[FFmpeg-cvslog] configure: Check for getenv
Martin Storsjö
git at videolan.org
Sun May 5 13:10:27 CEST 2013
ffmpeg | branch: master | Martin Storsjö <martin at martin.st> | Fri Nov 30 11:16:58 2012 +0200| [2cca96e670e78bb19eb0232469d5a27245e18c02] | committer: Martin Storsjö
configure: Check for getenv
When targeting the "windows store application" (metro) API subset
(or the windows phone API subset), the getenv function isn't
available. If it is unavailable, just define getenv to NULL.
The check uses check_func_headers, since the function actually
might exist in the libraries, but is hidden in the headers.
The fallback is in config.h since msvc can't do -D defines with
parameters on the command line, and it's used both within the
libraries and the frontend applications (so a libavutil internal
header wouldn't be enough).
Signed-off-by: Martin Storsjö <martin at martin.st>
> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=2cca96e670e78bb19eb0232469d5a27245e18c02
---
configure | 3 +++
1 file changed, 3 insertions(+)
diff --git a/configure b/configure
index 5deb69e..d165e68 100755
--- a/configure
+++ b/configure
@@ -3499,6 +3499,7 @@ check_func nanosleep || { check_func nanosleep -lrt && add_extralibs -lrt; }
check_func fcntl
check_func fork
+check_func_headers stdlib.h getenv
check_func gethrtime
check_func getopt
check_func getrusage
@@ -4086,6 +4087,8 @@ if enabled yasm; then
printf '' >$TMPASM
fi
+enabled getenv || echo "#define getenv(x) NULL" >> $TMPH
+
if enabled msvc && ! enabled shared; then
echo '#pragma comment(linker, "/include:"EXTERN_PREFIX"avpriv_strtod")' >> $TMPH
echo '#pragma comment(linker, "/include:"EXTERN_PREFIX"avpriv_snprintf")' >> $TMPH
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