VLC_SAVE_FLAGS
+dnl
+dnl Enable/disable optimizations
+dnl
+AC_ARG_ENABLE(optimizations,
+ [AS_HELP_STRING([--disable-optimizations],
+ [disable compiler optimizations (default enabled)])],,
+ [enable_optimizations="yes"])
+AS_IF([test "${enable_optimizations}" != "no"], [
+ enable_optimizations="speed"
+])
+
dnl Check for various optimization flags
-AC_CACHE_CHECK([if \$CC accepts -O4],
- [ac_cv_c_o4],
- [CFLAGS="${CFLAGS_save} -O4"
- AC_TRY_COMPILE([],,ac_cv_c_o4=yes, ac_cv_c_o4=no)])
-if test "${ac_cv_c_o4}" != "no" -a "x${enable_debug}" = "xno"; then
- CFLAGS_OPTIM_SPEED="${CFLAGS_OPTIM_SPEED} -O4"
-else
- AC_CACHE_CHECK([if \$CC accepts -O3],
- [ac_cv_c_o3],
- [CFLAGS="${CFLAGS_save} -O3"
- AC_TRY_COMPILE([],,ac_cv_c_o3=yes, ac_cv_c_o3=no)])
- if test "${ac_cv_c_o3}" != "no" -a "x${enable_debug}" = "xno"; then
- CFLAGS_OPTIM_SPEED="${CFLAGS_OPTIM_SPEED} -O3"
- else
- AC_CACHE_CHECK([if \$CC accepts -O2],
- [ac_cv_c_o2],
- [CFLAGS="${CFLAGS_save} -O2"
- AC_TRY_COMPILE([],,ac_cv_c_o2=yes, ac_cv_c_o2=no)])
- if test "${ac_cv_c_o2}" != "no"; then
- CFLAGS_OPTIM_SPEED="${CFLAGS_OPTIM_SPEED} -O2"
- else
- AC_CACHE_CHECK([if \$CC accepts -O],
- [ac_cv_c_o],
- [CFLAGS="${CFLAGS_save} -O"
- AC_TRY_COMPILE([],,ac_cv_c_o=yes, ac_cv_c_o=no)])
- if test "${ac_cv_c_o}" != "no"; then
- CFLAGS_OPTIM_SPEED="${CFLAGS_OPTIM_SPEED} -O"
- fi
- fi
- fi
-fi
+AS_IF([test "${enable_optimizations}" != "no"], [
+
+ C_O=""
+ dnl -O4 and -O3 only in production builds
+ AS_IF([test "{enable_debug}" = "no"], [
+ AC_CACHE_CHECK([if $CC accepts -O4], [ac_cv_c_o4], [
+ CFLAGS="${CFLAGS_save} -O4"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
+ ac_cv_c_o4=yes
+ ], [
+ ac_cv_c_o4=no
+ ])
+ ])
+ AS_IF([test "${ac_cv_c_o4}" != "no"], [
+ C_O="-O4"
+ ], [
+ AC_CACHE_CHECK([if $CC accepts -O3], [ac_cv_c_o3], [
+ CFLAGS="${CFLAGS_save} -O3"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
+ ac_cv_c_o3=yes
+ ], [
+ ac_cv_c_o3=no
+ ])
+ ])
+ AS_IF([test "${ac_cv_c_o3}" != "no"], [
+ C_O="-O3"
+ ])
+ ])
+ ])
-dnl Check for -ffast-math
-AC_CACHE_CHECK([if \$CC accepts -ffast-math],
- [ac_cv_c_fast_math],
- [CFLAGS="${CFLAGS_save} -ffast-math"
- AC_TRY_COMPILE([],,ac_cv_c_fast_math=yes, ac_cv_c_fast_math=no)])
-if test "${ac_cv_c_fast_math}" != "no"; then
- CFLAGS_OPTIM_SPEED="${CFLAGS_OPTIM_SPEED} -ffast-math"
-fi
+ dnl -O2 and -O in both production and debug builds
+ AS_IF([test "x$C_O" = "x"], [
+ AC_CACHE_CHECK([if \$CC accepts -O2], [ac_cv_c_o2], [
+ CFLAGS="${CFLAGS_save} -O2"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
+ ac_cv_c_o2=yes
+ ], [
+ ac_cv_c_o2=no
+ ])
+ ])
+ AS_IF([test "${ac_cv_c_o2}" != "no"], [
+ C_O="-O2"
+ ], [
+ AC_CACHE_CHECK([if \$CC accepts -O], [ac_cv_c_o], [
+ CFLAGS="${CFLAGS_save} -O"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
+ ac_cv_c_o=yes
+ ], [
+ ac_cv_c_o=no
+ ])
+ ])
+ AS_IF([test "${ac_cv_c_o}" != "no"], [
+ C_O="-O"
+ ])
+ ])
+ ])
-dnl Check for -funroll-loops
-AC_CACHE_CHECK([if \$CC accepts -funroll-loops],
- [ac_cv_c_unroll_loops],
- [CFLAGS="${CFLAGS_save} -funroll-loops"
- AC_TRY_COMPILE([],,ac_cv_c_unroll_loops=yes, ac_cv_c_unroll_loops=no)])
-if test "${ac_cv_c_unroll_loops}" != "no"; then
- CFLAGS_OPTIM_SPEED="${CFLAGS_OPTIM_SPEED} -funroll-loops"
-fi
+ VLC_RESTORE_FLAGS
+ CFLAGS="${CFLAGS} ${C_O}"
+ CXXFLAGS="${CXXFLAGS} ${C_O}"
+ OBJCFLAGS="${OBJCFLAGS} ${C_O}"
+ VLC_SAVE_FLAGS
+
+ dnl Check for -ffast-math
+ AC_CACHE_CHECK([if $CC accepts -ffast-math], [ac_cv_c_fast_math], [
+ CFLAGS="${CFLAGS_save} -ffast-math"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
+ ac_cv_c_fast_math=yes
+ ], [
+ ac_cv_c_fast_math=no
+ ])
+ ])
+ AS_IF([test "${ac_cv_c_fast_math}" != "no"], [
+ VLC_RESTORE_FLAGS
+ CFLAGS="${CFLAGS} -ffast-math"
+ CXXFLAGS="${CXXFLAGS} -ffast-math"
+ OBJCFLAGS="${OBJCFLAGS} -ffast-math"
+ VLC_SAVE_FLAGS
+ ])
-dnl Check for -fomit-frame-pointer
-AC_CACHE_CHECK([if \$CC accepts -fomit-frame-pointer],
- [ac_cv_c_omit_frame_pointer],
- [CFLAGS="${CFLAGS_save} -fomit-frame-pointer"
- AC_TRY_COMPILE([],,ac_cv_c_omit_frame_pointer=yes, ac_cv_c_omit_frame_pointer=no)])
-if test "${ac_cv_c_omit_frame_pointer}" != "no"; then
- if test "${SYS}" != "darwin"; then
- CFLAGS_OPTIM_NODEBUG="${CFLAGS_OPTIM_NODEBUG} -fomit-frame-pointer"
- else
- dnl On darwin we explicitely disable it.
