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Mention CPP and CXXCPP filename limitations.

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David MacKenzie 1994-05-17 19:26:47 +00:00
parent b41a3f30ad
commit 64c2c127b8
2 changed files with 8 additions and 0 deletions
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autoconf.texi
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@ -556,6 +556,8 @@ and set shell variable @code{GCC} to @samp{yes} for use by macros such as
@maindex PROG_CPP @maindex PROG_CPP
Set shell and @code{make} variable @code{CPP} to a command that runs the Set shell and @code{make} variable @code{CPP} to a command that runs the
C preprocessor. If @samp{$CC -E} doesn't work, it uses @file{/lib/cpp}. C preprocessor. If @samp{$CC -E} doesn't work, it uses @file{/lib/cpp}.
It is only portable to run @code{CPP} on files with a @file{.c}
extension.
If the current language is C (@pxref{Language Choice}), many of the If the current language is C (@pxref{Language Choice}), many of the
specific test macros use the value of @code{CPP} indirectly by calling specific test macros use the value of @code{CPP} indirectly by calling
@ -580,6 +582,8 @@ found the GNU C++ compiler, the empty string if not.
@maindex PROG_CXXCPP @maindex PROG_CXXCPP
Set shell and @code{make} variable @code{CXXCPP} to a command that runs the Set shell and @code{make} variable @code{CXXCPP} to a command that runs the
C++ preprocessor. If @samp{$CXX -E} doesn't work, it uses @file{/lib/cpp}. C++ preprocessor. If @samp{$CXX -E} doesn't work, it uses @file{/lib/cpp}.
It is only portable to run @code{CXXCPP} on files with a @file{.c},
@file{.C}, or @file{.cc} extension.
If the current language is C++ (@pxref{Language Choice}), many of the If the current language is C++ (@pxref{Language Choice}), many of the
specific test macros use the value of @code{CXXCPP} indirectly by specific test macros use the value of @code{CXXCPP} indirectly by

4
doc/autoconf.texi
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@ -556,6 +556,8 @@ and set shell variable @code{GCC} to @samp{yes} for use by macros such as
@maindex PROG_CPP @maindex PROG_CPP
Set shell and @code{make} variable @code{CPP} to a command that runs the Set shell and @code{make} variable @code{CPP} to a command that runs the
C preprocessor. If @samp{$CC -E} doesn't work, it uses @file{/lib/cpp}. C preprocessor. If @samp{$CC -E} doesn't work, it uses @file{/lib/cpp}.
It is only portable to run @code{CPP} on files with a @file{.c}
extension.
If the current language is C (@pxref{Language Choice}), many of the If the current language is C (@pxref{Language Choice}), many of the
specific test macros use the value of @code{CPP} indirectly by calling specific test macros use the value of @code{CPP} indirectly by calling
@ -580,6 +582,8 @@ found the GNU C++ compiler, the empty string if not.
@maindex PROG_CXXCPP @maindex PROG_CXXCPP
Set shell and @code{make} variable @code{CXXCPP} to a command that runs the Set shell and @code{make} variable @code{CXXCPP} to a command that runs the
C++ preprocessor. If @samp{$CXX -E} doesn't work, it uses @file{/lib/cpp}. C++ preprocessor. If @samp{$CXX -E} doesn't work, it uses @file{/lib/cpp}.
It is only portable to run @code{CXXCPP} on files with a @file{.c},
@file{.C}, or @file{.cc} extension.
If the current language is C++ (@pxref{Language Choice}), many of the If the current language is C++ (@pxref{Language Choice}), many of the
specific test macros use the value of @code{CXXCPP} indirectly by specific test macros use the value of @code{CXXCPP} indirectly by