Re: [musl] unknown type name '__gnuc_va_list'

["Max R. Dechantsreiter" <max@performancejones.com>]

On Tue, Mar 07, 2023 at 08:28:51PM +0000, Ralo Kossovo wrote:
> Haven't you, by any chance, changed the values of the 'includedir' or
> 'srcdir' in musl's 'Makefile' or 'config.mak'.

No changes; in Makefile:

srcdir = .
exec_prefix = /usr/local
bindir = $(exec_prefix)/bin

prefix = /usr/local/musl
includedir = $(prefix)/include
libdir = $(prefix)/lib
syslibdir = /lib

(excerpted), and the whole config.mak is as follows:

# This version of config.mak was generated by:
# ./configure --prefix=/home/maxd/GNU/lib/musl-1.2.3_gcc-12.1.0 --target=x86_64 --disable-shared
# Any changes made here will be lost if configure is re-run
AR = /home/maxd/GNU/opt/gnu/gcc-12.1.0/bin/gcc-ar
RANLIB = /home/maxd/GNU/opt/gnu/gcc-12.1.0/bin/gcc-ranlib
ARCH = x86_64
SUBARCH = 
ASMSUBARCH = 
srcdir = .
prefix = /home/maxd/GNU/lib/musl-1.2.3_gcc-12.1.0
exec_prefix = $(prefix)
bindir = $(exec_prefix)/bin
libdir = $(prefix)/lib
includedir = $(prefix)/include
syslibdir = /lib
CC = gcc
CFLAGS = 
CFLAGS_AUTO = -Os -pipe -fomit-frame-pointer -fno-unwind-tables -fno-asynchronous-unwind-tables -ffunction-sections -fdata-sections -Wno-pointer-to-int-cast -Werror=implicit-function-declaration -Werror=implicit-int -Werror=pointer-sign -Werror=pointer-arith -Werror=int-conversion -Werror=incompatible-pointer-types -Werror=discarded-qualifiers -Werror=discarded-array-qualifiers -Waddress -Warray-bounds -Wchar-subscripts -Wduplicate-decl-specifier -Winit-self -Wreturn-type -Wsequence-point -Wstrict-aliasing -Wunused-function -Wunused-label -Wunused-variable
CFLAGS_C99FSE = -std=c99 -nostdinc -ffreestanding -fexcess-precision=standard -frounding-math -Wa,--noexecstack
CFLAGS_MEMOPS = -fno-tree-loop-distribute-patterns
CFLAGS_NOSSP = -fno-stack-protector
CPPFLAGS = 
LDFLAGS = 
LDFLAGS_AUTO = -Wl,--sort-section,alignment -Wl,--sort-common -Wl,--gc-sections -Wl,--hash-style=both -Wl,--no-undefined -Wl,--exclude-libs=ALL -Wl,--dynamic-list=./dynamic.list
CROSS_COMPILE = 
LIBCC = -lgcc -lgcc_eh
OPTIMIZE_GLOBS = internal/*.c malloc/*.c string/*.c
ALL_TOOLS =  obj/musl-gcc
TOOL_LIBS =  lib/musl-gcc.specs
ADD_CFI = no
MALLOC_DIR = mallocng
SHARED_LIBS =
WRAPCC_GCC = $(CC)

> What output does running 'grep -rni /usr/include' in musl's root
> directory generate?

No output:

[/home/maxd/GNU/Build/musl-1.2.3_gcc-12.1.0] 29> grep -rni /usr/include
[/home/maxd/GNU/Build/musl-1.2.3_gcc-12.1.0] 30>


> 
> On 3/7/23, Max R. Dechantsreiter <max@performancejones.com> wrote:
> > My musl-1.2.3 fails to compile the simple test:
> >
> > cat > hello.c <<EOF
> > #include <stdio.h>
> > int main()
> > {
> >   printf("Hello, world!\n");
> >   return 0;
> > }
> > EOF
> > $INSTALL/bin/musl-gcc hello.c
> > /usr/include/stdio.h:52:9: error: unknown type name '__gnuc_va_list'
> >    52 | typedef __gnuc_va_list va_list;
> >       |         ^~~~~~~~~~~~~~
> > /usr/include/stdio.h:52:24: error: conflicting types for 'va_list'; have
> > 'int'
> >    52 | typedef __gnuc_va_list va_list;
> >       |                        ^~~~~~~
> > .
> > .
> > .
> >
> > I configured musl as follows:
> >
> > CC=gcc ./configure \
> >         --prefix=$INSTALL \
> >         --target=x86_64 \
> >         --disable-shared \
> >>& configure.log
> > # CROSS_COMPILE configured to "x86_64-":
> > sed -i 's/\(CROSS_COMPILE = \).*/\1/' config.mak
> >
> > and built (cleanly) with GCC 12.1.0 on
> >
> > Linux version 4.19.0 (mockbuild@builder1.eng.sw.ru) (gcc version 4.8.5
> > 20150623 (Red Hat 4.8.5-44) (GCC) ) #1 SMP Thu Dec 15 20:31:06 MSK 2022
> >
> > I had the same problem with GCC 10.2.1.
> >
> > Is there a known fix/workaround someone could provide?
> >