[PATCH, Darwin, config] Arrange for configure to detect "otool".

[PATCH, Darwin, config] Arrange for configure to detect "otool".

[Iain Sandoe]

Currently, we fail to detect some Darwin assembler capabilities because the
configure tests rely on a BINUTILS objdump, which isn’t generally available
on Darwin.

Darwin uses a tool called "otool" to provide information about objects, and we
should be able to extend or adapt config tests to use this.

libtool already ‘knows’ about otool, we just need to teach the GCC configury.

OK for trunk?
Iain

	* configure.ac (NCN_STRICT_CHECK_TOOLS): Check otool.
	(ACX_CHECK_INSTALLED_TARGET_TOOL): Likewise
	(GCC_TARGET_TOOL): Likewise.
	* Makefile.tpl (HOST_EXPORTS): Add OTOOL, OTOOL_FOR_TARGET.
	(BASE_TARGET_EXPORTS): OTOOL, export OTOOL_FOR_TARGET.
	OTOOL, OTOOL_FOR_TARGET: New substitutions. 
	(EXTRA_HOST_FLAGS, EXTRA_TARGET_FLAGS): Add OTOOL.
	* configure: Regenerate. 
	* Makefile.in: Likewise.

gcc/

	* configure.ac (gcc_cv_otool): Set.
	* configure: Regenerate.


diff --git a/Makefile.tpl b/Makefile.tpl
index 447d324595..834bec3820 100644
--- a/Makefile.tpl
+++ b/Makefile.tpl
@@ -208,6 +208,7 @@ HOST_EXPORTS = \
 	OBJCOPY="$(OBJCOPY)"; export OBJCOPY; \
 	OBJDUMP="$(OBJDUMP)"; export OBJDUMP; \
 	READELF="$(READELF)"; export READELF; \
+	OTOOL="$(OTOOL)"; export OTOOL; \
 	AR_FOR_TARGET="$(AR_FOR_TARGET)"; export AR_FOR_TARGET; \
 	AS_FOR_TARGET="$(AS_FOR_TARGET)"; export AS_FOR_TARGET; \
 	GCC_FOR_TARGET="$(GCC_FOR_TARGET)"; export GCC_FOR_TARGET; \
@@ -217,6 +218,7 @@ HOST_EXPORTS = \
 	OBJCOPY_FOR_TARGET="$(OBJCOPY_FOR_TARGET)"; export OBJCOPY_FOR_TARGET; \
 	RANLIB_FOR_TARGET="$(RANLIB_FOR_TARGET)"; export RANLIB_FOR_TARGET; \
 	READELF_FOR_TARGET="$(READELF_FOR_TARGET)"; export READELF_FOR_TARGET; \
+	OTOOL_FOR_TARGET="$(OTOOL_FOR_TARGET)"; export OTOOL_FOR_TARGET; \
 	TOPLEVEL_CONFIGURE_ARGUMENTS="$(TOPLEVEL_CONFIGURE_ARGUMENTS)"; export TOPLEVEL_CONFIGURE_ARGUMENTS; \
 	HOST_LIBS="$(STAGE1_LIBS)"; export HOST_LIBS; \
 	GMPLIBS="$(HOST_GMPLIBS)"; export GMPLIBS; \
@@ -290,6 +292,7 @@ BASE_TARGET_EXPORTS = \
 	OBJCOPY="$(OBJCOPY_FOR_TARGET)"; export OBJCOPY; \
 	RANLIB="$(RANLIB_FOR_TARGET)"; export RANLIB; \
 	READELF="$(READELF_FOR_TARGET)"; export READELF; \
+	OTOOL="$(OTOOL_FOR_TARGET)"; export OTOOL; \
 	STRIP="$(STRIP_FOR_TARGET)"; export STRIP; \
 	WINDRES="$(WINDRES_FOR_TARGET)"; export WINDRES; \
 	WINDMC="$(WINDMC_FOR_TARGET)"; export WINDMC; \
@@ -398,6 +401,7 @@ NM = @NM@
 OBJDUMP = @OBJDUMP@
 RANLIB = @RANLIB@
 READELF = @READELF@
+OTOOL = @OTOOL@
 STRIP = @STRIP@
 WINDRES = @WINDRES@
 WINDMC = @WINDMC@
@@ -506,6 +510,7 @@ OBJDUMP_FOR_TARGET=@OBJDUMP_FOR_TARGET@
 OBJCOPY_FOR_TARGET=@OBJCOPY_FOR_TARGET@
 RANLIB_FOR_TARGET=@RANLIB_FOR_TARGET@
 READELF_FOR_TARGET=@READELF_FOR_TARGET@
+OTOOL_FOR_TARGET=@OTOOL_FOR_TARGET@
 STRIP_FOR_TARGET=@STRIP_FOR_TARGET@
 WINDRES_FOR_TARGET=@WINDRES_FOR_TARGET@
 WINDMC_FOR_TARGET=@WINDMC_FOR_TARGET@
@@ -628,6 +633,7 @@ EXTRA_HOST_FLAGS = \
 	'OBJDUMP=$(OBJDUMP)' \
 	'RANLIB=$(RANLIB)' \
 	'READELF=$(READELF)' \
+	'OTOOL=$(OTOOL)' \
 	'STRIP=$(STRIP)' \
 	'WINDRES=$(WINDRES)' \
 	'WINDMC=$(WINDMC)' \
@@ -687,6 +693,7 @@ EXTRA_TARGET_FLAGS = \
 	'OBJCOPY=$$(OBJCOPY_FOR_TARGET)' \
 	'RANLIB=$$(RANLIB_FOR_TARGET)' \
 	'READELF=$$(READELF_FOR_TARGET)' \
+	'OTOOL=$$(OTOOL_FOR_TARGET)' \
 	'WINDRES=$$(WINDRES_FOR_TARGET)' \
 	'WINDMC=$$(WINDMC_FOR_TARGET)' \
 	'XGCC_FLAGS_FOR_TARGET=$(XGCC_FLAGS_FOR_TARGET)' \

