150 lines
6.2 KiB
Diff
150 lines
6.2 KiB
Diff
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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Peter Jones <pjones@redhat.com>
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Date: Tue, 26 Jun 2018 17:16:06 -0400
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Subject: [PATCH] Make it so we can tell configure which cflags utils are built
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with
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This lets us have kernel.img be built with TARGET_CFLAGS but grub-mkimage and
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friends built with HOST_CFLAGS. That in turn lets us build with an ARM compiler
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that only has hard-float ABI versions of crt*.o and libgcc*, but still use soft
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float for grub.efi.
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Signed-off-by: Peter Jones <pjones@redhat.com>
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---
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configure.ac | 49 ++++++++++++++++++++++++++++++++++++++++++++++++-
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conf/Makefile.common | 23 ++++++++++++-----------
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gentpl.py | 8 ++++----
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3 files changed, 64 insertions(+), 16 deletions(-)
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diff --git a/configure.ac b/configure.ac
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index 9ab683fef..819212095 100644
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--- a/configure.ac
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+++ b/configure.ac
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@@ -850,11 +850,23 @@ if ( test "x$target_cpu" = xi386 || test "x$target_cpu" = xx86_64 ) && test "x$p
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TARGET_CFLAGS="$TARGET_CFLAGS -mno-mmx -mno-sse -mno-sse2 -mno-sse3 -mno-3dnow"
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fi
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+# Should grub utils get the host CFLAGS, or the target CFLAGS?
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+AC_ARG_WITH([utils],
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+ AS_HELP_STRING([--with-utils=host|target|build],
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+ [choose which flags to build utilities with. (default=target)]),
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+ [have_with_utils=y],
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+ [have_with_utils=n])
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+if test x"$have_with_utils" = xy ; then
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+ with_utils="$withval"
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+else
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+ with_utils=target
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+fi
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+
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# GRUB doesn't use float or doubles at all. Yet some toolchains may decide
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# that floats are a good fit to run instead of what's written in the code.
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# Given that floating point unit is disabled (if present to begin with)
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# when GRUB is running which may result in various hard crashes.
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-if test x"$platform" != xemu ; then
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+if test x"$platform" != xemu -a x"$with_utils" == xtarget ; then
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AC_CACHE_CHECK([for options to get soft-float], grub_cv_target_cc_soft_float, [
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grub_cv_target_cc_soft_float=no
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if test "x$target_cpu" = xarm64; then
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@@ -1939,6 +1951,41 @@ HOST_CPPFLAGS="$HOST_CPPFLAGS -I\$(top_builddir)/include"
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TARGET_CPPFLAGS="$TARGET_CPPFLAGS -I\$(top_srcdir)/include"
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TARGET_CPPFLAGS="$TARGET_CPPFLAGS -I\$(top_builddir)/include"
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+case "$with_utils" in
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+ host)
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+ UTILS_CFLAGS=$HOST_CFLAGS
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+ UTILS_CPPFLAGS=$HOST_CPPFLAGS
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+ UTILS_CCASFLAGS=$HOST_CCASFLAGS
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+ UTILS_LDFLAGS=$HOST_LDFLAGS
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+ ;;
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+ target)
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+ UTILS_CFLAGS=$TARGET_CFLAGS
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+ UTILS_CPPFLAGS=$TARGET_CPPFLAGS
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+ UTILS_CCASFLAGS=$TARGET_CCASFLAGS
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+ UTILS_LDFLAGS=$TARGET_LDFLAGS
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+ ;;
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+ build)
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+ UTILS_CFLAGS=$BUILD_CFLAGS
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+ UTILS_CPPFLAGS=$BUILD_CPPFLAGS
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+ UTILS_CCASFLAGS=$BUILD_CCASFLAGS
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+ UTILS_LDFLAGS=$BUILD_LDFLAGS
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+ ;;
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+ *)
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+ AC_MSG_ERROR([--with-utils must be either host, target, or build])
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+ ;;
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+esac
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+AC_MSG_NOTICE([Using $with_utils flags for utilities.])
