Mercurial > hg > octave-nkf > gnulib-hg
changeset 8164:5ea509f95b49
New module 'link-warning'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sat, 17 Feb 2007 22:21:32 +0000 |
parents | e717b8d5a144 |
children | b8956234db55 |
files | ChangeLog build-aux/link-warning.h lib/string_.h modules/link-warning modules/string |
diffstat | 5 files changed, 61 insertions(+), 28 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,12 @@ +2007-02-17 Bruno Haible <bruno@clisp.org> + + * modules/link-warning: New file. + * build-aux/link-warning.h: New file, extracted from lib/string_.h. + * lib/string_.h (GL_LINK_WARNING): Remove definition. + * modules/string (Depends-on): Add link-warning. + (Makefile.am): Copy the contents of build-aux/link-warning.h into + string.h. + 2007-02-17 Bruno Haible <bruno@clisp.org> * lib/string_.h (memmem, mempcpy, memrchr, stpcpy, stpncpy, strcasecmp,
new file mode 100644 --- /dev/null +++ b/build-aux/link-warning.h @@ -0,0 +1,28 @@ +/* GL_LINK_WARNING("literal string") arranges to emit the literal string as + a linker warning on most glibc systems. + We use a linker warning rather than a preprocessor warning, because + #warning cannot be used inside macros. */ +#ifndef GL_LINK_WARNING + /* This works on platforms with GNU ld and ELF object format. + Testing __GLIBC__ is sufficient for asserting that GNU ld is in use. + Testing __ELF__ guarantees the ELF object format. + Testing __GNUC__ is necessary for the compound expression syntax. */ +# if defined __GLIBC__ && defined __ELF__ && defined __GNUC__ +# define GL_LINK_WARNING(message) \ + GL_LINK_WARNING1 (__FILE__, __LINE__, message) +# define GL_LINK_WARNING1(file, line, message) \ + GL_LINK_WARNING2 (file, line, message) /* macroexpand file and line */ +# define GL_LINK_WARNING2(file, line, message) \ + GL_LINK_WARNING3 (file ":" #line ": warning: " message) +# define GL_LINK_WARNING3(message) \ + ({ static const char warning[sizeof (message)] \ + __attribute__ ((__unused__, \ + __section__ (".gnu.warning"), \ + __aligned__ (1))) \ + = message "\n"; \ + (void)0; \ + }) +# else +# define GL_LINK_WARNING(message) ((void) 0) +# endif +#endif
--- a/lib/string_.h +++ b/lib/string_.h @@ -22,34 +22,7 @@ #include @ABSOLUTE_STRING_H@ -/* GL_LINK_WARNING("literal string") arranges to emit the literal string as - a linker warning on most glibc systems. - We use a linker warning rather than a preprocessor warning, because - #warning cannot be used inside macros. */ -#ifndef GL_LINK_WARNING - /* This works on platforms with GNU ld and ELF object format. - Testing __GLIBC__ is sufficient for asserting that GNU ld is in use. - Testing __ELF__ guarantees the ELF object format. - Testing __GNUC__ is necessary for the compound expression syntax. */ -# if defined __GLIBC__ && defined __ELF__ && defined __GNUC__ -# define GL_LINK_WARNING(message) \ - GL_LINK_WARNING1 (__FILE__, __LINE__, message) -# define GL_LINK_WARNING1(file, line, message) \ - GL_LINK_WARNING2 (file, line, message) /* macroexpand file and line */ -# define GL_LINK_WARNING2(file, line, message) \ - GL_LINK_WARNING3 (file ":" #line ": warning: " message) -# define GL_LINK_WARNING3(message) \ - ({ static const char warning[sizeof (message)] \ - __attribute__ ((__unused__, \ - __section__ (".gnu.warning"), \ - __aligned__ (1))) \ - = message "\n"; \ - (void)0; \ - }) -# else -# define GL_LINK_WARNING(message) ((void) 0) -# endif -#endif +/* The definition of GL_LINK_WARNING is copied here. */ #ifdef __cplusplus
new file mode 100644 --- /dev/null +++ b/modules/link-warning @@ -0,0 +1,21 @@ +Description: +A C macro for emitting link time warnings. + +Files: +build-aux/link-warning.h + +Depends-on: + +configure.ac: + +Makefile.am: +LINK_WARNING_H=$(top_srcdir)/build-aux/link-warning.h + +Include: + +License: +LGPL + +Maintainer: +Bruno Haible +
--- a/modules/string +++ b/modules/string @@ -8,6 +8,7 @@ Depends-on: absolute-header extensions +link-warning configure.ac: gl_HEADER_STRING_H @@ -63,6 +64,7 @@ -e 's|@''HAVE_STRSEP''@|$(HAVE_STRSEP)|g' \ -e 's|@''HAVE_STRCASESTR''@|$(HAVE_STRCASESTR)|g' \ -e 's|@''HAVE_DECL_STRTOK_R''@|$(HAVE_DECL_STRTOK_R)|g' \ + -e '/definition of GL_LINK_WARNING/r $(LINK_WARNING_H)' \ < $(srcdir)/string_.h; \ } > $@-t mv $@-t $@