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changeset 29238:cd6b616b36a8

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Visibility: Compile with visibility attributes for Linux (patch #8919). * bootstrap.conf: Add module lib-symbol-visibility. * m4/acinclude.m4: Define macro for exporting symbols in each library for Linux. * Makefile.am: Add visibility flag to compiler flags. * oct-conf-post.in.h, build-aux/mk-octave-config-h.sh: Define visibility attribute for Linux.
author John W. Eaton <jwe@octave.org>
date Wed, 16 Dec 2020 01:05:17 -0500
parents 1af06a145d40
children f6058c6e1b18
files Makefile.am bootstrap.conf build-aux/mk-octave-config-h.sh m4/acinclude.m4 oct-conf-post.in.h
diffstat 5 files changed, 11 insertions(+), 5 deletions(-) [+]
line wrap: on
line diff
--- a/Makefile.am	Tue Dec 29 18:31:46 2020 +0100
+++ b/Makefile.am	Wed Dec 16 01:05:17 2020 -0500
@@ -46,11 +46,11 @@
 
 # Fortran compiler flags.
 
-AM_FFLAGS = ${FPICFLAG} @FFLAGS@
+AM_FFLAGS = ${FPICFLAG} @FFLAGS@ ${CFLAG_VISIBILITY}
 
 # C compiler flags.
 
-AM_CFLAGS = ${CPICFLAG} ${XTRA_CFLAGS} ${WARN_CFLAGS}
+AM_CFLAGS = ${CPICFLAG} ${XTRA_CFLAGS} ${WARN_CFLAGS} ${CFLAG_VISIBILITY}
 
 # ifeq (${INCLUDE_DEPS},no)
 #   omit_deps = true;
@@ -58,7 +58,7 @@
 
 # C++ compiler flags.
 
-AM_CXXFLAGS = ${CXXPICFLAG} ${XTRA_CXXFLAGS} ${WARN_CXXFLAGS}
+AM_CXXFLAGS = ${CXXPICFLAG} ${XTRA_CXXFLAGS} ${WARN_CXXFLAGS} ${CFLAG_VISIBILITY}
 
 FFTW_XCPPFLAGS = @FFTW_XCPPFLAGS@
 FFTW_XLDFLAGS = @FFTW_XLDFLAGS@
--- a/bootstrap.conf	Tue Dec 29 18:31:46 2020 +0100
+++ b/bootstrap.conf	Wed Dec 16 01:05:17 2020 -0500
@@ -59,6 +59,7 @@
   intprops
   isatty
   largefile
+  lib-symbol-visibility
   link
   localcharset
   lstat
--- a/build-aux/mk-octave-config-h.sh	Tue Dec 29 18:31:46 2020 +0100
+++ b/build-aux/mk-octave-config-h.sh	Wed Dec 16 01:05:17 2020 -0500
@@ -187,7 +187,7 @@
 #    define OCTAVE_IMPORT __declspec(dllimport)
 #  else
      /* All other compilers, at least for now. */
-#    define OCTAVE_EXPORT
+#    define OCTAVE_EXPORT __attribute__ ((visibility ("default")))
 #    define OCTAVE_IMPORT
 #  endif
 
--- a/m4/acinclude.m4	Tue Dec 29 18:31:46 2020 +0100
+++ b/m4/acinclude.m4	Wed Dec 16 01:05:17 2020 -0500
@@ -2990,6 +2990,11 @@
     ;;
     *-*-linux* | *-*-gnu*)
       MKOCTFILE_DL_LDFLAGS="-shared -Wl,-Bsymbolic"
+      EXTERNAL_DLL_DEFS="-DEXTERNAL_DLL"
+      OCTAVE_DLL_DEFS="-DOCTAVE_DLL"
+      OCTINTERP_DLL_DEFS="-DOCTINTERP_DLL"
+      OCTGUI_DLL_DEFS="-DOCTGUI_DLL"
+      OCTGRAPHICS_DLL_DEFS="-DOCTGRAPHICS_DLL"
     ;;
     i[[3456]]86-*-sco3.2v5*)
       SH_LDFLAGS=-G
--- a/oct-conf-post.in.h	Tue Dec 29 18:31:46 2020 +0100
+++ b/oct-conf-post.in.h	Wed Dec 16 01:05:17 2020 -0500
@@ -178,7 +178,7 @@
 #  define OCTAVE_IMPORT __declspec(dllimport)
 #else
    /* All other compilers, at least for now. */
-#  define OCTAVE_EXPORT
+#  define OCTAVE_EXPORT __attribute__ ((visibility ("default")))
 #  define OCTAVE_IMPORT
 #endif