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libphobos: Build runtime library with -ffunction-sections -fdata-sections 

Tests for `-ffunction-sections -fdata-sections' and sets SECTION_FLAGS
accordingly.  If there is no warning when using it, take advantage of
the smaller executables that can be had with `--gc-sections'.

libphobos/ChangeLog:

	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Call DRUNTIME_SECTION_FLAGS.
	* libdruntime/Makefile.am: Add SECTION_FLAGS to AM_DFLAGS.
	* libdruntime/Makefile.in: Regenerate.
	* m4/druntime.m4 (DRUNTIME_SECTION_FLAGS): New macro.
	* src/Makefile.am: Add SECTION_FLAGS to AM_DFLAGS.
	* src/Makefile.in: Regenerate.
	* testsuite/Makefile.in: Regenerate.
This commit is contained in:
Iain Buclaw 2021-04-08 18:31:04 +02:00
parent 32703b80f6
commit d118ec221d
9 changed files with 73 additions and 6 deletions
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1
libphobos/Makefile.in
View File

@ -271,6 +271,7 @@ PACKAGE_URL = @PACKAGE_URL@
PACKAGE_VERSION = @PACKAGE_VERSION@
PATH_SEPARATOR = @PATH_SEPARATOR@
RANLIB = @RANLIB@
SECTION_FLAGS = @SECTION_FLAGS@
SED = @SED@
SET_MAKE = @SET_MAKE@
SHELL = @SHELL@

47
libphobos/configure vendored
View File

@ -700,6 +700,7 @@ DRUNTIME_CPU_ARM_FALSE
DRUNTIME_CPU_ARM_TRUE
DRUNTIME_CPU_AARCH64_FALSE
DRUNTIME_CPU_AARCH64_TRUE
SECTION_FLAGS
libphobos_srcdir
libphobos_builddir
get_gcc_base_ver
@ -11749,7 +11750,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 11752 "configure"
#line 11753 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -11855,7 +11856,7 @@ else
lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
lt_status=$lt_dlunknown
cat > conftest.$ac_ext <<_LT_EOF
#line 11858 "configure"
#line 11859 "configure"
#include "confdefs.h"
#if HAVE_DLFCN_H
@ -14085,6 +14086,48 @@ fi
fi
gdc_save_DFLAGS=$GDCFLAGS
GDCFLAGS="-fno-moduleinfo -nostdinc -I $phobos_cv_abs_srcdir/libdruntime -nophoboslib $GDCFLAGS"
ac_ext=d
ac_compile='$GDC -c $GDCFLAGS conftest.$ac_ext >&5'
ac_link='$GDC -o conftest$ac_exeext $GDCFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=yes
GDCFLAGS="$GDCFLAGS -g -Werror -ffunction-sections -fdata-sections"
cat > conftest.$ac_ext <<_ACEOF
module mod;
int foo; void bar() { }
extern(C) int main() {
return 0;
}
_ACEOF
if ac_fn_d_try_compile "$LINENO"; then :
ac_fdsections=yes
else
ac_fdsections=no
fi
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
if test "x$ac_fdsections" = "xyes"; then
SECTION_FLAGS='-ffunction-sections -fdata-sections'
fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_fdsections" >&5
$as_echo "$ac_fdsections" >&6; }
ac_ext=c
ac_cpp='$CPP $CPPFLAGS'
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
ac_compiler_gnu=$ac_cv_c_compiler_gnu
GDCFLAGS=$gdc_save_DFLAGS
druntime_target_cpu_parsed=""
case "$target_cpu" in
aarch64*)

1
libphobos/configure.ac
View File

@ -137,6 +137,7 @@ GCC_BASE_VER
DRUNTIME_CONFIGURE
DRUNTIME_MULTILIB
DRUNTIME_WERROR
DRUNTIME_SECTION_FLAGS
DRUNTIME_CPU_SOURCES
DRUNTIME_OS_SOURCES
DRUNTIME_OS_THREAD_MODEL

2
libphobos/libdruntime/Makefile.am
View File

@ -24,7 +24,7 @@ D_EXTRA_DFLAGS=-nostdinc -I $(srcdir) -I .
# D flags for compilation
AM_DFLAGS= \
$(phobos_lt_pic_flag) $(phobos_compiler_shared_flag) \
$(WARN_DFLAGS) $(CHECKING_DFLAGS) $(CET_DFLAGS)
$(WARN_DFLAGS) $(CHECKING_DFLAGS) $(SECTION_FLAGS) $(CET_DFLAGS)
# Flags for other kinds of sources
AM_CFLAGS=$(CET_FLAGS)

