This patch is useful for cross compilers. Without this patch tcc tries to use the host's libraries, crt*.o and include files. The patch prepends a string to all default paths. The string can be passed to configure with --sysroot=string.
Daniel
diff -rud tcc-0.9.24-immed2/configure tcc-0.9.24-immed3/configure
--- tcc-0.9.24-immed2/configure Mon Mar 31 09:24:00 2008
+++ tcc-0.9.24-immed3/configure Fri Sep 5 18:13:24 2008
@@ -26,6 +26,7 @@
tccdir=""
includedir=""
mandir=""
+sysroot=""
cross_prefix=""
cc="gcc"
host_cc="gcc"
@@ -102,6 +103,8 @@
;;
--mandir=*) mandir=`echo $opt | cut -d '=' -f 2`
;;
+ --sysroot=*) sysroot=`echo $opt | cut -d '=' -f 2`
+ ;;
--source-path=*) source_path=`echo $opt | cut -d '=' -f 2`
;;
--cross-prefix=*) cross_prefix=`echo $opt | cut -d '=' -f 2`
@@ -218,6 +221,7 @@
echo "Advanced options (experts only):"
echo " --source-path=PATH path of source code [$source_path]"
echo " --cross-prefix=PREFIX use PREFIX for compile tools [$cross_prefix]"
+echo " --sysroot=PREFIX prepend PREFIX to library/include paths []"
echo " --cc=CC use C compiler CC [$cc]"
echo " --make=MAKE use specified make [$make]"
echo ""
@@ -267,6 +271,7 @@
echo "Include directory $includedir"
echo "Manual directory $mandir"
echo "Doc directory $docdir"
+echo "Target root prefix $sysroot"
echo "Source path $source_path"
echo "C compiler $cc"
echo "make $make"
@@ -287,6 +292,7 @@
echo "includedir=$includedir" >> config.mak
echo "mandir=$mandir" >> config.mak
echo "docdir=$docdir" >> config.mak
+echo "#define CONFIG_SYSROOT \"$sysroot\"" >> $TMPH
echo "#define CONFIG_TCCDIR \"$tccdir\"" >> $TMPH
echo "MAKE=$make" >> config.mak
echo "CC=$cc" >> config.mak
diff -rud tcc-0.9.24-immed2/tcc.c tcc-0.9.24-immed3/tcc.c
--- tcc-0.9.24-immed2/tcc.c Fri Sep 5 18:07:10 2008
+++ tcc-0.9.24-immed3/tcc.c Fri Sep 5 18:13:24 2008
@@ -113,7 +113,7 @@
/* path to find crt1.o, crti.o and crtn.o. Only needed when generating
executables or dlls */
-#define CONFIG_TCC_CRT_PREFIX "/usr/lib"
+#define CONFIG_TCC_CRT_PREFIX CONFIG_SYSROOT "/usr/lib"
#define INCLUDE_STACK_SIZE 32
#define IFDEF_STACK_SIZE 64
@@ -10143,9 +10143,9 @@
#ifndef TCC_TARGET_PE
/* default library paths */
- tcc_add_library_path(s, "/usr/local/lib");
- tcc_add_library_path(s, "/usr/lib");
- tcc_add_library_path(s, "/lib");
+ tcc_add_library_path(s, CONFIG_SYSROOT "/usr/local/lib");
+ tcc_add_library_path(s, CONFIG_SYSROOT "/usr/lib");
+ tcc_add_library_path(s, CONFIG_SYSROOT "/lib");
#endif
/* no section zero */
@@ -10426,8 +10426,8 @@
/* default include paths */
/* XXX: reverse order needed if -isystem support */
#ifndef TCC_TARGET_PE
- tcc_add_sysinclude_path(s, "/usr/local/include");
- tcc_add_sysinclude_path(s, "/usr/include");
+ tcc_add_sysinclude_path(s, CONFIG_SYSROOT "/usr/local/include");
+ tcc_add_sysinclude_path(s, CONFIG_SYSROOT "/usr/include");
#endif
snprintf(buf, sizeof(buf), "%s/include", tcc_lib_path);
tcc_add_sysinclude_path(s, buf);
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