Document the unwind-dw2-fde stuff a bit better, remove pointless

and inadvertant munging of libgcc_s's soname.

diff --git a/make/gcc-3.3.mk b/make/gcc-3.3.mk
index fd7b8e09838f3cf672ac97563e5e0c1aef2e52c7..1751f5536db2b32bf4db4aca45046caaf9d5e264 100644 (file)
--- a/make/gcc-3.3.mk
+++ b/make/gcc-3.3.mk
@@ -84,6 +84,14 @@ $(GCC_DIR)/.gcc3_3_build_hacks: $(GCC_DIR)/.patched
                $(SED) "s,-dynamic-linker.*\.so[\.0-9]*},\
                    -dynamic-linker /lib/ld-uClibc.so.0},;" $$LIST; fi);
        #
+       # Prevent gcc from using the unwind-dw2-fde-glibc code used for
+       # unwinding stack frames for C++ exception handling.  The
+       # unwind-dw2-fde-glibc code depends on glibc's ldso, we ant to use
+       # the generic version instead.
+       #
+       $(SED) "s,^#ifndef inhibit_libc,#define inhibit_libc\n\
+               #ifndef inhibit_libc,g;" $(GCC_DIR)/gcc/unwind-dw2-fde-glibc.c;
+       #
        # Prevent system glibc start files from leaking in uninvited...
        #
        $(SED) "s,standard_startfile_prefix_1 = \".*,standard_startfile_prefix_1 =\
@@ -106,11 +114,6 @@ $(GCC_DIR)/.gcc3_3_build_hacks: $(GCC_DIR)/.patched
        #
        $(SED) "s,\"/lib,\"$(STAGING_DIR)/lib,g;" $(GCC_DIR)/gcc/collect2.c
        $(SED) "s,\"/usr/,\"$(STAGING_DIR)/usr/,g;" $(GCC_DIR)/gcc/collect2.c
-       #
-       # Prevent gcc from using the unwind-dw2-fde-glibc code
-       #
-       $(SED) "s,^#ifndef inhibit_libc,#define inhibit_libc\n\
-               #ifndef inhibit_libc,g;" $(GCC_DIR)/gcc/unwind-dw2-fde-glibc.c;
        touch $(GCC_DIR)/.gcc3_3_build_hacks
 
 # The --without-headers option stopped working with gcc 3.0 and has never been
@@ -197,18 +200,7 @@ gcc3_3_initial-dirclean:
 #
 #############################################################
 GCC_BUILD_DIR2:=$(TOOL_BUILD_DIR)/gcc-3.3-final
-$(GCC_DIR)/.g++_build_hacks: $(GCC_DIR)/.patched
-       #
-       # Hack up the soname for libstdc++
-       # 
-       $(SED) "s,\.so\.1,.so.0.9.9,g;" $(GCC_DIR)/gcc/config/t-slibgcc-elf-ver;
-       $(SED) "s,-version-info.*[0-9]:[0-9]:[0-9],-version-info 9:9:0,g;" \
-               $(GCC_DIR)/libstdc++-v3/src/Makefile.am $(GCC_DIR)/libstdc++-v3/src/Makefile.in;
-       $(SED) "s,3\.0\.0,9.9.0,g;" $(GCC_DIR)/libstdc++-v3/acinclude.m4 \
-               $(GCC_DIR)/libstdc++-v3/aclocal.m4 $(GCC_DIR)/libstdc++-v3/configure;
-       touch $(GCC_DIR)/.g++_build_hacks
-
-$(GCC_BUILD_DIR2)/.configured: $(GCC_DIR)/.g++_build_hacks
+$(GCC_BUILD_DIR2)/.configured: $(GCC_DIR)/.patched
        mkdir -p $(GCC_BUILD_DIR2)
        echo -e "#!/bin/sh\nexec $(GCC_BUILD_DIR2)/gcc/xgcc -B$(GCC_BUILD_DIR2)/gcc/ -B$(STAGING_DIR)/$(ARCH)-linux/bin/ -B$(STAGING_DIR)/$(ARCH)-linux/lib/ -isystem $(STAGING_DIR)/$(ARCH)-linux/include $(TARGET_SOFT_FLOAT) \$$@" > $(GCC_BUILD_DIR2)/target_g++
        chmod a+x $(GCC_BUILD_DIR2)/target_g++
@@ -383,20 +375,13 @@ $(GCC_BUILD_DIR3)/.gcc3_3_build_hacks: $(GCC_BUILD_DIR3)/.patched
                $(SED) "s,-dynamic-linker.*\.so[\.0-9]*},\
                    -dynamic-linker /lib/ld-uClibc.so.0},;" $$LIST; fi);
        #
-       # Prevent gcc from using the unwind-dw2-fde-glibc code
+       # Prevent gcc from using the unwind-dw2-fde-glibc code used for
+       # unwinding stack frames for C++ exception handling.  The
+       # unwind-dw2-fde-glibc code depends on glibc's ldso, we ant to use
+       # the generic version instead.
        #
        $(SED) "s,^#ifndef inhibit_libc,#define inhibit_libc\n\
                #ifndef inhibit_libc,g;" $(GCC_BUILD_DIR3)/gcc/unwind-dw2-fde-glibc.c;
-       #
-       # Hack up the soname for libstdc++
-       # 
-       $(SED) "s,\.so\.1,.so.0.9.9,g;" $(GCC_BUILD_DIR3)/gcc/config/t-slibgcc-elf-ver;
-       $(SED) "s,-version-info.*[0-9]:[0-9]:[0-9],-version-info 9:9:0,g;" \
-               $(GCC_BUILD_DIR3)/libstdc++-v3/src/Makefile.am \
-               $(GCC_BUILD_DIR3)/libstdc++-v3/src/Makefile.in;
-       $(SED) "s,3\.0\.0,9.9.0,g;" $(GCC_BUILD_DIR3)/libstdc++-v3/acinclude.m4 \
-               $(GCC_BUILD_DIR3)/libstdc++-v3/aclocal.m4 \
-               $(GCC_BUILD_DIR3)/libstdc++-v3/configure;
        touch $(GCC_BUILD_DIR3)/.gcc3_3_build_hacks
 
 $(GCC_BUILD_DIR3)/.configured: $(GCC_BUILD_DIR3)/.gcc3_3_build_hacks