From c4df5bbeb87a445dbc84b9ed677b2c721e5051b5 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Thu, 2 Jul 2020 18:10:49 +0200 Subject: [PATCH] sim/igen: Fix linker error with -fno-common GCC 10 enables -fno-common by default. This resulted in multiple definition linker errors since a global variable was declared and defined in a header file: ld: libsim.a(idecode.o):sim/v850/idecode.h:71: multiple definition of `idecode_issue'; libsim.a(irun.o):sim/v850/idecode.h:71: first defined here ld: libsim.a(engine.o):sim/v850/idecode.h:71: multiple definition of `idecode_issue'; libsim.a(irun.o):sim/v850/idecode.h:71: first defined here ld: libsim.a(support.o):sim/v850/idecode.h:71: multiple definition of `idecode_issue'; libsim.a(irun.o):sim/v850/idecode.h:71: first defined here ld: libsim.a(semantics.o):sim/v850/idecode.h:71: multiple definition of `idecode_issue'; libsim.a(irun.o):sim/v850/idecode.h:71: first defined here sim/igen PR sim/26194 * lf.h (lf_get_file_type): Declare. * lf.c (lf_get_file_type): Define. * gen-idecode.c (print_idecode_issue_function_header): Use lf_get_file_type() to issue an extern variable declaration in case of header files. --- sim/igen/ChangeLog | 9 +++++++++ sim/igen/gen-idecode.c | 2 ++ sim/igen/lf.c | 7 +++++++ sim/igen/lf.h | 2 ++ 4 files changed, 20 insertions(+) diff --git a/sim/igen/ChangeLog b/sim/igen/ChangeLog index beda37b56e..f3f50f4d3f 100644 --- a/sim/igen/ChangeLog +++ b/sim/igen/ChangeLog @@ -1,3 +1,12 @@ +2020-07-03 Sebastian Huber + + PR sim/26194 + * lf.h (lf_get_file_type): Declare. + * lf.c (lf_get_file_type): Define. + * gen-idecode.c (print_idecode_issue_function_header): Use + lf_get_file_type() to issue an extern variable declaration in + case of header files. + 2019-12-19 Tom Tromey PR build/24572: diff --git a/sim/igen/gen-idecode.c b/sim/igen/gen-idecode.c index b8f8ca1506..741498a1be 100644 --- a/sim/igen/gen-idecode.c +++ b/sim/igen/gen-idecode.c @@ -930,6 +930,8 @@ print_idecode_issue_function_header (lf *file, "INLINE_IDECODE", "\n"); break; case is_function_variable: + if (lf_get_file_type (file) == lf_is_h) + lf_printf (file, "extern "); print_semantic_function_type (file); lf_printf (file, " (*"); break; diff --git a/sim/igen/lf.c b/sim/igen/lf.c index 0f377d48d8..937e3d939f 100644 --- a/sim/igen/lf.c +++ b/sim/igen/lf.c @@ -86,6 +86,13 @@ lf_open (char *name, } +lf_file_type +lf_get_file_type (const lf *file) +{ + return file->type; +} + + void lf_close (lf *file) { diff --git a/sim/igen/lf.h b/sim/igen/lf.h index 54b4dcd0de..6d86fac8d3 100644 --- a/sim/igen/lf.h +++ b/sim/igen/lf.h @@ -54,6 +54,8 @@ extern lf *lf_open lf_file_references file_references, lf_file_type type, const char *program); +extern lf_file_type lf_get_file_type (const lf *file); + extern void lf_close (lf *file);