diff --git a/configure.ac b/configure.ac
index a0b0917dd5..01ca33d566 100644
--- a/configure.ac
+++ b/configure.ac
@@ -3321,6 +3321,7 @@ NCN_STRICT_CHECK_TOOLS(WINDMC, windmc)
 NCN_STRICT_CHECK_TOOLS(OBJCOPY, objcopy)
 NCN_STRICT_CHECK_TOOLS(OBJDUMP, objdump)
 NCN_STRICT_CHECK_TOOLS(READELF, readelf)
+NCN_STRICT_CHECK_TOOLS(OTOOL, otool)
 AC_SUBST(CC)
 AC_SUBST(CXX)
 AC_SUBST(CFLAGS)
@@ -3355,6 +3356,7 @@ ACX_CHECK_INSTALLED_TARGET_TOOL(OBJCOPY_FOR_TARGET, objcopy)
 ACX_CHECK_INSTALLED_TARGET_TOOL(OBJDUMP_FOR_TARGET, objdump)
 ACX_CHECK_INSTALLED_TARGET_TOOL(RANLIB_FOR_TARGET, ranlib)
 ACX_CHECK_INSTALLED_TARGET_TOOL(READELF_FOR_TARGET, readelf)
+ACX_CHECK_INSTALLED_TARGET_TOOL(OTOOL_FOR_TARGET, otool)
 ACX_CHECK_INSTALLED_TARGET_TOOL(STRIP_FOR_TARGET, strip)
 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDRES_FOR_TARGET, windres)
 ACX_CHECK_INSTALLED_TARGET_TOOL(WINDMC_FOR_TARGET, windmc)
@@ -3384,6 +3386,7 @@ GCC_TARGET_TOOL(objcopy, OBJCOPY_FOR_TARGET, OBJCOPY, [binutils/objcopy])
 GCC_TARGET_TOOL(objdump, OBJDUMP_FOR_TARGET, OBJDUMP, [binutils/objdump])
 GCC_TARGET_TOOL(ranlib, RANLIB_FOR_TARGET, RANLIB, [binutils/ranlib])
 GCC_TARGET_TOOL(readelf, READELF_FOR_TARGET, READELF, [binutils/readelf])
+GCC_TARGET_TOOL(otool, OTOOL_FOR_TARGET, OTOOL)
 GCC_TARGET_TOOL(strip, STRIP_FOR_TARGET, STRIP, [binutils/strip-new])
 GCC_TARGET_TOOL(windres, WINDRES_FOR_TARGET, WINDRES, [binutils/windres])
 GCC_TARGET_TOOL(windmc, WINDMC_FOR_TARGET, WINDMC, [binutils/windmc])

diff --git a/gcc/configure.ac b/gcc/configure.ac
index 65f9c92ec8..c3320ec3f4 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -2466,6 +2466,23 @@ else
 	AC_MSG_RESULT($gcc_cv_readelf)
 fi
 
