diff options
Diffstat (limited to 'm4/include_next.m4')
| -rw-r--r-- | m4/include_next.m4 | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/m4/include_next.m4 b/m4/include_next.m4 index 14a1009..a60a261 100644 --- a/m4/include_next.m4 +++ b/m4/include_next.m4 @@ -1,5 +1,5 @@ -# include_next.m4 serial 21 -dnl Copyright (C) 2006-2011 Free Software Foundation, Inc. +# include_next.m4 serial 23 +dnl Copyright (C) 2006-2012 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, dnl with or without modifications, as long as this notice is preserved. @@ -143,7 +143,7 @@ choke me # even if the compiler does not support include_next. # The three "///" are to pacify Sun C 5.8, which otherwise would say # "warning: #include of /usr/include/... may be non-portable". -# Use `""', not `<>', so that the /// cannot be confused with a C99 comment. +# Use '""', not '<>', so that the /// cannot be confused with a C99 comment. # Note: This macro assumes that the header file is not empty after # preprocessing, i.e. it does not only define preprocessor macros but also # provides some type/enum definitions or function/variable declarations. @@ -219,13 +219,20 @@ changequote(,) gl_dirsep_regex='[/\\]' ;; *) - gl_dirsep_regex='/' + gl_dirsep_regex='\/' ;; esac + dnl A sed expression that turns a string into a basic regular + dnl expression, for use within "/.../". + gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g' changequote([,]) - gl_absolute_header_sed='\#'"${gl_dirsep_regex}"']m4_defn([gl_HEADER_NAME])[#{ - s#.*"\(.*'"${gl_dirsep_regex}"']m4_defn([gl_HEADER_NAME])[\)".*#\1# - s#^/[^/]#//&# + gl_header_literal_regex=`echo ']m4_defn([gl_HEADER_NAME])[' \ + | sed -e "$gl_make_literal_regex_sed"` + gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{ + s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/ +changequote(,)dnl + s|^/[^/]|//&| +changequote([,])dnl p q }' |