- CFLAGS_OPTIM_NODEBUG="${CFLAGS_OPTIM_NODEBUG} -fno-omit-frame-pointer"
- fi
-fi
+ dnl Check for -funroll-loops
+ AC_CACHE_CHECK([if $CC accepts -funroll-loops], [ac_cv_c_unroll_loops], [
+ CFLAGS="${CFLAGS_save} -funroll-loops"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
+ ac_cv_c_unroll_loops=yes
+ ], [
+ ac_cv_c_unroll_loops=no
+ ])
+ ])
+ AS_IF([test "${ac_cv_c_unroll_loops}" != "no"], [
+ VLC_RESTORE_FLAGS
+ CFLAGS="${CFLAGS} -funroll-loops"
+ CXXFLAGS="${CXXFLAGS} -funroll-loops"
+ OBJCFLAGS="${OBJCFLAGS} -funroll-loops"
+ VLC_SAVE_FLAGS
+ ])
+
+ AS_IF([test "$enable_debug" = "no"], [
+ dnl Check for -fomit-frame-pointer
+ AC_CACHE_CHECK([if $CC accepts -fomit-frame-pointer],
+ [ac_cv_c_omit_frame_pointer], [
+ CFLAGS="${CFLAGS_save} -fomit-frame-pointer"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
+ ac_cv_c_omit_frame_pointer=yes
+ ], [
+ ac_cv_c_omit_frame_pointer=no
+ ])
+ ])
+ AS_IF([test "${ac_cv_c_omit_frame_pointer}" != "no"], [
+ VLC_RESTORE_FLAGS
+ AS_IF([test "${SYS}" != "darwin"], [
+ CFLAGS="${CFLAGS} -fomit-frame-pointer"
+ CXXFLAGS="${CXXFLAGS} -fomit-frame-pointer"
+ ], [
+ dnl On darwin we explicitely disable it.
+ CFLAGS="${CFLAGS} -fno-omit-frame-pointer"
+ CXXFLAGS="${CXXFLAGS} -fno-omit-frame-pointer"
+ OBJCFLAGS="${OBJCFLAGS} -fno-omit-frame-pointer"
+ ])
+ VLC_SAVE_FLAGS
+ ])
+ ])
+])
dnl Check for Darwin plugin linking flags
-AC_CACHE_CHECK([if \$CC accepts -bundle -undefined error],
- [ac_cv_ld_darwin],
- [CFLAGS="${CFLAGS_save} -bundle -undefined error"
- AC_TRY_COMPILE([],,ac_cv_ld_darwin=yes, ac_cv_ld_darwin=no)])
-if test "${ac_cv_ld_darwin}" != "no"; then
+AS_IF([test "${SYS}" = "darwin"], [
+ AC_CACHE_CHECK([if $CC accepts -bundle -undefined error],
+ [ac_cv_ld_darwin], [
+ CFLAGS="${CFLAGS_save} -bundle -undefined error"
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM()], [
+ ac_cv_ld_darwin=yes
+ ], [
+ ac_cv_ld_darwin=no
+ ])
+ ])
+ AS_IF([test "${ac_cv_ld_darwin}" != "no"], [
VLC_ADD_LDFLAGS([plugin],[-bundle -undefined error])
-fi
+ ])
+])
dnl Checks for __attribute__(aligned()) directive
AC_CACHE_CHECK([__attribute__ ((aligned ())) support],
AC_DEFINE(OPTIMIZE_MEMORY, 1, Define if you want to optimize memory usage over performance)
fi
-dnl
-dnl Enable/disable optimizations
-dnl
-AC_ARG_ENABLE(optimizations,
- [AS_HELP_STRING([--disable-optimizations],
- [disable compiler optimizations (default enabled)])])
-if test "${enable_optimizations}" != "no"; then
- enable_optimizations="speed"
-fi
-
dnl
dnl Allow running as root (useful for people running on embedded platforms)
dnl