Joseph Myers <jos...@codesourcery.com> writes: > Contrary to a previous review, you should *not* be removing RejectNegative > from -fdebug-prefix-map=, and should be including it on both the new > options. [...] > > The patch is OK with that fixed.
Thanks for finding the time to review this on the last minute. Below is the new revision of the patch. The changes compared to the previous revision are: 1. Rebase to the latest trunk. 2. Add RejectNegative back for -fdebug-prefix-map as well as for the two new options. 3. Use strrchr() instead of strchr() when looking for '=' in the option value. This change is suggested here[1] and the reasoning is that we (as project authors) can control paths inside our projects (not to have any '=') but not where the users choose to build them. While strictly speaking this is a backwards-incompatible change, the old semantics in the presence of '=' is a broken build, so this is probably ok (but if not, let me know and I will revert this change). I've also added this rationale to add_prefix_map() and a note in the ChangeLog. [1] https://gcc.gnu.org/ml/gcc-patches/2017-12/msg01278.html libcpp/ChangeLog: 2018-01-13 Boris Kolpackov <bo...@codesynthesis.com> PR other/70268 * include/cpplib.h (cpp_callbacks::remap_filename): New callback. * libcpp/macro.c (_cpp_builtin_macro_text): Call remap_filename for __FILE__ and __BASE_FILE__. gcc/ChangeLog: 2018-01-13 Boris Kolpackov <bo...@codesynthesis.com> PR other/70268 * common.opt: (-ffile-prefix-map): New option. * opts.c (common_handle_option): Defer it. * opts-global.c (handle_common_deferred_options): Handle it. * debug.h (remap_debug_filename, add_debug_prefix_map): Move to... * file-prefix-map.h: New file. (remap_debug_filename, add_debug_prefix_map): ...here. (add_macro_prefix_map, add_file_prefix_map, remap_macro_filename): New. * final.c (debug_prefix_map, add_debug_prefix_map remap_debug_filename): Move to... * file-prefix-map.c: New file. (file_prefix_map, add_prefix_map, remap_filename) ...here and rename, generalize, get rid of alloca(), use strrchr() instead of strchr(). (add_macro_prefix_map, add_debug_prefix_map, add_file_prefix_map): Implement in terms of add_prefix_map(). (remap_macro_filename, remap_debug_filename): Implement in term of remap_filename(). * Makefile.in (OBJS, PLUGIN_HEADERS): Add new files. * builtins.c (fold_builtin_FILE): Call remap_macro_filename(). * dbxout.c: Include file-prefix-map.h. * varasm.c: Likewise. * vmsdbgout.c: Likewise. * xcoffout.c: Likewise. * dwarf2out.c: Likewise plus omit new options from DW_AT_producer. * doc/cppopts.texi (-fmacro-prefix-map): Document. * doc/invoke.texi (-ffile-prefix-map): Document. (-fdebug-prefix-map): Update description. gcc/c-family/ChangeLog: 2018-01-13 Boris Kolpackov <bo...@codesynthesis.com> PR other/70268 * c-family/c.opt (-fmacro-prefix-map): New option. * c-family/c-opts.c (c_common_handle_option): Handle it. * c-family/c-lex.c (init_c_lex): Set remap_filename cpp callback. * c-family/c-ppoutput.c (init_pp_output): Likewise. gcc/testsuite/ChangeLog: 2018-01-13 Boris Kolpackov <bo...@codesynthesis.com> PR other/70268 * c-c++-common/ffile-prefix-map.c: New test. * c-c++-common/fmacro-prefix-map.c: New test. * c-c++-common/cpp/ffile-prefix-map.c: New test. * c-c++-common/cpp/fmacro-prefix-map.c: New test. diff --git a/gcc/Makefile.in b/gcc/Makefile.in index f04b8a224c0..ba7eb8ef2f8 100644 --- a/gcc/Makefile.in +++ b/gcc/Makefile.in @@ -1284,6 +1284,7 @@ OBJS = \ expmed.o \ expr.o \ fibonacci_heap.o \ + file-prefix-map.o \ final.o \ fixed-value.o \ fold-const.o \ @@ -3505,8 +3506,8 @@ PLUGIN_HEADERS = $(TREE_H) $(CONFIG_H) $(SYSTEM_H) coretypes.h $(TM_H) \ tree-ssa-loop-niter.h tree-ssa-ter.h tree-ssa-threadedge.h \ tree-ssa-threadupdate.h inchash.h wide-int.h signop.h hash-map.h \ hash-set.h dominance.h cfg.h cfgrtl.h cfganal.h cfgbuild.h cfgcleanup.h \ - lcm.h cfgloopmanip.h builtins.def chkp-builtins.def pass-instances.def \ - params.list + lcm.h cfgloopmanip.h file-prefix-map.h builtins.def chkp-builtins.def \ + pass-instances.def params.list # generate the 'build fragment' b-header-vars s-header-vars: Makefile diff --git a/gcc/builtins.c b/gcc/builtins.c index a0d0a10d38f..675a46225af 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -70,6 +70,7 @@ along with GCC; see the file COPYING3. If not see #include "case-cfn-macros.h" #include "gimple-fold.h" #include "intl.h" +#include "file-prefix-map.h" /* remap_macro_filename() */ struct target_builtins default_target_builtins; #if SWITCHABLE_TARGET @@ -8859,7 +8860,13 @@ static inline tree fold_builtin_FILE (location_t loc) { if (const char *fname = LOCATION_FILE (loc)) + { + /* The documentation says this builtin is equivalent to the preprocessor + __FILE__ macro so it appears appropriate to use the same file prefix + mappings. */ + fname = remap_macro_filename (fname); return build_string_literal (strlen (fname) + 1, fname); + } return build_string_literal (1, ""); } diff --git a/gcc/c-family/c-lex.c b/gcc/c-family/c-lex.c index e82670f487c..a4ad0a30f38 100644 --- a/gcc/c-family/c-lex.c +++ b/gcc/c-family/c-lex.c @@ -27,6 +27,7 @@ along with GCC; see the file COPYING3. If not see #include "stor-layout.h" #include "c-pragma.h" #include "debug.h" +#include "file-prefix-map.h" /* remap_macro_filename() */ #include "attribs.h" @@ -82,6 +83,7 @@ init_c_lex (void) cb->has_attribute = c_common_has_attribute; cb->get_source_date_epoch = cb_get_source_date_epoch; cb->get_suggestion = cb_get_suggestion; + cb->remap_filename = remap_macro_filename; /* Set the debug callbacks if we can use them. */ if ((debug_info_level == DINFO_LEVEL_VERBOSE diff --git a/gcc/c-family/c-opts.c b/gcc/c-family/c-opts.c index f84ecf4539c..c82c3619961 100644 --- a/gcc/c-family/c-opts.c +++ b/gcc/c-family/c-opts.c @@ -40,6 +40,7 @@ along with GCC; see the file COPYING3. If not see #include "plugin.h" /* For PLUGIN_INCLUDE_FILE event. */ #include "mkdeps.h" #include "dumpfile.h" +#include "file-prefix-map.h" /* add_*_prefix_map() */ #ifndef DOLLARS_IN_IDENTIFIERS # define DOLLARS_IN_IDENTIFIERS true @@ -448,6 +449,10 @@ c_common_handle_option (size_t scode, const char *arg, int value, cpp_opts->dollars_in_ident = value; break; + case OPT_fmacro_prefix_map_: + add_macro_prefix_map (arg); + break; + case OPT_ffreestanding: value = !value; /* Fall through. */ diff --git a/gcc/c-family/c-ppoutput.c b/gcc/c-family/c-ppoutput.c index 9d08776c187..8c525caf28d 100644 --- a/gcc/c-family/c-ppoutput.c +++ b/gcc/c-family/c-ppoutput.c @@ -22,6 +22,7 @@ #include "c-common.h" /* For flags. */ #include "../libcpp/internal.h" #include "c-pragma.h" /* For parse_in. */ +#include "file-prefix-map.h" /* remap_macro_filename() */ /* Encapsulates state used to convert a stream of tokens into a text file. */ @@ -151,6 +152,7 @@ init_pp_output (FILE *out_stream) cb->has_attribute = c_common_has_attribute; cb->get_source_date_epoch = cb_get_source_date_epoch; + cb->remap_filename = remap_macro_filename; /* Initialize the print structure. */ print.src_line = 1; diff --git a/gcc/c-family/c.opt b/gcc/c-family/c.opt index 16a515afd55..9c7172607a7 100644 --- a/gcc/c-family/c.opt +++ b/gcc/c-family/c.opt @@ -1390,6 +1390,10 @@ fdollars-in-identifiers C ObjC C++ ObjC++ Permit '$' as an identifier character. +fmacro-prefix-map= +C ObjC C++ ObjC++ Joined RejectNegative +-fmacro-prefix-map=<old>=<new> Map one directory name to another in __FILE__, __BASE_FILE__, and __builtin_FILE(). + fdump-ada-spec C ObjC C++ ObjC++ RejectNegative Var(flag_dump_ada_spec) Write all declarations as Ada code transitively. diff --git a/gcc/common.opt b/gcc/common.opt index a07cfdb8409..a95b69f9788 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -1175,7 +1175,11 @@ Common RejectNegative Joined Var(common_deferred_options) Defer fdebug-prefix-map= Common Joined RejectNegative Var(common_deferred_options) Defer -Map one directory name to another in debug information. +-fdebug-prefix-map=<old>=<new> Map one directory name to another in debug information. + +ffile-prefix-map= +Common Joined RejectNegative Var(common_deferred_options) Defer +-ffile-prefix-map=<old>=<new> Map one directory name to another in compilation result. fdebug-types-section Common Report Var(flag_debug_types_section) Init(0) diff --git a/gcc/dbxout.c b/gcc/dbxout.c index 507fd41f9ea..a77e652d3d2 100644 --- a/gcc/dbxout.c +++ b/gcc/dbxout.c @@ -91,6 +91,7 @@ along with GCC; see the file COPYING3. If not see #include "common/common-target.h" #include "langhooks.h" #include "expr.h" +#include "file-prefix-map.h" /* remap_debug_filename() */ #ifdef XCOFF_DEBUGGING_INFO #include "xcoffout.h" diff --git a/gcc/debug.h b/gcc/debug.h index dc51182e4c2..e1dfe4befaa 100644 --- a/gcc/debug.h +++ b/gcc/debug.h @@ -249,9 +249,6 @@ extern bool dwarf2out_do_frame (void); extern bool dwarf2out_do_cfi_asm (void); extern void dwarf2out_switch_text_section (void); -const char *remap_debug_filename (const char *); -void add_debug_prefix_map (const char *); - /* For -fdump-go-spec. */ extern const struct gcc_debug_hooks * diff --git a/gcc/doc/cppopts.texi b/gcc/doc/cppopts.texi index 6bfa46e1c32..e32e2759d22 100644 --- a/gcc/doc/cppopts.texi +++ b/gcc/doc/cppopts.texi @@ -287,6 +287,17 @@ When this option is given no argument, the default parameter value is Note that @code{-ftrack-macro-expansion=2} is activated by default. +@item -fmacro-prefix-map=@var{old}=@var{new} +@opindex fmacro-prefix-map +When preprocessing files residing in directory @file{@var{old}}, +expand the @code{__FILE__} and @code{__BASE_FILE__} macros as if the +files resided in directory @file{@var{new}} instead. This can be used +to change an absolute path to a relative path by using @file{.} for +@var{new} which can result in more reproducible builds that are +location independent. This option also affects +@code{__builtin_FILE()} during compilation. See also +@option{-ffile-prefix-map}. + @item -fexec-charset=@var{charset} @opindex fexec-charset @cindex character set, execution @@ -534,4 +545,3 @@ token in the output is preceded by the dump of the map its location belongs to. When used from GCC without @option{-E}, this option has no effect. - diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 89a4727ecdf..e8dcec39ae2 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -172,7 +172,8 @@ in the following sections. @gccoptlist{-c -S -E -o @var{file} -x @var{language} @gol -v -### --help@r{[}=@var{class}@r{[},@dots{}@r{]]} --target-help --version @gol -pass-exit-codes -pipe -specs=@var{file} -wrapper @gol -@@@var{file} -fplugin=@var{file} -fplugin-arg-@var{name}=@var{arg} @gol +@@@var{file} -ffile-prefix-map=@var{old}=@var{new} @gol +-fplugin=@var{file} -fplugin-arg-@var{name}=@var{arg} @gol -fdump-ada-spec@r{[}-slim@r{]} -fada-spec-parent=@var{unit} -fdump-go-spec=@var{file}} @item C Language Options @@ -481,9 +482,9 @@ Objective-C and Objective-C++ Dialects}. -dD -dI -dM -dN -dU @gol -fdebug-cpp -fdirectives-only -fdollars-in-identifiers @gol -fexec-charset=@var{charset} -fextended-identifiers @gol --finput-charset=@var{charset} -fno-canonical-system-headers @gol --fpch-deps -fpch-preprocess -fpreprocessed @gol --ftabstop=@var{width} -ftrack-macro-expansion @gol +-finput-charset=@var{charset} -fmacro-prefix-map=@var{old}=@var{new} @gol +-fno-canonical-system-headers @gol -fpch-deps -fpch-preprocess @gol +-fpreprocessed -ftabstop=@var{width} -ftrack-macro-expansion @gol -fwide-exec-charset=@var{charset} -fworking-directory @gol -H -imacros @var{file} -include @var{file} @gol -M -MD -MF -MG -MM -MMD -MP -MQ -MT @gol @@ -1658,6 +1659,16 @@ This invokes all subprograms of @command{gcc} under @samp{gdb --args}, thus the invocation of @command{cc1} is @samp{gdb --args cc1 @dots{}}. +@item -ffile-prefix-map=@var{old}=@var{new} +@opindex ffile-prefix-map +When compiling files residing in directory @file{@var{old}}, record +any references to them in the result of the compilation as if the +files resided in directory @file{@var{new}} instead. Specifying this +option is equivalent to specifying all the individual +@option{-f*-prefix-map} options. This can be used to make reproducible +builds that are location independent. See also +@option{-fmacro-prefix-map} and @option{-fdebug-prefix-map}. + @item -fplugin=@var{name}.so @opindex fplugin Load the plugin code in file @var{name}.so, assumed to be a @@ -7098,13 +7109,14 @@ link processing time. Merging is enabled by default. @item -fdebug-prefix-map=@var{old}=@var{new} @opindex fdebug-prefix-map -When compiling files in directory @file{@var{old}}, record debugging -information describing them as in @file{@var{new}} instead. This can be -used to replace a build-time path with an install-time path in the debug info. -It can also be used to change an absolute path to a relative path by using -@file{.} for @var{new}. This can give more reproducible builds, which are -location independent, but may require an extra command to tell GDB where to -find the source files. +When compiling files residing in directory @file{@var{old}}, record +debugging information describing them as if the files resided in +directory @file{@var{new}} instead. This can be used to replace a +build-time path with an install-time path in the debug info. It can +also be used to change an absolute path to a relative path by using +@file{.} for @var{new}. This can give more reproducible builds, which +are location independent, but may require an extra command to tell GDB +where to find the source files. See also @option{-ffile-prefix-map}. @item -fvar-tracking @opindex fvar-tracking diff --git a/gcc/dwarf2out.c b/gcc/dwarf2out.c index 0cc05cb5b87..c9f356efa44 100644 --- a/gcc/dwarf2out.c +++ b/gcc/dwarf2out.c @@ -95,6 +95,7 @@ along with GCC; see the file COPYING3. If not see #include "rtl-iter.h" #include "stringpool.h" #include "attribs.h" +#include "file-prefix-map.h" /* remap_debug_filename() */ static void dwarf2out_source_line (unsigned int, unsigned int, const char *, int, bool); @@ -23535,6 +23536,8 @@ gen_producer_string (void) case OPT_fltrans_output_list_: case OPT_fresolution_: case OPT_fdebug_prefix_map_: + case OPT_fmacro_prefix_map_: + case OPT_ffile_prefix_map_: case OPT_fcompare_debug: /* Ignore these. */ continue; diff --git a/gcc/file-prefix-map.c b/gcc/file-prefix-map.c new file mode 100644 index 00000000000..88248146ab6 --- /dev/null +++ b/gcc/file-prefix-map.c @@ -0,0 +1,132 @@ +/* Implementation of file prefix remapping support (-f*-prefix-map options). + Copyright (C) 2017 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by the + Free Software Foundation; either version 3, or (at your option) any + later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; see the file COPYING3. If not see + <http://www.gnu.org/licenses/>. */ + +#include "config.h" +#include "system.h" +#include "coretypes.h" +#include "diagnostic.h" +#include "file-prefix-map.h" + +/* Structure recording the mapping from source file and directory names at + compile