stdioext: Add support for musl libc. * m4/fbufmode.m4 (gl_FUNC_FBUFMODE): Test whether __fbufsize exists. * lib/fbufmode.c (fbufmode): Add conditional code for musl. * m4/fseterr.m4: New file. * lib/fseterr.h (fseterr): Define as an alias of __fseterr if that function exists. * modules/fseterr (Files): Add m4/fseterr.m4. (configure.ac): Invoke gl_FUNC_FSETERR. Compile fseterr.c if __fseterr does not exist. (Makefile.am): Remove fseterr.c from lib_SOURCES. * lib/freadable.h: Update comment. * lib/fwritable.h: Update comment. * lib/freading.h: Update comment. * lib/fwriting.h: Update comment. * m4/freadahead.m4: New file. * lib/freadahead.h (freadahead): Define as an alias of __freadahead if that function exists. * modules/freadahead (Files): Add m4/freadahead.m4. (configure.ac): Invoke gl_FUNC_FREADAHEAD. Compile freadahead.c if __freadahead does not exist. (Makefile.am): Remove freadahead.c from lib_SOURCES. * m4/freadptr.m4: New file. * lib/freadptr.h (freadptr): Define as an alias of __freadptr if that function exists. * modules/freadptr (Files): Add m4/freadptr.m4. (configure.ac): Invoke gl_FUNC_FREADPTR. Compile freadptr.c if __freadptr does not exist. (Makefile.am): Remove freadptr.c from lib_SOURCES. * m4/freadseek.m4: New file. * lib/freadseek.c (freadptrinc): Use __freadptrinc if that function exists. * modules/freadseek (Files): Add m4/freadseek.m4. (configure.ac): Invoke gl_FUNC_FREADSEEK. * lib/fpurge.c (fpurge): Update comment. Reported by and with help from Rich Felker <dalias@aerifal.cx>.

Description:
An <stdbool.h> that nearly conforms to C99.
(Nearly: casts to bool may not work.)

Files:
lib/stdbool.in.h
m4/stdbool.m4

Depends-on:

configure.ac:
AM_STDBOOL_H

Makefile.am:
BUILT_SOURCES += $(STDBOOL_H)

# We need the following in order to create <stdbool.h> when the system
# doesn't have one that works.
if GL_GENERATE_STDBOOL_H
stdbool.h: stdbool.in.h $(top_builddir)/config.status
	$(AM_V_GEN)rm -f $@-t $@ && \
	{ echo '/* DO NOT EDIT! GENERATED AUTOMATICALLY! */'; \
	  sed -e 's/@''HAVE__BOOL''@/$(HAVE__BOOL)/g' < $(srcdir)/stdbool.in.h; \
	} > $@-t && \
	mv $@-t $@
else
stdbool.h: $(top_builddir)/config.status
	rm -f $@
endif
MOSTLYCLEANFILES += stdbool.h stdbool.h-t

Include:
<stdbool.h>

License:
LGPLv2+

Maintainer:
Bruno Haible