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Improved C99 compiler detection in configure.ac. It will

pass -std=gnu99 instead of -std=c99 to GCC now, but -pedantic
should still give warnings about GNU extensions like before
except with some special keywords like asm().
This commit is contained in:
Lasse Collin 2008-05-11 14:17:21 +03:00
parent 11de5d5267
commit b09464bf9a

View file

@ -350,12 +350,14 @@ AM_CONDITIONAL(COND_SMALL, test "x$enable_small" = xyes)
echo
echo "Initializing Automake:"
# There's no C++ or Fortran in LZMA Utils:
CXX=no
F77=no
AM_INIT_AUTOMAKE([1.10 foreign tar-v7 filename-length-max=99])
AC_PROG_LN_S
AC_PROG_CC_C99
if test x$ac_cv_prog_cc_c99 = xno ; then
AC_MSG_ERROR([No C99 compiler was found.])
fi
AM_PROG_CC_C_O
AM_PROG_AS
AC_USE_SYSTEM_EXTENSIONS
@ -367,6 +369,8 @@ CC="$PTHREAD_CC"
echo
echo "Initializing Libtool:"
CXX=no
F77=no
AC_PROG_LIBTOOL
@ -405,8 +409,9 @@ AC_CHECK_HEADERS([assert.h errno.h byteswap.h sys/param.h sys/sysctl.h],
# Checks for typedefs, structures, and compiler characteristics.
###############################################################################
AC_C_INLINE
AC_C_RESTRICT
dnl We don't need these as long as we need a C99 compiler anyway.
dnl AC_C_INLINE
dnl AC_C_RESTRICT
AC_HEADER_STDBOOL
@ -426,11 +431,7 @@ AC_CHECK_SIZEOF([size_t])
AC_CHECK_MEMBERS([struct stat.st_atim.tv_nsec, struct stat.st_mtim.tv_nsec,
struct stat.st_atimespec.tv_nsec, struct stat.st_mtimespec.tv_nsec])
# It is very unlikely that you want to build liblzma without
# large file support.
AC_SYS_LARGEFILE
# At the moment, the only endian-dependent part should be the integrity checks.
AC_C_BIGENDIAN
@ -590,8 +591,7 @@ if test "x$GCC" = xyes ; then
-Wformat=2 \
-Wextra \
-Wall \
-pedantic \
-std=c99
-pedantic
do
AC_MSG_CHECKING([if $CC accepts $NEW_FLAG])
OLD_CFLAGS="$CFLAGS"