time to those to be embedded in the compilation result (debug + information, the __FILE__ macro expansion, etc). */ +struct file_prefix_map +{ + const char *old_prefix; + const char *new_prefix; + size_t old_len; + size_t new_len; + struct file_prefix_map *next; +}; + +/* Record a file prefix mapping in the specified map. ARG is the argument to + -f*-prefix-map and must be of the form OLD=NEW. OPT is the option name + for diagnostics. */ +static void +add_prefix_map (file_prefix_map *&maps, const char *arg, const char *opt) +{ + file_prefix_map *map; + const char *p; + + /* Note: looking for the last '='. The thinking is we can control the paths + inside our projects but not where the users build them. */ + p = strrchr (arg, '='); + if (!p) + { + error ("invalid argument %qs to %qs", arg, opt); + return; + } + map = XNEW (file_prefix_map); + map->old_prefix = xstrndup (arg, p - arg); + map->old_len = p - arg; + p++; + map->new_prefix = xstrdup (p); + map->new_len = strlen (p); + map->next = maps; + maps = map; +} + +/* Perform user-specified mapping of filename prefixes. Return the + GC-allocated new name corresponding to FILENAME or FILENAME if no + remapping was performed. */ + +static const char * +remap_filename (file_prefix_map *maps, const char *filename) +{ + file_prefix_map *map; + char *s; + const char *name; + size_t name_len; + + for (map = maps; map; map = map->next) + if (filename_ncmp (filename, map->old_prefix, map->old_len) == 0) + break; + if (!map) + return filename; + name = filename + map->old_len; + name_len = strlen (name) + 1; + + s = (char *) ggc_alloc_atomic (name_len + map->new_len); + memcpy (s, map->new_prefix, map->new_len); + memcpy (s + map->new_len, name, name_len); + return s; +} + +/* NOTE: if adding another -f*-prefix-map option then don't forget to + ignore it in DW_AT_producer (dwarf2out.c). */ + +/* Linked lists of file_prefix_map structures. */ +static file_prefix_map *macro_prefix_maps; /* -fmacro-prefix-map */ +static file_prefix_map *debug_prefix_maps; /* -fdebug-prefix-map */ + +/* Record a file prefix mapping for -fmacro-prefix-map. */ +void +add_macro_prefix_map (const char *arg) +{ + add_prefix_map (macro_prefix_maps, arg, "-fmacro-prefix-map"); +} + +/* Record a file prefix mapping for -fdebug-prefix-map. */ +void +add_debug_prefix_map (const char *arg) +{ + add_prefix_map (debug_prefix_maps, arg, "-fdebug-prefix-map"); +} + +/* Record a file prefix mapping for all -f*-prefix-map. */ +void +add_file_prefix_map (const char *arg) +{ + add_prefix_map (macro_prefix_maps, arg, "-ffile-prefix-map"); + add_prefix_map (debug_prefix_maps, arg, "-ffile-prefix-map"); +} + +/* Remap using -fmacro-prefix-map. Return the GC-allocated new name + corresponding to FILENAME or FILENAME if no remapping was performed. */ +const char * +remap_macro_filename (const char *filename) +{ + return remap_filename (macro_prefix_maps, filename); +} + +/* Remap using -fdebug-prefix-map. Return the GC-allocated new name + corresponding to FILENAME or FILENAME if no remapping was performed. */ +const char * +remap_debug_filename (const char *filename) +{ + return remap_filename (debug_prefix_maps, filename); +} diff --git a/gcc/file-prefix-map.h b/gcc/file-prefix-map.h new file mode 100644 index 00000000000..3309eeed646 --- /dev/null +++ b/gcc/file-prefix-map.h @@ -0,0 +1,28 @@ +/* Declarations for file prefix remapping support (-f*-prefix-map options). + Copyright (C) 2017 Free Software Foundation, Inc. + + This program is free software; you can redistribute it and/or modify it + under the terms of the GNU General Public License as published by the + Free Software Foundation; either version 3, or (at your option) any + later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; see