Update configs

Makefile

@@ -9,6 +9,7 @@ toolchain : buildroot
 	cp -a configs/custom_kernel_config buildroot/kernel_config
 	cp -a configs/buildroot_config buildroot/.config
 	cp -a configs/busybox_config buildroot/busybox_config
+	cp -a configs/uclibc_config buildroot/uclibc_config
 	true || cp -a configs/rootfsoverlay/* buildroot/output/target/
 	make -C buildroot
 

configs/rootfsoverlay/etc/fstab

@@ -0,0 +1,10 @@
+# <file system>	<mount pt>	<type>	<options>	<dump>	<pass>
+/dev/root	/		ext2	rw,noauto	0	1
+proc		/proc		proc	defaults	0	0
+devpts		/dev/pts	devpts	defaults,gid=5,mode=620,ptmxmode=0666	0	0
+tmpfs		/dev/shm	tmpfs	mode=0777	0	0
+tmpfs		/tmp		tmpfs	mode=1777	0	0
+tmpfs		/run		tmpfs	mode=0755,nosuid,nodev	0	0
+sysfs		/sys		sysfs	defaults	0	0
+
+

configs/uclibc_config

@@ -0,0 +1,225 @@
+#
+# Automatically generated file; DO NOT EDIT.
+# uClibc-ng 1.0.44 C Library Configuration
+#
+# TARGET_aarch64 is not set
+# TARGET_alpha is not set
+# TARGET_arc is not set
+# TARGET_arm is not set
+# TARGET_avr32 is not set
+# TARGET_bfin is not set
+# TARGET_c6x is not set
+# TARGET_cris is not set
+# TARGET_csky is not set
+# TARGET_frv is not set
+# TARGET_h8300 is not set
+# TARGET_hppa is not set
+# TARGET_i386 is not set
+# TARGET_ia64 is not set
+# TARGET_kvx is not set
+# TARGET_lm32 is not set
+# TARGET_m68k is not set
+# TARGET_metag is not set
+# TARGET_microblaze is not set
+# TARGET_mips is not set
+# TARGET_nds32 is not set
+# TARGET_nios2 is not set
+# TARGET_or1k is not set
+# TARGET_powerpc is not set
+# TARGET_riscv64 is not set
+TARGET_riscv32=y
+# TARGET_sh is not set
+# TARGET_sparc is not set
+# TARGET_sparc64 is not set
+# TARGET_tile is not set
+# TARGET_x86_64 is not set
+# TARGET_xtensa is not set
+TARGET_LDSO_NAME="ld-uClibc"
+TARGET_ARCH_BITS=32
+
+#
+# Target Architecture Features and Options
+#
+TARGET_ARCH="riscv32"
+FORCE_OPTIONS_FOR_ARCH=y
+TARGET_SUBARCH=""
+UCLIBC_FORMAT_FLAT=y
+# UCLIBC_FORMAT_FLAT_SEP_DATA is not set
+# UCLIBC_FORMAT_SHARED_FLAT is not set
+ARCH_LITTLE_ENDIAN=y
+
+#
+# Using Little Endian
+#
+ARCH_HAS_MMU=y
+# ARCH_USE_MMU is not set
+UCLIBC_HAS_FLOATS=y
+UCLIBC_HAS_FPU=y
+DO_C99_MATH=y
+DO_XSI_MATH=y
+UCLIBC_HAS_LONG_DOUBLE_MATH=y