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+
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+unset CFLAGS
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+unset CPPFLAGS
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+unset CCASFLAGS
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+unset LDFLAGS
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+
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+AC_SUBST(UTILS_CFLAGS)
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+AC_SUBST(UTILS_CPPFLAGS)
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+AC_SUBST(UTILS_CCASFLAGS)
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+AC_SUBST(UTILS_LDFLAGS)
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+
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GRUB_TARGET_CPU="${target_cpu}"
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GRUB_PLATFORM="${platform}"
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diff --git a/conf/Makefile.common b/conf/Makefile.common
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index 1ecb921db..b93879804 100644
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--- a/conf/Makefile.common
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+++ b/conf/Makefile.common
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@@ -40,24 +40,25 @@ CPPFLAGS_KERNEL = $(CPPFLAGS_CPU) $(CPPFLAGS_PLATFORM) -DGRUB_KERNEL=1
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CCASFLAGS_KERNEL = $(CCASFLAGS_CPU) $(CCASFLAGS_PLATFORM)
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STRIPFLAGS_KERNEL = -R .eh_frame -R .rel.dyn -R .reginfo -R .note -R .comment -R .drectve -R .note.gnu.gold-version -R .MIPS.abiflags -R .ARM.exidx -R .note.gnu.property -R .gnu.build.attributes
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-CFLAGS_MODULE = $(CFLAGS_PLATFORM) -ffreestanding
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-LDFLAGS_MODULE = $(LDFLAGS_PLATFORM) -nostdlib $(TARGET_LDFLAGS_OLDMAGIC) -Wl,-r,-d
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-CPPFLAGS_MODULE = $(CPPFLAGS_CPU) $(CPPFLAGS_PLATFORM)
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-CCASFLAGS_MODULE = $(CCASFLAGS_CPU) $(CCASFLAGS_PLATFORM)
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+CFLAGS_MODULE = $(TARGET_CFLAGS) $(CFLAGS_PLATFORM) -ffreestanding
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+LDFLAGS_MODULE = $(TARGET_LDFLAGS) $(LDFLAGS_PLATFORM) -nostdlib $(TARGET_LDFLAGS_OLDMAGIC) -Wl,-r,-d
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+CPPFLAGS_MODULE = $(TARGET_CPPFLAGS) $(CPPFLAGS_DEFAULT) $(CPPFLAGS_CPU) $(CPPFLAGS_PLATFORM)
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+CCASFLAGS_MODULE = $(TARGET_CCASFLAGS) $(CCASFLAGS_DEFAULT) $(CCASFLAGS_CPU) $(CCASFLAGS_PLATFORM)
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CFLAGS_IMAGE = $(CFLAGS_PLATFORM) -fno-builtin
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LDFLAGS_IMAGE = $(LDFLAGS_PLATFORM) -nostdlib $(TARGET_LDFLAGS_OLDMAGIC) -Wl,-S
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CPPFLAGS_IMAGE = $(CPPFLAGS_CPU) $(CPPFLAGS_PLATFORM)
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CCASFLAGS_IMAGE = $(CCASFLAGS_CPU) $(CCASFLAGS_PLATFORM)
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-CFLAGS_PROGRAM =
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-LDFLAGS_PROGRAM =
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-CPPFLAGS_PROGRAM =
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-CCASFLAGS_PROGRAM =
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+CFLAGS_PROGRAM = $(UTILS_CFLAGS)
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+LDFLAGS_PROGRAM = $(UTILS_LDFLAGS)
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+CPPFLAGS_PROGRAM = $(UTILS_CPPFLAGS)
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+CCASFLAGS_PROGRAM = $(UTILS_CCASFLAGS)
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-CFLAGS_LIBRARY =
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-CPPFLAGS_LIBRARY =
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-CCASFLAGS_LIBRARY =
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+CFLAGS_LIBRARY = $(UTILS_CFLAGS)
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+LDFLAGS_LIBRARY = $(UTILS_LDFLAGS)
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+CPPFLAGS_LIBRARY = $(UTILS_CPPFLAGS)
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+CCASFLAGS_LIBRARY = $(UTILS_CCASFLAGS)
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# Other variables
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diff --git a/gentpl.py b/gentpl.py
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index 6409736e8..1e4635f44 100644
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--- a/gentpl.py
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+++ b/gentpl.py
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@@ -694,10 +694,10 @@ def module(defn, platform):
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var_set(cname(defn) + "_SOURCES", platform_sources(defn, platform) + " ## platform sources")
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var_set("nodist_" + cname(defn) + "_SOURCES", platform_nodist_sources(defn, platform) + " ## platform nodist sources")
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var_set(cname(defn) + "_LDADD", platform_ldadd(defn, platform))
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- var_set(cname(defn) + "_CFLAGS", "$(AM_CFLAGS) $(CFLAGS_MODULE) " + platform_cflags(defn, platform))
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- var_set(cname(defn) + "_LDFLAGS", "$(AM_LDFLAGS) $(LDFLAGS_MODULE) " + platform_ldflags(defn, platform))
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- var_set(cname(defn) + "_CPPFLAGS", "$(AM_CPPFLAGS) $(CPPFLAGS_MODULE) " + platform_cppflags(defn, platform))
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- var_set(cname(defn) + "_CCASFLAGS", "$(AM_CCASFLAGS) $(CCASFLAGS_MODULE) " + platform_ccasflags(defn, platform))
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+ var_set(cname(defn) + "_CFLAGS", "$(CFLAGS_MODULE) " + platform_cflags(defn, platform))
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+ var_set(cname(defn) + "_LDFLAGS", "$(LDFLAGS_MODULE) " + platform_ldflags(defn, platform))
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+ var_set(cname(defn) + "_CPPFLAGS", "$(CPPFLAGS_MODULE) " + platform_cppflags(defn, platform))
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+ var_set(cname(defn) + "_CCASFLAGS", "$(CCASFLAGS_MODULE) " + platform_ccasflags(defn, platform))
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var_set(cname(defn) + "_DEPENDENCIES", "$(TARGET_OBJ2ELF) " + platform_dependencies(defn, platform))
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gvar_add("dist_noinst_DATA", extra_dist(defn))
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