From eac3e079667d0a56f2ba84469a764407f3aee2a9 Mon Sep 17 00:00:00 2001 From: Joey Ye Date: Fri, 9 May 2014 08:50:22 +0000 Subject: [PATCH] files.c (find_file_in_dir): Always try to shorten for DOS non-system headers. 2014-05-09 Joey Ye * files.c (find_file_in_dir): Always try to shorten for DOS non-system headers. * init.c (ENABLE_CANONICAL_SYSTEM_HEADERS): Default enabled for DOS. From-SVN: r210264 --- libcpp/ChangeLog | 6 ++++++ libcpp/files.c | 10 ++++++++-- libcpp/init.c | 4 ++++ 3 files changed, 18 insertions(+), 2 deletions(-) diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog index 20171bc8e9e..619dfd8308a 100644 --- a/libcpp/ChangeLog +++ b/libcpp/ChangeLog @@ -1,3 +1,9 @@ +2014-05-09 Joey Ye + + * files.c (find_file_in_dir): Always try to shorten for DOS + non-system headers. + * init.c (ENABLE_CANONICAL_SYSTEM_HEADERS): Default enabled for DOS. + 2014-05-07 Richard Biener * configure.ac: Always set need_64bit_hwint to yes. diff --git a/libcpp/files.c b/libcpp/files.c index 7e887785444..ad68682e99e 100644 --- a/libcpp/files.c +++ b/libcpp/files.c @@ -387,8 +387,14 @@ find_file_in_dir (cpp_reader *pfile, _cpp_file *file, bool *invalid_pch) char *copy; void **pp; - /* We try to canonicalize system headers. */ - if (CPP_OPTION (pfile, canonical_system_headers) && file->dir->sysp) + /* We try to canonicalize system headers. For DOS based file + * system, we always try to shorten non-system headers, as DOS + * has a tighter constraint on max path length. */ + if (CPP_OPTION (pfile, canonical_system_headers) && file->dir->sysp +#ifdef HAVE_DOS_BASED_FILE_SYSTEM + || !file->dir->sysp +#endif + ) { char * canonical_path = maybe_shorter_path (path); if (canonical_path) diff --git a/libcpp/init.c b/libcpp/init.c index f10413ab3eb..b80951544d4 100644 --- a/libcpp/init.c +++ b/libcpp/init.c @@ -27,8 +27,12 @@ along with this program; see the file COPYING3. If not see #include "filenames.h" #ifndef ENABLE_CANONICAL_SYSTEM_HEADERS +#ifdef HAVE_DOS_BASED_FILE_SYSTEM +#define ENABLE_CANONICAL_SYSTEM_HEADERS 1 +#else #define ENABLE_CANONICAL_SYSTEM_HEADERS 0 #endif +#endif static void init_library (void); static void mark_named_operators (cpp_reader *, int);