+KERNEL_HEADERS="/home/charlesl/git/mini-rv32ima/buildroot/output/build/linux-headers-6.5.12/usr/include"
+UCLIBC_UCLINUX_BROKEN_MUNMAP=y
+HAVE_DOT_CONFIG=y
+
+#
+# General Library Settings
+#
+DOPIC=y
+ARCH_HAS_NO_SHARED=y
+ARCH_HAS_NO_LDSO=y
+UCLIBC_CTOR_DTOR=y
+HAS_NO_THREADS=y
+UCLIBC_HAS_SYSLOG=y
+UCLIBC_HAS_LFS=y
+MALLOC=y
+# MALLOC_SIMPLE is not set
+UCLIBC_DYNAMIC_ATEXIT=y
+UCLIBC_HAS_UTMPX=y
+UCLIBC_HAS_UTMP=y
+UCLIBC_SUSV2_LEGACY=y
+UCLIBC_SUSV3_LEGACY=y
+# UCLIBC_SUSV3_LEGACY_MACROS is not set
+UCLIBC_SUSV4_LEGACY=y
+# UCLIBC_STRICT_HEADERS is not set
+# UCLIBC_HAS_STUBS is not set
+UCLIBC_HAS_SHADOW=y
+UCLIBC_HAS_PROGRAM_INVOCATION_NAME=y
+UCLIBC_HAS___PROGNAME=y
+UCLIBC_HAS_PTY=y
+ASSUME_DEVPTS=y
+UNIX98PTY_ONLY=y
+UCLIBC_HAS_GETPT=y
+UCLIBC_HAS_LIBUTIL=y
+UCLIBC_HAS_TM_EXTENSIONS=y
+UCLIBC_HAS_TZ_CACHING=y
+UCLIBC_HAS_TZ_FILE=y
+UCLIBC_HAS_TZ_FILE_READ_MANY=y
+UCLIBC_TZ_FILE_PATH="/etc/TZ"
+UCLIBC_FALLBACK_TO_ETC_LOCALTIME=y
+
+#
+# Advanced Library Settings
+#
+UCLIBC_PWD_BUFFER_SIZE=256
+UCLIBC_GRP_BUFFER_SIZE=256
+
+#
+# Support various families of functions
+#
+UCLIBC_LINUX_SPECIFIC=y
+UCLIBC_HAS_GNU_ERROR=y
+UCLIBC_BSD_SPECIFIC=y
+UCLIBC_HAS_BSD_ERR=y
+UCLIBC_HAS_OBSOLETE_BSD_SIGNAL=y
+# UCLIBC_HAS_BSD_B64_NTOP_B64_PTON is not set
+# UCLIBC_HAS_OBSOLETE_SYSV_SIGNAL is not set
+# UCLIBC_NTP_LEGACY is not set
+# UCLIBC_SV4_DEPRECATED is not set
+UCLIBC_HAS_REALTIME=y
+UCLIBC_HAS_ADVANCED_REALTIME=y
+UCLIBC_HAS_EPOLL=y
+UCLIBC_HAS_XATTR=y
+UCLIBC_HAS_PROFILING=y
+UCLIBC_HAS_CRYPT_IMPL=y
+UCLIBC_HAS_SHA256_CRYPT_IMPL=y
+UCLIBC_HAS_SHA512_CRYPT_IMPL=y
+UCLIBC_HAS_CRYPT=y
+UCLIBC_HAS_NETWORK_SUPPORT=y
+UCLIBC_HAS_SOCKET=y
+UCLIBC_HAS_IPV4=y
+UCLIBC_HAS_IPV6=y
+UCLIBC_USE_NETLINK=y
+UCLIBC_SUPPORT_AI_ADDRCONFIG=y
+# UCLIBC_HAS_BSD_RES_CLOSE is not set
+UCLIBC_HAS_COMPAT_RES_STATE=y
+# UCLIBC_HAS_EXTRA_COMPAT_RES_STATE is not set
+UCLIBC_HAS_RESOLVER_SUPPORT=y
+# UCLIBC_DNSRAND_MODE_URANDOM is not set
+# UCLIBC_DNSRAND_MODE_CLOCK is not set
+UCLIBC_DNSRAND_MODE_PRNGPLUS=y
+# UCLIBC_DNSRAND_MODE_SIMPLECOUNTER is not set
+
+#
+# String and Stdio Support
+#
+UCLIBC_HAS_STRING_GENERIC_OPT=y
+UCLIBC_HAS_STRING_ARCH_OPT=y
+UCLIBC_HAS_CTYPE_TABLES=y
+UCLIBC_HAS_CTYPE_SIGNED=y
+# UCLIBC_HAS_CTYPE_UNSAFE is not set
