are the C header files supplied in the followingdirectories:II_SYSTEM:[INGRES.DEMO.API.ASC]II_SYSTEM:[INGRES.DEMO.UDADTS]II_SYSTEM:[INGRES.FILES]At this time, the only header files that contain Ingres structure definitions needmodification, these are:II_SYSTEM:[INGRES.DEMO.API.ASC]ASC.HII_SYSTEM:[INGRES.DEMO.UDADTS]UDT.HII_SYSTEM:[INGRES.FILES]ABFURTS.H,II_SYSTEM:[INGRES.FILES]EQSQLCA.H,II_SYSTEM:[INGRES.FILES]EQSQLDA.H,II_SYSTEM:[INGRES.FILES]FRAME2.H,II_SYSTEM:[INGRES.FILES]FRAME60.H,II_SYSTEM:[INGRES.FILES]FRAME61.H,II_SYSTEM:[INGRES.FILES]IIADD.H,II_SYSTEM:[INGRES.FILES]IIAPI.H,II_SYSTEM:[INGRES.FILES]OSLHDR.H,II_SYSTEM:[INGRES.FILES]RAAT.H,II_SYSTEM:[INGRES.FILES]SPATIAL.HOn the first line in each of the above files add:#pragma member_alignment save#pragma member_alignmentOn the last line in each of the above files add:#pragma member_alignment restoreNote: The "#" of the #pragma instruction must be the first character on theline.The purpose of these pragmas is to direct the compiler to naturally align theelements of the defined structures, then to restore the alignment strategyused before the header file was included.86 Migration Guide