Searching for Pragma Pack Compiler Support information? Find all needed info by using official links provided below.
https://gcc.gnu.org/onlinedocs/gcc-4.4.4/gcc/Structure_002dPacking-Pragmas.html
For compatibility with Microsoft Windows compilers, GCC supports a set of #pragma directives which change the maximum alignment of members of structures (other than zero-width bitfields), unions, and classes subsequently defined. The n value below always is required to be a small power of two and specifies the new alignment in bytes.
http://www.keil.com/support/man/docs/armclang_ref/armclang_ref_chr1384946440202.htm
This pragma is a GNU compiler extension that the Arm ® compiler supports.
http://www.keil.com/support/man/docs/armcc/armcc_chr1359124990875.htm
NoteThis pragma is a GNU compiler extension that the ARM compiler supports. Syntax #pragma pack(n) Where: n is the alignment in bytes, valid alignment values being 1, 2, 4 and 8. Default The default is #pragma pack(8).
https://developer.arm.com/docs/dui0774/latest/compiler-specific-pragmas/pragma-pack
This pragma is a GNU compiler extension that the Arm ® compiler supports.
https://e2e.ti.com/support/tools/ccs/f/81/t/516795?Pragma-pack-and-code-composer-studio
The TI ARM compiler version 5.2.5 does support packing structures using the pragmas you first show. Consider this example... Note how the packed structure is packed on 1 byte boundaries. Packing on 4 byte boundaries, for a struct which contains nothing but int members, is the same as the compiler …
https://stackoverflow.com/questions/12148348/pragma-once-compilers-support
He's worrying about portability there. C++ is widely used. For example, some are using hardware-specific compilers for embedded systems. As Wikipedia pointed out one drawback, #pragma once is not perfect. But other than that it is really convenient and good, so I personally think there's no need to avoid it if your compilers all support it.
https://docs.microsoft.com/en-us/cpp/preprocessor/pack
The statement #pragma pack (pop, r1, 2) is equivalent to #pragma pack (pop, r1) followed by #pragma pack(2). identifier (Optional) When used with push, assigns a name to the record on the internal compiler stack. When used with pop, pops records off the internal stack until identifier is removed.
http://www.keil.com/support/man/docs/armclang_mig/armclang_mig_chr1398848167694.htm
Non-Confidential PDF version100068_0613_00_en Arm® Compiler Migration and Compatibility GuideVersion 6.13Home > Compiler Source Code Compatibility > Language extension compatibility: pragmas4.3 Language extension compatibility: pragmas Arm® Compiler 6 provides support for some pragmas that are supported in Arm Compiler 5. Other pragmas are not supported, or must be …
https://www.ibm.com/support/knowledgecenter/en/SSXVZZ_16.1.1/com.ibm.xlcpp1611.lelinux.doc/compiler_ref/pragmas_gcc_clang_support.html
The following list shows the key GCC pragmas that are supported by IBM XL C/C++ for Linux, V16.1.1. For details about GCC pragmas, see the GNU Compiler Collection ...
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