+UCLIBC_HAS_CTYPE_CHECKED=y
+# UCLIBC_HAS_CTYPE_ENFORCED is not set
+# UCLIBC_HAS_WCHAR is not set
+# UCLIBC_HAS_LIBICONV is not set
+UCLIBC_HAS_LIBINTL=y
+# UCLIBC_HAS_LOCALE is not set
+UCLIBC_HAS_HEXADECIMAL_FLOATS=y
+UCLIBC_HAS_GLIBC_CUSTOM_PRINTF=y
+# USE_OLD_VFPRINTF is not set
+UCLIBC_PRINTF_SCANF_POSITIONAL_ARGS=9
+# UCLIBC_HAS_STDIO_BUFSIZ_NONE is not set
+# UCLIBC_HAS_STDIO_BUFSIZ_256 is not set
+# UCLIBC_HAS_STDIO_BUFSIZ_512 is not set
+# UCLIBC_HAS_STDIO_BUFSIZ_1024 is not set
+# UCLIBC_HAS_STDIO_BUFSIZ_2048 is not set
+UCLIBC_HAS_STDIO_BUFSIZ_4096=y
+# UCLIBC_HAS_STDIO_BUFSIZ_8192 is not set
+UCLIBC_HAS_STDIO_BUILTIN_BUFFER_NONE=y
+# UCLIBC_HAS_STDIO_BUILTIN_BUFFER_4 is not set
+# UCLIBC_HAS_STDIO_BUILTIN_BUFFER_8 is not set
+# UCLIBC_HAS_STDIO_SHUTDOWN_ON_ABORT is not set
+UCLIBC_HAS_STDIO_GETC_MACRO=y
+UCLIBC_HAS_STDIO_PUTC_MACRO=y
+UCLIBC_HAS_STDIO_AUTO_RW_TRANSITION=y
+# UCLIBC_HAS_FOPEN_LARGEFILE_MODE is not set
+UCLIBC_HAS_FOPEN_EXCLUSIVE_MODE=y
+# UCLIBC_HAS_FOPEN_CLOSEEXEC_MODE is not set
+UCLIBC_HAS_GLIBC_CUSTOM_STREAMS=y
+UCLIBC_HAS_PRINTF_M_SPEC=y
+UCLIBC_HAS_ERRNO_MESSAGES=y
+# UCLIBC_HAS_SYS_ERRLIST is not set
+UCLIBC_HAS_SIGNUM_MESSAGES=y
+# UCLIBC_HAS_SYS_SIGLIST is not set
+UCLIBC_HAS_GNU_GETOPT=y
+UCLIBC_HAS_GETOPT_LONG=y
+UCLIBC_HAS_GNU_GETSUBOPT=y
+# UCLIBC_HAS_ARGP is not set
+
+#
+# Big and Tall
+#
+UCLIBC_HAS_REGEX=y
+UCLIBC_HAS_FNMATCH=y
+UCLIBC_HAS_WORDEXP=y
+UCLIBC_HAS_NFTW=y
+UCLIBC_HAS_FTW=y
+# UCLIBC_HAS_FTS is not set
+UCLIBC_HAS_GLOB=y
+UCLIBC_HAS_GNU_GLOB=y
+
+#
+# Library Installation Options
+#
+RUNTIME_PREFIX="/"
+DEVEL_PREFIX="/usr"
+MULTILIB_DIR="lib"
+HARDWIRED_ABSPATH=y
+
+#
+# Security options
+#
+# UCLIBC_HAS_SSP is not set
+UCLIBC_BUILD_NOEXECSTACK=y
+
+#
+# Development/debugging options
+#
+CROSS_COMPILER_PREFIX="/home/charlesl/git/mini-rv32ima/buildroot/output/host/bin/riscv32-buildroot-linux-uclibc-"
+UCLIBC_EXTRA_CFLAGS=""
+# DODEBUG is not set
+# DOSTRIP is not set
+# DOASSERTS is not set
+# UCLIBC_MALLOC_DEBUGGING is not set
+WARNINGS="-Wall"
+# EXTRA_WARNINGS is not set

hello_linux/hello_linux.c

@@ -3,4 +3,6 @@
 int main( int argc, char ** argv )
 {
 	printf( "Hello, world %08x\n", argc );
+	float f = 7.3f;
+	printf( "f: %f\n", f );
 }