the file COPYING3. If not see + <http://www.gnu.org/licenses/>. */ + +#ifndef GCC_FILE_PREFIX_MAP_H +#define GCC_FILE_PREFIX_MAP_H + +void add_macro_prefix_map (const char *); +void add_debug_prefix_map (const char *); +void add_file_prefix_map (const char *); + +const char *remap_macro_filename (const char *); +const char *remap_debug_filename (const char *); + +#endif /* !GCC_FILE_PREFIX_MAP_H */ diff --git a/gcc/final.c b/gcc/final.c index db3095c5526..01b44806f7d 100644 --- a/gcc/final.c +++ b/gcc/final.c @@ -1507,71 +1507,6 @@ asm_str_count (const char *templ) return count; } -/* ??? This is probably the wrong place for these. */ -/* Structure recording the mapping from source file and directory - names at compile time to those to be embedded in debug - information. */ -struct debug_prefix_map -{ - const char *old_prefix; - const char *new_prefix; - size_t old_len; - size_t new_len; - struct debug_prefix_map *next; -}; - -/* Linked list of such structures. */ -static debug_prefix_map *debug_prefix_maps; - - -/* Record a debug file prefix mapping. ARG is the argument to - -fdebug-prefix-map and must be of the form OLD=NEW. */ - -void -add_debug_prefix_map (const char *arg) -{ - debug_prefix_map *map; - const char *p; - - p = strchr (arg, '='); - if (!p) - { - error ("invalid argument %qs to -fdebug-prefix-map", arg); - return; - } - map = XNEW (debug_prefix_map); - map->old_prefix = xstrndup (arg, p - arg); - map->old_len = p - arg; - p++; - map->new_prefix = xstrdup (p); - map->new_len = strlen (p); - map->next = debug_prefix_maps; - debug_prefix_maps = map; -} - -/* Perform user-specified mapping of debug filename prefixes. Return - the new name corresponding to FILENAME. */ - -const char * -remap_debug_filename (const char *filename) -{ - debug_prefix_map *map; - char *s; - const char *name; - size_t name_len; - - for (map = debug_prefix_maps; map; map = map->next) - if (filename_ncmp (filename, map->old_prefix, map->old_len) == 0) - break; - if (!map) - return filename; - name = filename + map->old_len; - name_len = strlen (name) + 1; - s = (char *) alloca (name_len + map->new_len); - memcpy (s, map->new_prefix, map->new_len); - memcpy (s + map->new_len, name, name_len); - return ggc_strdup (s); -} /* Return true if DWARF2 debug info can be emitted for DECL. */ diff --git a/gcc/opts-global.c b/gcc/opts-global.c index d2653dde715..29a919e2efd 100644 --- a/gcc/opts-global.c +++ b/gcc/opts-global.c @@ -38,6 +38,7 @@ along with GCC; see the file COPYING3. If not see #include "stringpool.h" #include "attribs.h" #include "asan.h" +#include "file-prefix-map.h" /* add_*_prefix_map() */ typedef const char *const_char_p; /* For DEF_VEC_P. */ @@ -365,6 +366,10 @@ handle_common_deferred_options (void) add_debug_prefix_map (opt->arg); break; + case OPT_ffile_prefix_map_: + add_file_prefix_map (opt->arg); + break; + case OPT_fdump_: if (!g->get_dumps ()->dump_switch_p (opt->arg)) error ("unrecognized command line option %<-fdump-%s%>", opt->arg); diff --git a/gcc/opts.c b/gcc/opts.c index e9df6f6a6ae..a67b867561d 100644 --- a/gcc/opts.c +++ b/gcc/opts.c @@ -2103,6 +2103,7 @@ common_handle_option (struct gcc_options *opts, break; case OPT_fdebug_prefix_map_: + case OPT_ffile_prefix_map_: /* Deferred. */ break; diff --git a/gcc/testsuite/c-c++-common/cpp/ffile-prefix-map.c b/gcc/testsuite/c-c++-common/cpp/ffile-prefix-map.c new file mode 100644 index 00000000000..294875b717d --- /dev/null +++ b/gcc/testsuite/c-c++-common/cpp/ffile-prefix-map.c @@ -0,0 +1,5 @@ +/* { dg-do compile } */ +/* { dg-options "-ffile-prefix-map==FILE-PREFIX" } */ + +#pragma message "FILE starts with " __FILE__ /* { dg-message "FILE starts with FILE-PREFIX" } */ +#pragma message "BASE_FILE starts with " __BASE_FILE__ /* { dg-message "BASE_FILE starts with FILE-PREFIX" } */ diff --git a/gcc/testsuite/c-c++-common/cpp/fmacro-prefix-map.c b/gcc/testsuite/c-c++-common/cpp/fmacro-prefix-map.c new file mode 100644 index 00000000000..43dc4bb287e --- /dev/null +++ b/gcc/testsuite/c-c++-common/cpp/fmacro-prefix-map.c @@ -0,0 +1,5 @@ +/* { dg-do compile } */ +/* { dg-options "-fmacro-prefix-map==MACRO-PREFIX" } */ + +#pragma message "FILE starts with " __FILE__ /* { dg-message "FILE starts with MACRO-PREFIX" } */ +#pragma message "BASE_FILE starts with " __BASE_FILE__ /* { dg-message "BASE_FILE starts with MACRO-PREFIX" } */ diff --git a/gcc/testsuite/c-c++-common/ffile-prefix-map.c b/gcc/testsuite/c-c++-common/ffile-prefix-map.c new file mode 100644 index 00000000000..88c29ca829b --- /dev/null +++ b/gcc/testsuite/c-c++-common/ffile-prefix-map.c @@ -0,0 +1,12 @@ +/* Test __builtin_FILE(). */ +/* { dg-do run } */ +/* { dg-options "-ffile-prefix-map==FILE-PREFIX" } */ + +#include <stdio.h> + +int main () +{ + printf ("__builtin_FILE starts with %s\n", __builtin_FILE ()); +} + +/* { dg-output "__builtin_FILE starts with FILE-PREFIX" } */ diff --git a/gcc/testsuite/c-c++-common/fmacro-prefix-map.c b/gcc/testsuite/c-c++-common/fmacro-prefix-map.c new file mode 100644 index 00000000000..db51587cb4f --- /dev/null +++ b/gcc/testsuite/c-c++-common/fmacro-prefix-map.c @@ -0,0 +1,12 @@ +/* Test __builtin_FILE(). */ +/* { dg-do run } */ +/* { dg-options "-fmacro-prefix-map==MACRO-PREFIX" } */ + +#include <stdio.h> + +int main () +{ + printf ("__builtin_FILE starts with %s\n", __builtin_FILE ()); +} + +/* { dg-output "__builtin_FILE starts with MACRO-PREFIX" } */ diff --git a/gcc/varasm.c b/gcc/varasm.c index ea79893a547..32e3e46897c 100644 --- a/gcc/varasm.c +++ b/gcc/varasm.c @@ -55,6 +55,7 @@ along with GCC; see the file COPYING3. If not see #include "attribs.h" #include "asan.h" #include "rtl-iter.h" +#include "file-prefix-map.h" /* remap_debug_filename() */ #ifdef XCOFF_DEBUGGING_INFO #include "xcoffout.h" /* Needed for external data declarations. */ diff --git a/gcc/vmsdbgout.c b/gcc/vmsdbgout.c index a940d32b234..ad0eac2e7d0 100644 --- a/gcc/vmsdbgout.c +++ b/gcc/vmsdbgout.c @@ -37,6 +37,7 @@ along with GCC; see the file COPYING3. If not see #include "langhooks.h" #include "function.h" #include "target.h" +#include "file-prefix-map.h" /* remap_debug_filename() */ /* Difference in seconds between the VMS Epoch and the Unix Epoch */ static const long long vms_epoch_offset = 3506716800ll; diff --git a/gcc/xcoffout.c b/gcc/xcoffout.c index 591c5900027..53156a70fcb 100644 --- a/gcc/xcoffout.c +++ b/gcc/xcoffout.c @@ -32,6 +32,7 @@ along with GCC; see the file COPYING3. If not see #include "varasm.h" #include "output.h" #include "debug.h" +#include "file-prefix-map.h" /* remap_debug_filename() */ #ifdef XCOFF_DEBUGGING_INFO diff --git a/libcpp/include/cpplib.h b/libcpp/include/cpplib.h index 7cc40c6d0d4..5e446134fe4 100644 --- a/libcpp/include/cpplib.h +++ b/libcpp/include/cpplib.h @@ -622,6 +622,10 @@ struct cpp_callbacks C++-style comments it does not include the terminating newline. */ void (*comment) (cpp_reader *, source_location, const unsigned char *, size_t); + + /* Callback for filename remapping in __FILE__ and __BASE_FILE__ macro + expansions. */ + const char *(*remap_filename) (const char*); }; #ifdef VMS diff --git a/libcpp/macro.c b/libcpp/macro.c index 0f9f0632edd..a175e5e85e7 100644 --- a/libcpp/macro.c +++ b/libcpp/macro.c @@ -450,6 +450,8 @@ _cpp_builtin_macro_text (cpp_reader *pfile, cpp_hashnode *node, if (!name) abort (); } + if (pfile->cb.remap_filename) + name = pfile->cb.remap_filename (name); len = strlen (name); buf = _cpp_unaligned_alloc (pfile, len * 2 + 3); result = buf;
