buildroot

detect and add compiler symbol prefix to the assembly code

​

Some compiler, such as Blackfin GNU compiler, prefix a charater to any

C symbol in generated assembly code. If any assembly symbol is invoked

from C code, it needs to be prefixed as well.

​

Note: since autoreconf doesn't work with this package because automake

isn't support

​

[Ryan: add information about why patching configure is ok]

[Gustavo: update for ICU4C 54.1]

​

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>

Signed-off-by: Ryan Barnett <rjbarnet@rockwellcollins.com>

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>

​

diff -Nura icu.orig/source/configure icu/source/configure

--- icu.orig/source/configure   2014-12-18 15:49:43.038628644 -0300

+++ icu/source/configure    2014-12-18 15:56:05.793832186 -0300

@@ -637,6 +637,7 @@

 ICUDATA_CHAR

 SAMPLES_TRUE

 TESTS_TRUE

+SYMBOL_PREFIX

 ICULIBSUFFIXCNAME

 U_HAVE_LIB_SUFFIX

 ICULIBSUFFIX

@@ -7414,6 +7415,17 @@

 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $CHECK_UTF16_STRING_RESULT" >&5

 $as_echo "$CHECK_UTF16_STRING_RESULT" >&6; }

+# Check compiler generated symbol profix

+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for symbol prefix" >&5

+$as_echo "checking for symbol prefix... " >&6; }

+   SYMBOL_PREFIX=`echo "PREFIX=__USER_LABEL_PREFIX__" \

+                  | ${CPP-${CC-gcc} -E} - 2>&1 \

+                  | ${EGREP-grep} "^PREFIX=" \

+                  | sed -e "s:^PREFIX=::" -e "s:__USER_LABEL_PREFIX__::"`

+

+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: $SYMBOL_PREFIX" >&5

+$as_echo "$SYMBOL_PREFIX" >&6; }

+

 # Enable/disable extras

 # Check whether --enable-extras was given.

 if test "${enable_extras+set}" = set; then :

diff -Nura icu.orig/source/data/Makefile.in icu/source/data/Makefile.in

--- icu.orig/source/data/Makefile.in    2014-12-18 15:49:42.908624160 -0300

+++ icu/source/data/Makefile.in 2014-12-18 16:01:32.751110913 -0300

@@ -182,11 +182,11 @@

 packagedata: icupkg.inc $(PKGDATA_LIST) build-local

 ifneq ($(ENABLE_STATIC),)

 ifeq ($(PKGDATA_MODE),dll)

-   $(PKGDATA_INVOKE) $(PKGDATA) -e $(ICUDATA_ENTRY_POINT) -T $(OUTTMPDIR) -p $(ICUDATA_NAME) $(PKGDATA_LIBSTATICNAME) -m static $(PKGDATA_VERSIONING) $(PKGDATA_LIST)

+   $(PKGDATA_INVOKE) $(PKGDATA) -e @SYMBOL_PREFIX@$(ICUDATA_ENTRY_POINT) -T $(OUTTMPDIR) -p $(ICUDATA_NAME) $(PKGDATA_LIBSTATICNAME) -m static $(PKGDATA_VERSIONING) $(PKGDATA_LIST)

 endif

 endif

 ifneq ($(ICUDATA_SOURCE_IS_NATIVE_TARGET),YES)

-   $(PKGDATA_INVOKE) $(PKGDATA) -e $(ICUDATA_ENTRY_POINT) -T $(OUTTMPDIR) -p $(ICUDATA_NAME) -m $(PKGDATA_MODE) $(PKGDATA_VERSIONING) $(PKGDATA_LIBNAME) $(PKGDATA_LIST)

+   $(PKGDATA_INVOKE) $(PKGDATA) -e @SYMBOL_PREFIX@$(ICUDATA_ENTRY_POINT) -T $(OUTTMPDIR) -p $(ICUDATA_NAME) -m $(PKGDATA_MODE) $(PKGDATA_VERSIONING) $(PKGDATA_LIBNAME) $(PKGDATA_LIST)

 else

    $(INSTALL_DATA) $(ICUDATA_SOURCE_ARCHIVE) $(OUTDIR)

 endif

@@ -209,11 +209,11 @@