MSP430 IAR C/C++ Compiler reference guide - Rice University

Include file search procedure●Via environment variablesThe compiler automatically appends the value of the environment variables to everycommand line; see Environment variables, page 134.● Via a text file by using the -f option; see -f, page 152.For general guidelines for the option syntax, an options summary, and a detaileddescription of each option, see the Compiler options chapter.ENVIRONMENT VARIABLESThe following environment variables can be used with the MSP430 IAR C/C++Compiler:Environment variable DescriptionC_INCLUDEQCC430Table 27: Compiler environment variablesSpecifies directories to search for include files; for example:C_INCLUDE=c:\program files\iar systems\embeddedworkbench 4.n\430\inc;c:\headersSpecifies command line options; for example: QCC430=-lA asm.lstInclude file search procedureThis is a detailed description of the compiler’s #include file search procedure:●●●If the name of the #include file is an absolute path, that file is opened.If the compiler encounters the name of an #include file in angle brackets, such as:#include it searches the following directories for the file to include:1 The directories specified with the -I option, in the order that they werespecified, see -I, page 153.2 The directories specified using the C_INCLUDE environment variable, if any, seeEnvironment variables, page 134.If the compiler encounters the name of an #include file in double quotes, forexample:#include "vars.h"it searches the directory of the source file in which the #include statement occurs,and then performs the same sequence as for angle-bracketed filenames.134MSP430 IAR C/C++ CompilerReference Guide