(autoconf.info)Compilers and Preprocessors


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5.10 Compilers and Preprocessors
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All the tests for compilers (`AC_PROG_CC', `AC_PROG_CXX',
`AC_PROG_F77') define the output variable `EXEEXT' based on the output
of the compiler, typically to the empty string if Posix and `.exe' if a
DOS variant.

   They also define the output variable `OBJEXT' based on the output of
the compiler, after `.c' files have been excluded, typically to `o' if
Posix, `obj' if a DOS variant.

   If the compiler being used does not produce executables, the tests
fail.  If the executables can't be run, and cross-compilation is not
enabled, they fail too.  Note: Manual Configuration, for more on
support for cross compiling.

* Specific Compiler Characteristics
Some portability issues
* Generic Compiler Characteristics
Language independent tests and features
* C Compiler
Checking its characteristics
* C++ Compiler
Likewise
* Objective C Compiler
Likewise
* Erlang Compiler and Interpreter
Likewise
* Fortran Compiler
Likewise

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