3
libphobos/libdruntime/Makefile.in
View File

@ -635,6 +635,7 @@ PACKAGE_URL = @PACKAGE_URL@
PACKAGE_VERSION = @PACKAGE_VERSION@
PATH_SEPARATOR = @PATH_SEPARATOR@
RANLIB = @RANLIB@
SECTION_FLAGS = @SECTION_FLAGS@
SED = @SED@
SET_MAKE = @SET_MAKE@
SHELL = @SHELL@
@ -727,7 +728,7 @@ D_EXTRA_DFLAGS = -nostdinc -I $(srcdir) -I .
# D flags for compilation
AM_DFLAGS = \
$(phobos_lt_pic_flag) $(phobos_compiler_shared_flag) \
$(WARN_DFLAGS) $(CHECKING_DFLAGS) $(CET_DFLAGS)
$(WARN_DFLAGS) $(CHECKING_DFLAGS) $(SECTION_FLAGS) $(CET_DFLAGS)
# Flags for other kinds of sources

19
libphobos/m4/druntime.m4
View File

@ -116,3 +116,22 @@ AC_DEFUN([DRUNTIME_INSTALL_DIRECTORIES],
gdc_include_dir='$(libdir)/gcc/${target_alias}/${gcc_version}/include/d'
AC_SUBST(gdc_include_dir)
])
# DRUNTIME_SECTION_FLAGS
# ----------------------
# Check for -ffunction-sections nad -fdata-sections.
AC_DEFUN([DRUNTIME_SECTION_FLAGS],
[
WITH_LOCAL_DRUNTIME([
AC_LANG_PUSH([D])
GDCFLAGS="$GDCFLAGS -g -Werror -ffunction-sections -fdata-sections"
AC_TRY_COMPILE([int foo; void bar() { }],[return 0;],
[ac_fdsections=yes], [ac_fdsections=no])
if test "x$ac_fdsections" = "xyes"; then
SECTION_FLAGS='-ffunction-sections -fdata-sections'
fi
AC_MSG_RESULT($ac_fdsections)
AC_LANG_POP([D])
], [-nophoboslib])
AC_SUBST(SECTION_FLAGS)
])

2
libphobos/src/Makefile.am
View File

@ -25,7 +25,7 @@ D_EXTRA_DFLAGS=-nostdinc -I $(srcdir) \
# D flags for compilation
AM_DFLAGS= \
$(phobos_lt_pic_flag) $(phobos_compiler_shared_flag) \
$(WARN_DFLAGS) $(CHECKING_DFLAGS) $(CET_DFLAGS)
$(WARN_DFLAGS) $(CHECKING_DFLAGS) $(SECTION_FLAGS) $(CET_DFLAGS)
# Flags for other kinds of sources
AM_CFLAGS=$(CET_FLAGS)

3
libphobos/src/Makefile.in
View File

@ -388,6 +388,7 @@ PACKAGE_URL = @PACKAGE_URL@
PACKAGE_VERSION = @PACKAGE_VERSION@
PATH_SEPARATOR = @PATH_SEPARATOR@
RANLIB = @RANLIB@
SECTION_FLAGS = @SECTION_FLAGS@
SED = @SED@
SET_MAKE = @SET_MAKE@
SHELL = @SHELL@
@ -482,7 +483,7 @@ D_EXTRA_DFLAGS = -nostdinc -I $(srcdir) \
# D flags for compilation
AM_DFLAGS = \
$(phobos_lt_pic_flag) $(phobos_compiler_shared_flag) \
$(WARN_DFLAGS) $(CHECKING_DFLAGS) $(CET_DFLAGS)
$(WARN_DFLAGS) $(CHECKING_DFLAGS) $(SECTION_FLAGS) $(CET_DFLAGS)
# Flags for other kinds of sources

1
libphobos/testsuite/Makefile.in
View File

@ -215,6 +215,7 @@ PACKAGE_URL = @PACKAGE_URL@
PACKAGE_VERSION = @PACKAGE_VERSION@
PATH_SEPARATOR = @PATH_SEPARATOR@
RANLIB = @RANLIB@
SECTION_FLAGS = @SECTION_FLAGS@
SED = @SED@
SET_MAKE = @SET_MAKE@
SHELL = @SHELL@