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| author | Peter Seiderer <ps.report@gmx.net> | 2015-07-02 23:26:32 +0200 |
|---|---|---|
| committer | Thomas Petazzoni <thomas.petazzoni@free-electrons.com> | 2015-07-04 12:36:26 +0200 |
| commit | f01396a158f14c53b781c35f7ff29da0bea8c8d6 (patch) | |
| tree | fd1f32960d831fae39a12ba02c5c96c87c648b5c /package/libv4l | |
| parent | 948cbd345db1b0d995810d8acee32f21972717ad (diff) | |
libv4l: fix uclibc-ng configure/compile
With raspberrypi_defconfig:
libv4l2rds.c:256:2: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
for (int i = 0; i < tuning->station_cnt; i++) {
^
libv4l2rds.c:256:2: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code
>From build/libv4l-1.6.2/config.log:
configure:4709: checking for .../host/usr/bin/arm-buildroot-linux-uclibcgnueabi-gcc option to accept ISO C99
configure:4858: .../host/usr/bin/arm-buildroot-linux-uclibcgnueabi-gcc -std=gnu99 -c -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -Os -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 conftest.c >&5
conftest.c:54:9: error: unknown type name 'wchar_t'
const wchar_t *name;
The C99 detection problem seems more related to missing wchar_t type support than the compiler option?
Adding LIBV4L_CONF_ENV = ac_cv_prog_cc_c99='-std=c99' gives a lot of compile errors like:
libv4lconvert.c: In function 'dev_ioctl':
processing/../libv4lsyscall-priv.h:85:10: error: 'SYS_ioctl' undeclared (first use in this function)
syscall(SYS_ioctl, (int)(fd), (unsigned long)(cmd), (void *)(arg))
^
libv4lconvert.c:43:9: note: in expansion of macro 'SYS_IOCTL'
return SYS_IOCTL(fd, cmd, arg);
^
processing/../libv4lsyscall-priv.h:85:10: note: each undeclared identifier is reported only once for each function it appears in
syscall(SYS_ioctl, (int)(fd), (unsigned long)(cmd), (void *)(arg))
^
libv4lconvert.c:43:9: note: in expansion of macro 'SYS_IOCTL'
return SYS_IOCTL(fd, cmd, arg);
^
Adding LIBV4L_CONF_ENV = ac_cv_prog_cc_c99='-std=gnu99' solves all configure/compile errors.
Signed-off-by: Peter Seiderer <ps.report@gmx.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Diffstat (limited to 'package/libv4l')
| -rw-r--r-- | package/libv4l/libv4l.mk | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/package/libv4l/libv4l.mk b/package/libv4l/libv4l.mk index b1c783db9..edb2a36d6 100644 --- a/package/libv4l/libv4l.mk +++ b/package/libv4l/libv4l.mk @@ -11,6 +11,9 @@ LIBV4L_INSTALL_STAGING = YES LIBV4L_DEPENDENCIES = host-pkgconf LIBV4L_CONF_OPTS = --disable-doxygen-doc +# fix uclibc-ng configure/compile +LIBV4L_CONF_ENV = ac_cv_prog_cc_c99='-std=gnu99' + # v4l-utils components have different licences, see v4l-utils.spec for details LIBV4L_LICENSE = GPLv2+ (utilities), LGPLv2.1+ (libraries) LIBV4L_LICENSE_FILES = COPYING COPYING.libv4l lib/libv4l1/libv4l1-kernelcode-license.txt |