diff options
Diffstat (limited to 'libgfortran/configure.ac')
| -rw-r--r-- | libgfortran/configure.ac | 37 |
1 files changed, 22 insertions, 15 deletions
diff --git a/libgfortran/configure.ac b/libgfortran/configure.ac index 522d5ac3821..588f9997e56 100644 --- a/libgfortran/configure.ac +++ b/libgfortran/configure.ac @@ -144,30 +144,37 @@ AC_SUBST(CFLAGS) # Check for symbol versioning (copied from libssp). AC_MSG_CHECKING([whether symbol versioning is supported]) -save_LDFLAGS="$LDFLAGS" -LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map" -cat > conftest.map <<EOF +AC_ARG_ENABLE(symvers, +AS_HELP_STRING([--disable-symvers], + [disable symbol versioning for libgfortran]), +gfortran_use_symver=$enableval, +gfortran_use_symver=yes) +if test "x$gfortran_use_symver" = xyes; then + save_LDFLAGS="$LDFLAGS" + LDFLAGS="$LDFLAGS -fPIC -shared -Wl,--version-script,./conftest.map" + cat > conftest.map <<EOF FOO_1.0 { global: *foo*; bar; local: *; }; EOF -AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=gnu],[gfortran_use_symver=no]) -if test x$gfortran_use_symver = xno; then - case "$target_os" in - solaris2*) - LDFLAGS="$save_LDFLAGS" - LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map" - # Sun ld cannot handle wildcards and treats all entries as undefined. - cat > conftest.map <<EOF + AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=gnu],[gfortran_use_symver=no]) + if test x$gfortran_use_symver = xno; then + case "$target_os" in + solaris2*) + LDFLAGS="$save_LDFLAGS" + LDFLAGS="$LDFLAGS -fPIC -shared -Wl,-M,./conftest.map" + # Sun ld cannot handle wildcards and treats all entries as undefined. + cat > conftest.map <<EOF FOO_1.0 { global: foo; local: *; }; EOF - AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=sun],[gfortran_use_symver=no]) - ;; - esac + AC_LINK_IFELSE([AC_LANG_PROGRAM([[int foo;]],[[]])],[gfortran_use_symver=sun],[gfortran_use_symver=no]) + ;; + esac + fi + LDFLAGS="$save_LDFLAGS" fi -LDFLAGS="$save_LDFLAGS" AC_MSG_RESULT($gfortran_use_symver) AM_CONDITIONAL(LIBGFOR_USE_SYMVER, [test "x$gfortran_use_symver" != xno]) AM_CONDITIONAL(LIBGFOR_USE_SYMVER_GNU, [test "x$gfortran_use_symver" = xgnu]) |