+# Figure out what otool we will be using.
+AS_VAR_SET_IF(gcc_cv_otool,, [
+if test -x otool$build_exeext; then
+	gcc_cv_otool=./otool$build_exeext
+elif ( set dummy $OTOOL_FOR_TARGET; test -x $[2] ); then
+        gcc_cv_otool="$OTOOL_FOR_TARGET"
+else
+        AC_PATH_PROG(gcc_cv_otool, $OTOOL_FOR_TARGET)
+fi])
+
+AC_MSG_CHECKING(what otool to use)
+if test x$gcc_cv_otool = x; then
+	AC_MSG_RESULT(not found)
+else
+	AC_MSG_RESULT($gcc_cv_otool)
+fi
+
 # Figure out what assembler alignment features are present.
 gcc_GAS_CHECK_FEATURE([.balign and .p2align], gcc_cv_as_balign_and_p2align,
  [2,6,0],,
-- 
2.17.1

Re: [PATCH, Darwin, config] Arrange for configure to detect "otool".

[Rainer Orth]

Hi Iain,

> Currently, we fail to detect some Darwin assembler capabilities because the
> configure tests rely on a BINUTILS objdump, which isn’t generally available
> on Darwin.
>
> Darwin uses a tool called "otool" to provide information about objects, and we
> should be able to extend or adapt config tests to use this.
>
> libtool already ‘knows’ about otool, we just need to teach the GCC configury.

the various checks and variable definitions seem to be sorted
alphabetically by tool name.  Best to keep them that way.

	Rainer

-- 
-----------------------------------------------------------------------------
Rainer Orth, Center for Biotechnology, Bielefeld University

Re: [PATCH, Darwin, config] Arrange for configure to detect "otool".

[Mike Stump]

On Aug 30, 2018, at 8:45 AM, Iain Sandoe <iain@sandoe.co.uk> wrote:
> 
> Currently, we fail to detect some Darwin assembler capabilities because the
> configure tests rely on a BINUTILS objdump, which isn’t generally available
> on Darwin.
> 
> Darwin uses a tool called "otool" to provide information about objects, and we
> should be able to extend or adapt config tests to use this.
> 
> libtool already ‘knows’ about otool, we just need to teach the GCC configury.
> 
> OK for trunk?

Ok once the sorting comment is resolved.

Re: [PATCH, Darwin, config] Arrange for configure to detect "otool".

[Jeff Law]

On 8/30/18 9:45 AM, Iain Sandoe wrote:
> Currently, we fail to detect some Darwin assembler capabilities because the
> configure tests rely on a BINUTILS objdump, which isn’t generally available
> on Darwin.
> 
> Darwin uses a tool called "otool" to provide information about objects, and we
> should be able to extend or adapt config tests to use this.
> 
> libtool already ‘knows’ about otool, we just need to teach the GCC configury.
> 
> OK for trunk?
> Iain
> 
> 	* configure.ac (NCN_STRICT_CHECK_TOOLS): Check otool.
> 	(ACX_CHECK_INSTALLED_TARGET_TOOL): Likewise
> 	(GCC_TARGET_TOOL): Likewise.
> 	* Makefile.tpl (HOST_EXPORTS): Add OTOOL, OTOOL_FOR_TARGET.
> 	(BASE_TARGET_EXPORTS): OTOOL, export OTOOL_FOR_TARGET.
> 	OTOOL, OTOOL_FOR_TARGET: New substitutions. 
> 	(EXTRA_HOST_FLAGS, EXTRA_TARGET_FLAGS): Add OTOOL.
> 	* configure: Regenerate. 
> 	* Makefile.in: Likewise.
> 
> gcc/
> 
> 	* configure.ac (gcc_cv_otool): Set.
> 	* configure: Regenerate.
Ranier suggested keeping things sorted alphabetically by tool name.
With that nit fixed this is fine.
jeff