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Port jpeg configuration to Solaris 10 with Sun C

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* configure.ac: Check for jpeglib 6b by trying to link it, instead
of relying on cpp magic that has problems in practice.  Check for
both jpeglib.h and jerror.h features.  Remove special case for
mingw32, which should no longer be needed (and if it were needed,
should now be addressable by hotwiring emacs_cv_jpeglib).
Fixes: bug#20332
This commit is contained in:
Paul Eggert 2015-04-15 18:30:01 -07:00
parent c0c57f8b36
commit 5761a2ecb1
1 changed files with 34 additions and 42 deletions
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76
configure.ac
View file

@ -3189,48 +3189,40 @@ AC_SUBST(LIBXPM)
### mingw32 doesn't use -ljpeg, since it loads the library dynamically.
HAVE_JPEG=no
LIBJPEG=
if test "${opsys}" = "mingw32"; then
if test "${with_jpeg}" != "no"; then
dnl Checking for jpeglib.h can lose because of a redefinition of
dnl HAVE_STDLIB_H.
AC_CHECK_HEADER(jerror.h, HAVE_JPEG=yes, HAVE_JPEG=no)
fi
AH_TEMPLATE(HAVE_JPEG, [Define to 1 if you have the jpeg library (-ljpeg).])dnl
if test "${HAVE_JPEG}" = "yes"; then
AC_DEFINE(HAVE_JPEG)
AC_EGREP_CPP([version 6b or later],
[#include <jpeglib.h>
#if JPEG_LIB_VERSION >= 62
version 6b or later
#endif
],
[AC_DEFINE(HAVE_JPEG)],
[AC_MSG_WARN([libjpeg found, but not version 6b or later])
HAVE_JPEG=no])
fi
elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
if test "${with_jpeg}" != "no"; then
dnl Checking for jpeglib.h can lose because of a redefinition of
dnl HAVE_STDLIB_H.
AC_CHECK_HEADER(jerror.h,
[AC_CHECK_LIB(jpeg, jpeg_destroy_compress, HAVE_JPEG=yes)])
fi
AH_TEMPLATE(HAVE_JPEG, [Define to 1 if you have the jpeg library (-ljpeg).])dnl
if test "${HAVE_JPEG}" = "yes"; then
AC_DEFINE(HAVE_JPEG)
AC_EGREP_CPP([version 6b or later],
[#include <jpeglib.h>
#if JPEG_LIB_VERSION >= 62
version 6b or later
#endif
],
[AC_DEFINE(HAVE_JPEG)],
[AC_MSG_WARN([libjpeg found, but not version 6b or later])
HAVE_JPEG=no])
fi
if test "${HAVE_JPEG}" = "yes"; then
LIBJPEG=-ljpeg
if test "${with_jpeg}" != "no"; then
AC_CACHE_CHECK([for jpeglib 6b or later],
[emacs_cv_jpeglib],
[OLD_LIBS=$LIBS
for emacs_cv_jpeglib in yes -ljpeg no; do
case $emacs_cv_jpeglib in
yes) ;;
no) break;;
*) LIBS="$LIBS $emacs_cv_jpeglib";;
esac
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
#include <stdio.h> /* jpeglib.h needs FILE and size_t. */
#include <jpeglib.h>
#include <jerror.h>
char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
struct jpeg_decompress_struct cinfo;
]],
[[
jpeg_create_decompress (&cinfo);
WARNMS (&cinfo, JWRN_JPEG_EOF);
jpeg_destroy_decompress (&cinfo);
]])],
[emacs_link_ok=yes],
[emacs_link_ok=no])
LIBS=$OLD_LIBS
test $emacs_link_ok = yes && break
done])
if test "$emacs_cv_jpeglib" != no; then
HAVE_JPEG=yes
AC_DEFINE([HAVE_JPEG], 1,
[Define to 1 if you have the jpeg library (typically -ljpeg).])
test "$emacs_cv_jpeglib" != yes && LIBJPEG=$emacs_cv_jpeglib
fi
fi
AC_SUBST(LIBJPEG)