fix configure check for gcc
This shouldn't fail just because someone sets CC=gcc-4.5 explicitly. Besides, this way it also works with compilers that advertise GCC-compatibility like clang and ICC.
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@ -64,7 +64,7 @@ PKG_CHECK_MODULES(CAIRO_EGL, [cairo-egl],
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AS_IF([test "x$have_cairo_egl" = "xyes"],
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[AC_DEFINE([HAVE_CAIRO_EGL], [1], [Have cairo-egl])])
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if test $CC = gcc; then
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if test "x$GCC" = "xyes"; then
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GCC_CFLAGS="-Wall -g -Wstrict-prototypes -Wmissing-prototypes -fvisibility=hidden"
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fi
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AC_SUBST(GCC_CFLAGS)
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