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Add an option for libpng static linking

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We need this option to make snapshot/nightly builds compatible with
older distros and runtimes (which might not provide libpng 1.6 by
default).  Examples are: Ubuntu 16.04 LTS (and derived distros, such as
LTS Mint) or e.g. Steam Runtime.
This commit is contained in:
Patryk Obara 2020-04-16 14:17:03 +02:00
parent 66377f1726
commit 3d694ca006
1 changed files with 20 additions and 7 deletions
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27
configure.ac
View file

@ -430,15 +430,28 @@ else
AC_MSG_RESULT(no)
fi
AH_TEMPLATE(C_SSHOT,[Define to 1 to enable screenshots, requires libpng])
AC_ARG_ENABLE(screenshots,AC_HELP_STRING([--disable-screenshots],[Disable screenshots and movie recording]),,enable_screenshots=yes)
AC_CHECK_HEADER(png.h,have_png_h=yes,)
AC_CHECK_LIB(png, png_get_io_ptr, have_png_lib=yes, ,-lz)
AH_TEMPLATE(C_SSHOT, [Define to 1 to enable screenshots, requires libpng])
AC_ARG_ENABLE(screenshots,
AC_HELP_STRING([--disable-screenshots],
[Disable screenshots and movie recording]),
enable_screenshots=no,
enable_screenshots=yes)
AC_ARG_ENABLE(png_static,
AC_HELP_STRING([--enable-png-static],
[Link libpng statically (not recommended)]),
enable_png_static=yes,
enable_png_static=no)
AC_CHECK_HEADER(png.h, have_png_h=yes, )
AC_CHECK_LIB(png, png_get_io_ptr, have_png_lib=yes, , -lz)
AC_MSG_CHECKING([whether screenshots will be enabled])
if test x$enable_screenshots = xyes; then
if test x$have_png_lib = xyes -a x$have_png_h = xyes ; then
LIBS="$LIBS -lpng -lz"
AC_DEFINE(C_SSHOT,1)
if test x$have_png_lib = xyes -a x$have_png_h = xyes ; then
if test x$enable_png_static = xyes ; then
LIBS="$LIBS -Wl,-Bstatic -lpng -Wl,-Bdynamic -lz"
else
LIBS="$LIBS -lpng -lz"
fi
AC_DEFINE(C_SSHOT, 1)
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no, can't find libpng.])